ADC1613D125HN-C1

ADC1613D series Dual 16-bit ADC; 65 Msps, 80 Msps, 105 Msps or 125 Msps; serial JESD204A interface Rev. 04 — 2 July 2012 Product data sheet 1. General description The ADC1613D is a dual-channel 16-bit Analog-to-Digital Converter (ADC) optimized for high dynamic performance and low power at sample rates up to 125 Msps. Pipelined architecture and output error correction ensure the ADC1613D is accurate enough to guarantee zero missing codes over the entire operating range. Supplied from a 3.3 V source for analog and a 1.8 V source for the output driver, it embeds two serial outputs. Each lane is differential and complies with the JESD204A standard. An integrated Serial Peripheral Interface (SPI) allows the user to easily configure the ADC. A set of IC configurations is also available via the binary level control pins taken, which are used at power-up. The device also includes a programmable full-scale SPI to allow a flexible input voltage range of 1 V to 2 V (peak-to-peak). Excellent dynamic performance is maintained from the baseband to input frequencies of 170 MHz or more, making the ADC1613D ideal for use in communications, imaging, and medical applications. 2. Features and benefits  SNR, 72.5 dBFS; SFDR, 88 dBc  Sample rate up to 125 Msps  Clock input divided by 2 for less jitter contribution  3 V, 1.8 V single supplies  Flexible input voltage range: 1 V (p-p) to 2 V (p-p)  Two configurable serial outputs  Compliant with JESD204A serial transmission standard  Pin compatible with the ADC1413D series, the ADC1213D series and the ADC1113D125  Input bandwidth, 600 MHz  Power dissipation, 995 mW at 80 Msps  SPI register programming  Duty Cycle Stabilizer (DCS)  High IF capability  Offset binary, two’s complement, gray code  Power-down mode and Sleep mode  HVQFN56 package ® ADC1613D series Integrated Device Technology Dual 16-bit ADC: serial JESD204A interface 3. Applications  Wireless and wired broadband communications  Spectral analysis  Ultrasound equipment  Portable instrumentation  Imaging systems  Software defined radio 4. Ordering information Table 1. Ordering information Type number Sampling frequency (Msps) Package Name Description ADC1613D125HN-C1 125 HVQFN56 plastic thermal enhanced very thin quad flat package; SOT684-7 no leads; 56 terminals; body 8  8  0.85 mm ADC1613D105HN-C1 105 HVQFN56 plastic thermal enhanced very thin quad flat package; SOT684-7 no leads; 56 terminals; body 8  8  0.85 mm ADC1613D080HN-C1 80 HVQFN56 plastic thermal enhanced very thin quad flat package; SOT684-7 no leads; 56 terminals; body 8  8  0.85 mm ADC1613D065HN-C1 65 HVQFN56 plastic thermal enhanced very thin quad flat package; SOT684-7 no leads; 56 terminals; body 8  8  0.85 mm ADC1613D_SER 4 Product data sheet Version © IDT 2012. All rights reserved. Rev. 04 — 2 July 2012 2 of 41 ADC1613D series Integrated Device Technology Dual 16-bit ADC: serial JESD204A interface 5. Block diagram CFG (0 to 3) SDIO SCLK ERROR CORRECTION AND DIGITAL PROCESSING CS SPI SYNCP SYNCN INAP SWING_n ADC A CORE 16-BIT PIPELINED FRAME ASSEMBLY CLOCK INPUT STAGE AND DUTY CYCLE CONTROL CLKP DLL PLL CLKM ERROR CORRECTION AND DIGITAL PROCESSING 8-bit OTR INBP T/H INPUT STAGE 8-bit ADC B CORE 16-BIT PIPELINED 8-bit ENCODER 8-bit/10-bit B 8-bit SCRAMBLER A OTR INAM ENCODER 8-bit/10-bit A D15 to D0 SCRAMBLER B T/H INPUT STAGE SERIALIZER A CMLPA OUTPUT BUFFER A CMLNA SERIALIZER B CMLPB OUTPUT BUFFER B CMLNB 10-bit 10-bit D15 to D0 SWING_n INBM CLOCK INPUT STAGE AND DUTY CYCLE CONTROL SYSTEM REFERENCE AND POWER MANAGEMENT ADC1613D SCRAMBLER RESET REFBT REFAB REFBB REFAT VCMB VCMA SENSE VREF Fig 1. 005aaa168 Block diagram ADC1613D_SER 4 Product data sheet © IDT 2012. All rights reserved. Rev. 04 — 2 July 2012 3 of 41 ADC1613D series Integrated Device Technology Dual 16-bit ADC: serial JESD204A interface 6. Pinning information 43 SYNCP 44 SYNCN 45 DGND 46 VDDD 47 SWING_0 48 SWING_1 49 DNC 50 VDDA 51 AGND 52 AGND 53 VDDA 54 SENSE 55 VREF 56 VDDA 6.1 Pinning INAP 1 42 DGND INAM 2 41 DGND VCMA 3 40 VDDD REFAT 4 39 CMLPA REFAB 5 38 CMLNA AGND 6 37 VDDD CLKP 7 CLKM 8 AGND 9 36 DGND ADC1613D 35 DGND 34 VDDD REFBB 10 33 CMLNB REFBT 11 32 CMLPB DGND 28 VDDD 27 CFG3 26 CFG2 25 CFG1 24 CFG0 23 SCRAMBLER 22 RESET 21 AGND 20 CS 19 SDIO 18 29 DGND SCLK 17 30 DGND INBP 14 VDDA 16 31 VDDD INBM 13 VDDA 15 VCMB 12 005aaa169 Transparent top view Fig 2. Pinning diagram 6.2 Pin description Table 2. Pin description Symbol Pin Type [1] Description INAP 1 I channel A analog input INAM 2 I channel A complementary analog input VCMA 3 O channel A output common voltage REFAT 4 O channel A top reference REFAB 5 O channel A bottom reference AGND 6 G analog ground CLKP 7 I clock input CLKM 8 I complementary clock input AGND 9 G analog ground REFBB 10 O channel B bottom reference REFBT 11 O channel B top reference VCMB 12 O channel B output common voltage INBM 13 I channel B complementary analog input ADC1613D_SER 4 Product data sheet © IDT 2012. All rights reserved. Rev. 04 — 2 July 2012 4 of 41 ADC1613D series Integrated Device Technology Dual 16-bit ADC: serial JESD204A interface Table 2. Pin description …continued Symbol Pin Type [1] Description INBP 14 I channel B analog input VDDA 15 P analog power supply 3 V VDDA 16 P analog power supply 3 V SCLK 17 I SPI clock SDIO 18 I/O SPI data IO CS 19 I chip select AGND 20 G analog ground RESET 21 I JEDEC digital IP reset SCRAMBLER 22 I scrambler enable and disable CFG0 23 I/O Table 30 (input) or OTRA (output)[2] CFG1 24 I/O Table 30 (input) or OTRB (output)[2] CFG2 25 I/O Table 30 (input) CFG3 26 I/O Table 30 (input) VDDD 27 P digital power supply 1.8 V DGND 28 G digital ground DGND 29 G digital ground DGND 30 G digital ground VDDD 31 P digital power supply 1.8 V CMLPB 32 O channel B output CMLNB 33 O channel B complementary output VDDD 34 P digital power supply 1.8 V DGND 35 G digital ground DGND 36 G digital ground VDDD 37 P digital power supply 1.8 V CMLNA 38 O channel A complementary output CMLPA 39 O channel A output VDDD 40 P digital power supply 1.8 V DGND 41 G digital ground DGND 42 G digital ground SYNCP 43 I synchronization from FPGA SYNCN 44 I synchronization from FPGA DGND 45 G digital ground VDDD 46 P digital power supply 1.8 V SWING_0 47 I JESD204 serial buffer programmable output swing SWING_1 48 I JESD204 serial buffer programmable output swing DNC 49 O do not connect VDDA 50 P analog power supply 3 V AGND 51 G analog ground AGND 52 G analog ground ADC1613D_SER 4 Product data sheet © IDT 2012. All rights reserved. Rev. 04 — 2 July 2012 5 of 41 ADC1613D series Integrated Device Technology Dual 16-bit ADC: serial JESD204A interface Table 2. Pin description …continued Symbol Pin Type [1] Description VDDA 53 P analog power supply 3 V SENSE 54 I reference programming pin VREF 55 I/O voltage reference input/output VDDA 56 P analog power supply 3 V [1] P: power supply; G: ground; I: input; O: output; I/O: input/output. [2] OTRA stands for “OuT of Range” A. OTRB stands for “OuT of Range” B. 7. Limiting values Table 3. Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). Symbol Parameter VDDA Conditions Min Max Unit analog supply voltage 0.4 +4.6 V VDDD digital supply voltage 0.4 +2.5 V Tstg storage temperature 55 +125 C Tamb ambient temperature 40 +85 C Tj junction temperature - 125 C 8. Thermal characteristics Table 4. Symbol Thermal characteristics Parameter Conditions Rth(j-a) thermal resistance from junction to ambient [1] Rth(j-c) thermal resistance from junction to case [1] [1] Unit 17.8 K/W 6.8 K/W Value for six layers board in still air with a minimum of 25 thermal vias. ADC1613D_SER 4 Product data sheet Typ © IDT 2012. All rights reserved. Rev. 04 — 2 July 2012 6 of 41 ADC1613D series Integrated Device Technology Dual 16-bit ADC: serial JESD204A interface 9. Static characteristics Table 5. Symbol Static characteristics[1] Parameter Conditions Min Typ Max Unit Supplies VDDA analog supply voltage 2.85 3.0 3.4 V VDDD digital supply voltage 1.65 1.8 1.95 V IDDA analog supply current fclk = 125 Msps; fi = 70 MHz - 343 - mA IDDD digital supply current fclk = 125 Msps; fi = 70 MHz - 150 - mA Ptot total power dissipation fclk = 125 Msps - 1270 - mW fclk = 105 Msps - 1150 - mW fclk = 80 Msps - 995 - mW fclk = 65 Msps - 885 - mW Power-down mode - 30 - mW Standby mode - 200 - mW P power dissipation Clock inputs: pins CLKP and CLKM, AC coupled Low-Voltage Positive Emitter-Coupled Logic (LVPECL) Vi(clk)dif differential clock input voltage peak-to-peak - 1.6 - V differential clock input voltage peak - 3.0 - V SINE Vi(clk)dif Low Voltage Complementary Metal Oxide Semiconductor (LVCMOS) VIL LOW-level input voltage - - 0.3VDDA V VIH HIGH-level input voltage 0.7VDDA - - V Logic inputs, Power-down: pins CFG0 to CFG3, SCRAMBLER, SWING_0, SWING_1, and RESET VIL LOW-level input voltage - 0 - V VIH HIGH-level input voltage - 0.66VDDD - V IIL LOW-level input current 6 - +6 A IIH HIGH-level input current 30 - +30 A SPI: pins CS, SDIO, and SCLK VIL LOW-level input voltage 0 - 0.3VDDA V VIH HIGH-level input voltage 0.7VDDA - VDDA V IIL LOW-level input current 10 - +10 A IIH HIGH-level input current 50 - +50 A CI input capacitance - 4 - pF ADC1613D_SER 4 Product data sheet © IDT 2012. All rights reserved. Rev. 04 — 2 July 2012 7 of 41 ADC1613D series Integrated Device Technology Dual 16-bit ADC: serial JESD204A interface Table 5. Symbol Static characteristics[1] …continued Parameter Conditions Min Typ Max Unit track mode 5 - +5 A Analog inputs: pins INAP, INAM, INBP, and INBM II input current RI input resistance track mode - 15 -  CI input capacitance track mode - 5 - pF VI(cm) common-mode input voltage track mode 0.9 1.5 2 V Bi input bandwidth - 600 - MHz VI(dif) differential input voltage peak-to-peak 1 - 2 V Voltage controlled regulator output: pins VCMA and VCMB VO(cm) common-mode output voltage - VDDA / 2 - V IO(cm) common-mode output current - 4 - mA output 0.5 - 1 V input 0.5 - 1 V - pin AGND; VVREF; VDDA - V - V Reference voltage input/output: pin VREF VVREF voltage on pin VREF Reference mode selection: pin SENSE VSENSE voltage on pin SENSE Data outputs: pins CMLPA, CMLNA Output levels, VDDD = 1.8 V; SWING_SEL[2:0] = 000 VOL LOW-level output voltage DC coupled; output - 1.5 AC coupled - 1.35 - V VOH HIGH-level output voltage DC coupled; output - 1.8 - V AC coupled - 1.65 - V Output levels, VDDD = 1.8 V; SWING_SEL[2:0] = 001 VOL VOH LOW-level output voltage DC coupled; output - 1.45 - V AC coupled - 1.275 - V HIGH-level output voltage DC coupled; output - 1.8 - V AC coupled - 1.625 - V Output levels, VDDD = 1.8 V; SWING_SEL[2:0] = 010 VOL VOH LOW-level output voltage DC coupled; output - 1.4 - V AC coupled - 1.2 - V HIGH-level output voltage DC coupled; output - 1.8 - V AC coupled - 1.6 - V Output levels, VDDD = 1.8 V; SWING_SEL[2:0] = 011 VOL VOH LOW-level output voltage DC coupled; output - 1.35 - V AC coupled - 1.125 - V HIGH-level output voltage DC coupled; output - 1.8 - V AC coupled - 1.575 - V ADC1613D_SER 4 Product data sheet © IDT 2012. All rights reserved. Rev. 04 — 2 July 2012 8 of 41 ADC1613D series Integrated Device Technology Dual 16-bit ADC: serial JESD204A interface Table 5. Symbol Static characteristics[1] …continued Parameter Conditions Min Typ Max Unit - 1.3 - V Output levels, VDDD = 1.8 V; SWING_SEL[2:0] = 100 VOL LOW-level output voltage DC coupled; output AC coupled - 1.05 - V VOH HIGH-level output voltage DC coupled; output - 1.8 - V AC coupled - 1.55 - V Serial configuration: pins SYNCCP, SYNCCN VIL LOW-level input voltage differential; input - 0.95 - V VIH HIGH-level input voltage differential; input - 1.47 - V INL integral non-linearity - 5 - LSB DNL differential non-linearity 0.95 0.5 +0.95 LSB Eoffset offset error - 2 - mV EG gain error -  0.5 - % MG(CTC) channel-to-channel gain matching - 1.1 - % - 54 - dB Accuracy no missing codes guaranteed full-scale Supply PSRR [1] power supply rejection ratio 200 mV (p-p) on pin VDDA; fi = DC Typical values measured at VDDA = 3 V, VDDD = 1.8 V, Tamb = 25 C. Minimum and maximum values are across the full temperature range Tamb = 40 C to +85 C at VDDA = 3 V, VDDD = 1.8 V; VI (INAP, INBP)  VI (INAM, INBM) = 1 dBFS; internal reference mode; 100  differential applied to serial outputs; unless otherwise specified. ADC1613D_SER 4 Product data sheet © IDT 2012. All rights reserved. Rev. 04 — 2 July 2012 9 of 41 xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxx x x x xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xx xx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxx x x xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxx xxx Integrated Device Technology ADC1613D_SER 4 Product data sheet 10. Dynamic characteristics 10.1 Dynamic characteristics Table 6. Dynamic characteristics[1] Symbol Parameter Conditions ADC1613D065 ADC1613D080 ADC1613D105 ADC1613D125 Unit Typ Max Min Typ Max Min Typ Max Min Typ Max 2H 3H Rev. 04 — 2 July 2012 THD fi = 3 MHz - 89 - - 89 - - 88 - - 90 - dBc fi = 30 MHz - 88 - - 88 - - 88 - - 89 - dBc fi = 70 MHz - 87 - - 87 - - 86 - - 87 - dBc fi = 170 MHz - 84 - - 84 - - 83 - - 85 - dBc SNR 10 of 41 © IDT 2012. All rights reserved. SFDR third harmonic level fi = 3 MHz - 88 - - 88 - - 87 - - 89 - dBc fi = 30 MHz - 87 - - 87 - - 87 - - 88 - dBc fi = 70 MHz - 86 - - 86 - - 85 - - 86 - dBc fi = 170 MHz - 83 - - 83 - - 82 - - 84 - dBc total harmonic distortion fi = 3 MHz - 85 - - 85 - - 84 - - 86 - dBc fi = 30 MHz - 84 - - 84 - - 84 - - 85 - dBc fi = 70 MHz - 83 - - 83 - - 82 - - 83 - dBc fi = 170 MHz - 80 - - 80 - - 79 - - 81 - dBc effective number of bits fi = 3 MHz - 11.7 - - 11.7 - - 11.7 - - 11.6 - bits fi = 30 MHz - 11.6 - - 11.6 - - 11.6 - - 11.6 - bits fi = 70 MHz - 11.5 - - 11.5 - - 11.5 - - 11.5 - bits fi = 170 MHz - 11.4 - - 11.4 - - 11.4 - - 11.4 - bits signal-to-noise ratio fi = 3 MHz - 72.3 - - 72.2 - - 72.0 - - 71.6 - dBFS fi = 30 MHz - 71.5 - - 71.4 - - 71.4 - - 71.3 - dBFS fi = 70 MHz - 70.9 - - 70.9 - - 70.8 - - 70.7 - dBFS fi = 170 MHz - 70.4 - - 70.3 - - 70.2 - - 70.1 - dBFS spurious-free dynamic range fi = 3 MHz - 88 - - 88 - - 87 - - 89 - dBc fi = 30 MHz - 87 - - 87 - - 87 - - 88 - dBc fi = 70 MHz - 86 - - 86 - - 85 - - 86 - dBc fi = 170 MHz - 83 - - 83 - - 82 - - 84 - dBc Dual 16-bit ADC: serial JESD204A interface ENOB second harmonic level ADC1613D series Min Analog signal processing Symbol IMD ct(ch) [1] Dynamic characteristics[1] …continued Parameter Conditions intermodulation distortion channel crosstalk ADC1613D065 ADC1613D080 ADC1613D105 Max Min Typ ADC1613D125 Max Min Typ Integrated Device Technology ADC1613D_SER 4 Product data sheet Table 6. xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxx x x x xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xx xx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxx x x xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxx xxx Unit Min Typ Max Min Typ Max fi = 3 MHz - 89 - - 89 - - 88 - - 89 - dBc fi = 30 MHz - 88 - - 88 - - 88 - - 88 - dBc fi = 70 MHz - 87 - - 87 - - 86 - - 86 - dBc fi = 170 MHz - 84 - - 85 - - 83 - - 84 - dBc fi = 70 MHz - 100 - - 100 - - 100 - - 100 - dBc Typical values measured at VDDA = 3 V, VDDD = 1.8 V, Tamb = 25 C. Minimum and maximum values are across the full temperature range Tamb = 40 C to +85 C at VDDA = 3 V, VDDD = 1.8 V; VI (INAP, INBP)  VI (INAM, INBM) = 1 dBFS; internal reference mode; 100  differential applied to serial outputs; unless otherwise specified. 10.2 Clock and digital output timing Table 7. Rev. 04 — 2 July 2012 Symbol Clock and digital output timing characteristics[1] Parameter Conditions ADC1613D065 ADC1613D080 ADC1613D105 ADC1613D125 Min Typ Max Min Typ Max Min Typ Max Min Typ Max Unit Clock timing input: pins CLKP and CLKM 40 - 65 60 - 80 75 - 105 100 - 125 Msps data latency time 17 - 20 17 - 20 17 - 20 17 - 20 clock cycle clk clock duty cycle DCS_EN = 1: en 30 50 70 30 50 70 30 50 70 30 50 70 % DCS_EN = 0: dis 45 50 55 45 50 55 45 50 55 45 50 55 % td(s) sampling delay time - 0.8 - - 0.8 - - 0.8 - - 0.8 - ns twake wake-up time - 76 - - 76 - - 76 - - 76 - s [1] Typical values measured at VDDA = 3 V, VDDD = 1.8 V, Tamb = 25 C. Minimum and maximum values are across the full temperature range Tamb = 40 C to +85 C at VDDA = 3 V, VDDD = 1.8 V; VI (INAP, INBP)  VI (INAM, INBM) = 1 dBFS; internal reference mode; 100  differential applied to serial outputs; unless otherwise specified. 11 of 41 © IDT 2012. All rights reserved. ADC1613D series clock frequency tlat(data) Dual 16-bit ADC: serial JESD204A interface fclk ADC1613D series Integrated Device Technology Dual 16-bit ADC: serial JESD204A interface 10.3 Serial output timing The eye diagram of the serial output is shown in Figure 3 and Figure 4. Test conditions are: • 3.125 Gbps data rate • Tamb = 25 °C • DC coupling with two different receiver common-mode voltages 005aaa088 Fig 3. Eye diagram at 1 V receiver common-mode 005aaa089 Fig 4. Eye diagram at 2 V receiver common-mode ADC1613D_SER 4 Product data sheet © IDT 2012. All rights reserved. Rev. 04 — 2 July 2012 12 of 41 ADC1613D series Integrated Device Technology Dual 16-bit ADC: serial JESD204A interface 10.4 SPI timing Table 8. SPI timing characteristics[1] Symbol Parameter tw(SCLK) Min Typ Max Unit SCLK pulse width - 40 - ns tw(SCLKH) SCLK HIGH pulse width - 16 - ns tw(SCLKL) SCLK LOW pulse width - 16 - ns tsu set-up time hold time th fclk(max) [1] Conditions data to SCLK H - 5 - ns CS to SCLK H - 5 - ns data to SCLK H - 2 - ns CS to SCLK H - 2 - ns - 25 - MHz maximum clock frequency Typical values measured at VDDA = 3 V, VDDD = 1.8 V, Tamb = 25 C. Minimum and maximum values are across the full temperature range Tamb = 40 C to +85 C at VDDA = 3 V, VDDD = 1.8 V; VI (INAP, INBP)  VI (INAM,INBM) = 1 dBFS; internal reference mode; 100  differential applied to serial outputs; unless otherwise specified. tsu tsu th CS tw(SCLKL) th tw(SCLKH) tw(SCLK) SCLK SDIO R/W W1 W0 A12 A11 D2 D1 D0 005aaa065 Fig 5. SPI timing ADC1613D_SER 4 Product data sheet © IDT 2012. All rights reserved. Rev. 04 — 2 July 2012 13 of 41 ADC1613D series Integrated Device Technology Dual 16-bit ADC: serial JESD204A interface 11. Application information 11.1 Analog inputs 11.1.1 Input stage description The analog input of the ADC1613D supports a differential or a single-ended input drive. Optimal performance is achieved using differential inputs with the common-mode input voltage (VI(cm)) on pins INP and INM set to 0.5VDDA. The full-scale analog input voltage range is configurable between 1 V (p-p) and 2 V (p-p) via a programmable internal reference (see Section 11.2 and Table 21). Figure 6 shows the equivalent circuit of the sample-and-hold input stage, including ElectroStatic Discharge (ESD) protection and circuit and package parasitics. package ESD parasitics switch INAP INBP Ron = 15 Ω 1, 14 4 pF Cs internal clock switch INAM INBM Ron = 15 Ω 2, 13 4 pF Cs internal clock 005aaa069 Fig 6. Input sampling circuit The sample phase occurs when the internal clock (derived from the clock signal on pin CLKP/CLKM) is HIGH. The voltage is then held on the sampling capacitors. When the clock signal goes LOW, the stage enters the hold phase and the voltage information is transmitted to the ADC core. 11.1.2 Anti-kickback circuitry Anti-kickback circuitry (Figure 7) is needed to counteract the effects of a charge injection generated by the sampling capacitance. The RC filter is also used to filter noise from the signal before it reaches the sampling stage. The value of the capacitor should be chosen to maximize noise attenuation without degrading the settling time excessively. ADC1613D_SER 4 Product data sheet © IDT 2012. All rights reserved. Rev. 04 — 2 July 2012 14 of 41 ADC1613D series Integrated Device Technology Dual 16-bit ADC: serial JESD204A interface INAP/ INBP R C INAM/ INBM R 001aan679 Fig 7. Anti-kickback circuit The component values are determined by the input frequency and should be selected so as not to affect the input bandwidth. Table 9. RC coupling versus input frequency - typical values Input frequency (MHz) Resistance () Capacitance (pF) 3 25 12 70 12 8 170 12 8 11.1.3 Transformer The configuration of the transformer circuit is determined by the input frequency. The configuration shown in Figure 8 would be suitable for a baseband application. 100 nF Analog input 100 nF 25 Ω ADT1-1WT INAP INBP 25 Ω 12 pF 100 nF 100 nF 25 Ω 25 Ω INAM INBM VCM 100 nF 100 nF 005aaa070 Fig 8. Single transformer configuration ADC1613D_SER 4 Product data sheet © IDT 2012. All rights reserved. Rev. 04 — 2 July 2012 15 of 41 ADC1613D series Integrated Device Technology Dual 16-bit ADC: serial JESD204A interface ADT1-1WT Analog input 100 nF ADT1-1WT 50 Ω 12 Ω INAP INBP 50 Ω 8.2 pF 50 Ω 100 nF 50 Ω 12 Ω INAM INBM VCM 100 nF 100 nF 005aaa071 Fig 9. Dual transformer configuration The configuration shown in Figure 9 is recommended for high frequency applications. In both cases, the choice of transformer is a compromise between cost and performance. 11.2 System reference and power management 11.2.1 Internal/external reference The ADC1613D has a stable and accurate built-in internal reference voltage to adjust the ADC full-scale. This reference voltage can be set internally via SPI or with pins VREF and SENSE (see Figure 11 to Figure 14), in 1 dB steps between 0 dB and 6 dB, via SPI control bits INTREF[2:0] (when bit INTREF_EN = logic 1; see Table 21). The equivalent reference circuit is shown in Figure 10. An external reference is also possible by providing a voltage on pin VREF as described in Figure 13. ADC1613D_SER 4 Product data sheet © IDT 2012. All rights reserved. Rev. 04 — 2 July 2012 16 of 41 ADC1613D series Integrated Device Technology Dual 16-bit ADC: serial JESD204A interface REFAT/ REFBT REFAB/ REFBB REFERENCE AMP VREF EXT_ref BUFFER EXT_ref BANDGAP REFERENCE ADC CORE SENSE SELECTION LOGIC 001aan670 Fig 10. Reference equivalent schematic If bit INTREF_EN is set to logic 0, the reference voltage is determined either internally or externally as detailed in Table 10. Table 10. Reference modes Mode SPI bit, “Internal reference” SENSE pin VREF pin Full-scale (V (p-p)) Internal (Figure 11) 0 GND 330 pF capacitor 2 to GND Internal (Figure 12) 0 VREF pin = SENSE pin and 330 pF capacitor to GND External (Figure 13) 0 VDDA Internal, SPI mode (Figure 14) 1 VREF pin = SENSE pin and 330 pF capacitor to GND 1 external voltage 1 to 2 from 0.5 V to 1 V 1 to 2 Figure 11 to Figure 14 illustrate how to connect the SENSE and VREF pins to select the required reference voltage source. ADC1613D_SER 4 Product data sheet © IDT 2012. All rights reserved. Rev. 04 — 2 July 2012 17 of 41 ADC1613D series Integrated Device Technology Dual 16-bit ADC: serial JESD204A interface VREF VREF 330 pF 330 pF REFERENCE EQUIVALENT SCHEMATIC REFERENCE EQUIVALENT SCHEMATIC SENSE SENSE 005aaa116 005aaa117 Fig 11. Internal reference, 2 V (p-p) full-scale Fig 12. Internal reference, 1 V (p-p) full-scale VREF VREF V 0.1 μF 330 pF REFERENCE EQUIVALENT SCHEMATIC REFERENCE EQUIVALENT SCHEMATIC SENSE SENSE VDDA 005aaa119 005aaa118 Fig 13. External reference, 1 V (p-p) to 2 V (p-p) full-scale Fig 14. Internal reference via SPI, 1 V (p-p) to 2 V (p-p) full-scale 11.2.2 Programmable full-scale The full-scale is programmable between 1 V (p-p) to 2 V (p-p) (see Table 11). Table 11. Reference SPI gain control INTREF[2:0] Level (dB) Full-scale (V (p-p)) 000 0 2 001 1 1.78 010 2 1.59 011 3 1.42 100 4 1.26 101 5 1.12 110 6 1 111 not used x ADC1613D_SER 4 Product data sheet © IDT 2012. All rights reserved. Rev. 04 — 2 July 2012 18 of 41 ADC1613D series Integrated Device Technology Dual 16-bit ADC: serial JESD204A interface 11.2.3 Common-mode output voltage (VO(cm)) An 0.1 F filter capacitor should be connected between the pins VCMA and VCMB and ground to ensure a low-noise common-mode output voltage. When AC-coupled, these pins can be used to set the common-mode reference for the analog inputs, for instance via a transformer middle point. PACKAGE ESD PARASITICS COMMON MODE REFERENCE 1.5 V VCMA VCMB 0.1 μF ADC CORE 005aaa077 Fig 15. Reference equivalent schematic 11.2.4 Biasing The common-mode input voltage, VI(cm), at the inputs to the sample-and-hold stage (pins INAM, INBM, INAP, and INBP) must be between 0.9 V and 2 V for optimal performance. 11.3 Clock input 11.3.1 Drive modes The ADC1613D can be driven differentially (LVPECL). It can also be driven by a single-ended LVCMOS signal connected to pin CLKP (pin CLKM should be connected to ground via a capacitor) or pin CLKM (pin CLKP should be connected to ground via a capacitor). LVCMOS clock input CLKP CLKP CLKM LVCMOS clock input 005aaa174 a. Rising edge LVCMOS CLKM 005aaa053 b. Falling edge LVCMOS Fig 16. LVCMOS single-ended clock input ADC1613D_SER 4 Product data sheet © IDT 2012. All rights reserved. Rev. 04 — 2 July 2012 19 of 41 ADC1613D series Integrated Device Technology Dual 16-bit ADC: serial JESD204A interface Sine clock input CLKP Sine clock input CLKP CLKM CLKM 005aaa054 005aaa173 a. Sine clock input b. Sine clock input (with transformer) CLKP LVPECL clock input CLKM 005aaa172 c. LVPECL clock input Fig 17. Differential clock input 11.3.2 Equivalent input circuit The equivalent circuit of the input clock buffer is shown in Figure 18. The common-mode voltage of the differential input stage is set via 5 k internal resistors. package ESD parasitics CLKP Vcm(clk) SE_SEL SE_SEL 5 kΩ 5 kΩ CLKM 005aaa081 Vcm(clk) = common-mode voltage of the differential input stage. Fig 18. Equivalent input circuit ADC1613D_SER 4 Product data sheet © IDT 2012. All rights reserved. Rev. 04 — 2 July 2012 20 of 41 ADC1613D series Integrated Device Technology Dual 16-bit ADC: serial JESD204A interface Single-ended or differential clock inputs can be selected via the SPI (see Table 20). If single-ended is selected, the input pin (CLKM or CLKP) is selected via control bit SE_SEL. If single-ended is implemented without setting bit SE_SEL accordingly, the unused pin should be connected to ground via a capacitor. 11.3.3 Clock input divider The ADC1613D contains an input clock divider that divides the incoming clock by a factor of 2 (when bit CLKDIV2_SEL = logic 1; see Table 20). This feature allows the user to deliver a higher clock frequency with better jitter performance, leading to a better SNR result once acquisition has been performed. 11.3.4 Duty cycle stabilizer The duty cycle stabilizer can improve the overall performances of the ADC by compensating the input clock signal duty cycle. When the duty cycle stabilizer is active (bit DCS_EN = logic 1; see Table 20), the circuit can handle signals with duty cycles of between 30 % and 70 % (typical). When the duty cycle stabilizer is disabled (DCS_EN = logic 0), the input clock signal should have a duty cycle of between 45 % and 55 %. Table 12. Duty cycle stabilizer Bit DCS_EN Description 0 duty cycle stabilizer disable 1 duty cycle stabilizer enable 11.4 Digital outputs 11.4.1 Serial output equivalent circuit The JESD204A standard specifies that if the receiver and the transmitter are DC-coupled, both must be fed from the same supply. VDDD 50 Ω CMLPA/CLMPB 100 Ω RECEIVER CMLNA/CLMNB + − 12 mA to 26 mA AGND 005aaa082 Fig 19. CML output connection to the receiver (DC-coupled) The output should be terminated when 100  (typical) is reached at the receiver side. ADC1613D_SER 4 Product data sheet © IDT 2012. All rights reserved. Rev. 04 — 2 July 2012 21 of 41 ADC1613D series Integrated Device Technology Dual 16-bit ADC: serial JESD204A interface VDDD 50 Ω CMLPA/CMLPB 10 nF CMLNA/CMLNB − + 100 Ω RECEIVER 10 nF 12 mA to 26 mA 005aaa083 Fig 20. CML output connection to the receiver (AC-coupled) 11.5 JESD204A serializer For more information about the JESD204A standard refer to the JEDEC web site. 11.5.1 Digital JESD204A formatter The block placed after the ADC cores is used to implement all functionalities of the JESD204A standard. This ensures signal integrity and guarantees the clock and the data recovery at the receiver side. The block is highly parameterized and can be configured in various ways depending on the sampling frequency and the number of lanes used. M CONVERTERS N bits from Cr0 + CS bits for control L LANES F octets TX transport layer FRAME TO OCTETS SCRAMBLER ALIGNMENT CHARACTER GENERATOR 8-bit/ 10-bit SER LANE 0 8-bit/ 10-bit SER LANE 1 TX CONTROLLER SYNC~ samples stream to lane stream mapping N bits from CrM−1 + CS bits for control N' = N+CS S samples per frame cycle F octets FRAME TO OCTETS SCRAMBLER ALIGNMENT CHARACTER GENERATOR CF: position of control bits HD: frame boundary break Padding with Tail bits (TT) Mx(N'xS) bits Lx(F) octets L octets 005aaa084 Fig 21. General overview of the JESD204A serializer ADC1613D_SER 4 Product data sheet © IDT 2012. All rights reserved. Rev. 04 — 2 July 2012 22 of 41 ADC1613D series Integrated Device Technology Dual 16-bit ADC: serial JESD204A interface ADC_MODE[1:0] PRBS DUMMY SCR_IN_MODE 11 16 10 16 N AND CS LANE_MODE[1:0] 16 8-bit/ 10-bit SCR PRBS ADC_PD ADC A 00 8 N + CS 01 ´1 frame CLK ´F character CLK ´ 10F FSM (frame assembly, character replication, ILA, test mode) FRAME ASSEMBLY 16 '0' 01 '0/1' 10 PRBS 11 bit CLK PRBS 11 PRBS 16 10 16 N AND CS '0/1' 10 '0' 01 SER LANE_POL 01 8-bit/ 10-bit SCR N + CS 8 10 00 00 LANE_MODE[1:0] 11 PRBS SER 00 ADC_PD DUMMY LANE_POL SWING_SEL[2:0] sync_request ADC B 00 00 bypass alignment disable_char_repl PLL AND DLL 10 SCR_IN_MODE 005aaa170 ADC_MODE[1:0] Fig 22. Detailed view of the JESD204A serializer with debug functionality 11.5.2 ADC core output codes versus input voltage Table 13 shows the data output codes for a given analog input voltage. Table 13. Output codes versus input voltage INP  INM (V) Offset binary Two’s complement OTR < 1 0000 0000 0000 0000 1000 0000 0000 0000 1 1 0000 0000 0000 0000 1000 0000 0000 0000 0 0.99996948 0000 0000 0000 0001 1000 0000 0000 0001 0 0.99993896 0000 0000 0000 0010 1000 0000 0000 0010 0 0.99990845 0000 0000 0000 0011 1000 0000 0000 0011 0 0.99987793 0000 0000 0000 0100 1000 0000 0000 0100 0 .... .... .... 0 0.00006104 0111 1111 1111 1110 1111 1111 1111 1110 0 0.00003052 0111 1111 1111 1111 1111 1111 1111 1111 0 0 1000 0000 0000 0000 0000 0000 0000 0000 0 +0.00003052 1000 0000 0000 0001 0000 0000 0000 0001 0 +0.00006104 1000 0000 0000 0010 0000 0000 0000 0010 0 .... .... .... 0 +0.99987793 1111 1111 1111 1011 0111 1111 1111 1011 0 ADC1613D_SER 4 Product data sheet © IDT 2012. All rights reserved. Rev. 04 — 2 July 2012 23 of 41 ADC1613D series Integrated Device Technology Dual 16-bit ADC: serial JESD204A interface Table 13. Output codes versus input voltage …continued INP  INM (V) Offset binary Two’s complement OTR +0.99990845 1111 1111 1111 1100 0111 1111 1111 1100 0 +0.99993896 1111 1111 1111 1101 0111 1111 1111 1101 0 +0.99996948 1111 1111 1111 1110 0111 1111 1111 1110 0 +1 1111 1111 1111 1111 0111 1111 1111 1111 0 > +1 1111 1111 1111 1111 0111 1111 1111 1111 1 11.6 Serial Peripheral Interface (SPI) 11.6.1 Register description The ADC1613D serial interface is a synchronous serial communications port allowing for easy interfacing with many industry microprocessors. It provides access to the registers that control the operation of the chip in both read and write modes. This interface is configured as a 3-wire type (SDIO as bidirectional pin). Pin SCLK acts as the serial clock, and pin CS acts as the serial chip select. Each read/write operation is sequenced by the CS signal and enabled by a LOW level to to drive the chip with 2 bytes to 5 bytes, depending on the content of the instruction byte (see Table 14). Table 14. SPI instruction bytes MSB LSB Bit 7 6 5 4 3 2 1 0 Description R/W[1] W1 W0 A12 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0 [1] R/W indicates whether a read (logic 1) or write (logic 0) transfer occurs after the instruction byte Table 15. Read or Write mode access description R/W[1] Description 0 Write mode operation 1 Read mode operation [1] Bits W1 and W0 indicate the number of bytes transferred after the instruction byte. Table 16. Number of bytes to be transferred W1 W0 Number of bytes transferred 0 0 1 byte 0 1 2 bytes 1 0 3 bytes 1 1 4 or more bytes Bits A12 to A0 indicate the address of the register being accessed. In the case of a multiple byte transfer, this address is the first register to be accessed. An address counter is incremented to access subsequent addresses. ADC1613D_SER 4 Product data sheet © IDT 2012. All rights reserved. Rev. 04 — 2 July 2012 24 of 41 ADC1613D series Integrated Device Technology Dual 16-bit ADC: serial JESD204A interface The steps for a data transfer: 1. A falling edge on pin CS in combination with a rising edge on pin SCLK determine the start of communications. 2. The first phase is the transfer of the 2-byte instruction. 3. The second phase is the transfer of the data which can vary in length but always a multiple of 8 bits. The MSB is always sent first (for instruction and data bytes) 4. A rising edge on pin CS indicates the end of data transmission. CS SCLK SDIO R/W W1 W0 A12 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0 D7 D6 D5 Instruction bytes D4 D3 D2 Register N (data) D1 D0 D7 D6 D5 D4 D3 D2 D1 D0 Register N + 1 (data) 005aaa086 Fig 23. Transfer diagram for two data bytes (3-wire type) 11.6.2 Channel control The two ADC channels can be configured at the same time or separately. By using the register “Channel index”, the user can choose which ADC channel receives the next SPI-instruction. By default the channel A and B receives the same instructions in write mode. In read mode only A is active. ADC1613D_SER 4 Product data sheet © IDT 2012. All rights reserved. Rev. 04 — 2 July 2012 25 of 41 xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxx x x x xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xx xx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxx x x xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxx xxx Register allocation map Address Register name (hex) Access[1] Bit definition Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 ADCB ADCA Integrated Device Technology ADC1613D_SER 4 Product data sheet Table 17. Default (bin) ADC control register 0003 Channel index R/W - - - - - - 0005 Reset and Power-down modes R/W SW_RST - - - - - 0006 Clock R/W - - - SE_SEL DIFF_SE - 0008 Vref R/W - - - - INTREF_EN 0013 Offset R/W - - 0014 Test pattern 1 R/W - - 0015 Test pattern 2 R/W TESTPAT_2[15:8] 0000 0000 0016 Test pattern 3 R/W TESTPAT_3[7:0] 0000 0000 PD[1:0] CLKDIV2_SEL 0000 0000 DCS_EN INTREF[2:0] - - 0000 0001 0000 0000 DIG_OFFSET[5:0] - 1111 1111 0000 0000 TESTPAT_1[2:0] 0000 0000 Rev. 04 — 2 July 2012 JESD204A control Ser_Status R RXSYNC_ ERROR RESERVED[2:0] 0 0 POR_TST FSM_SW_ RST 0 0 RESERVED 0111 0000 0802 Ser_Reset R/W SW_RST 0 0 0 0803 Ser_Cfg_Setup R/W 0 0 0 0 0805 Ser_Control1 R/W 0 TRISTATE_ CFG_PINS SYNC_ POL SYNC_ SINGLE_ ENDED 1 REV_ SCR REV_ ENCODER REV_ SERIAL 0100 1001 0806 Ser_Control2 R/W 0 0 0 0 0 0 SWAP_ LANE_0_1 SWAP_ ADC_A_B 0000 0011 0808 Ser_Analog_Ctrl R/W 0 0 0 0 0 0809 Ser_ScramblerA R/W 0 080A Ser_ScramblerB R/W 080B Ser_PRBS_Ctrl R/W 0820 Cfg_0_DID R* 0821 Cfg_1_BID R/W* 0 0 0 0 0822 Cfg_3_SCR_L R/W* SCR 0 0 0 0 0823 Cfg_4_F R/W* 0 0 0 0 0 0824 Cfg_5_K R/W* 0 0 0 0825 Cfg_6_M R/W* 0 0 0 0 CFG_SETUP[3:0] 0000 1000 0000 0011 LSB_INIT[6:0] 0000 0000 0 0 0 0 1111 1111 0 PRBS_TYPE[1:0] DID[7:0] 1110 1101 BID[3:0] 0 0000 1010 0 L F[2:0] 0 0 0000 0000 0000 0001 K[4:0] 0 0000 0000 0000 1000 0 M 0000 0000 ADC1613D series SWING_SEL[2:0] MSB_INIT[7:0] 0 0000 0000 Dual 16-bit ADC: serial JESD204A interface 26 of 41 © IDT 2012. All rights reserved. 0801 Register allocation map …continued Address Register name (hex) Access[1] Bit definition Bit 7 Bit 6 Bit 5 Bit 4 0 Bit 3 Bit 2 Bit 1 Bit 0 Default (bin) Rev. 04 — 2 July 2012 0826 Cfg_7_CS_N R/W* 0 CS[0] 0 0827 Cfg_8_Np R/W 0 0 0 0828 Cfg_9_S R/W* 0 0 0 0 0 0 0829 Cfg_10_HD_CF R/W* HD 0 0 0 0 0 082C Cfg_01_2_LID R/W* 0 0 0 LID[4:0] 0001 1011 082D Cfg_02_2_LID R/W* 0 0 0 LID[4:0] 0001 1100 084C Cfg01_13_FCHK R FCHK[7:0] 0000 0000 084D Cfg02_13_FCHK R FCHK[7:0] 0000 0000 0870 Lane0_0_Ctrl R/W 0 SCR_IN_ MODE LANE_MODE[1:0] 0 LANE_ POL LANE_CLK_ POS_EDGE LANE_PD 0000 0001 0871 Lane1_0_Ctrl R/W 0 SCR_IN_ MODE LANE_MODE[1:0] 0 LANE_ POL LANE_CLK_ POS_EDGE LANE_PD 0000 0000 0890 ADCA_0_Ctrl R/W 0 0 ADC_MODE[1:0] 0 0 0 ADC_PD 0000 0001 0891 ADCB_0_Ctrl R/W 0 0 ADC_MODE[1:0] 0 0 0 ADC_PD 0000 0000 [1] N[3:0] Integrated Device Technology ADC1613D_SER 4 Product data sheet Table 17. xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxx x x x xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xx xx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxx x x xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxx xxx 0100 0111 NP[4:0] 0000 1111 0 S CF[1:0] 0000 0000 0000 0000 an "*" in the Access column means that this register is subject to control access conditions in Write mode. ADC1613D series Dual 16-bit ADC: serial JESD204A interface 27 of 41 © IDT 2012. All rights reserved. ADC1613D series Integrated Device Technology Dual 16-bit ADC: serial JESD204A interface 11.6.3 Register description 11.6.3.1 ADC control registers Table 18. Register Channel index (address 0003h) Default values are highlighted. Bit Access Value Description 7 to 2 - - not used 1 R/W 0 Symbol ADCB ADCA 111111 ADC B gets the next SPI command: 0 ADC B not selected 1 ADC B selected R/W ADC A gets the next SPI command: 0 ADC A not selected 1 ADC A selected Table 19. Register Reset and Power-down mode (address 0005h) Default values are highlighted. Bit Symbol Access Value Description 7 SW_RST R/W reset digital part: 6 to 2 - - 1 to 0 PD[1:0] R/W 0 no reset 1 performs a reset of the digital part 00000 not used power-down mode: 00 normal (power-up) 01 full power-down 10 sleep 11 normal (power-up) Table 20. Register Clock (address 0006h) Default values are highlighted. Bit Access Value Description 7 to 5 - Symbol - not used 4 R/W SE_SEL 000 select SE clock input pin: 0 1 3 DIFF_SE R/W 2 - - 1 CLKDIV2_SEL R/W 0 DCS_EN select CLKM input select CLKP input differential/single-ended clock input select: 0 fully differential 1 single-ended 0 not used select clock input divider by 2: 0 disable 1 active R/W duty cycle stabilizer enable: 0 disable 1 active ADC1613D_SER 4 Product data sheet © IDT 2012. All rights reserved. Rev. 04 — 2 July 2012 28 of 41 ADC1613D series Integrated Device Technology Dual 16-bit ADC: serial JESD204A interface Table 21. Register Vref (address 0008h) Default values are highlighted. Bit Access Value Description 7 to 4 - Symbol - not used 3 R/W INTREF_EN 0000 enable internal programmable VREF mode: 0 disable 1 2 to 0 INTREF[2:0] active R/W programmable internal reference: 000 0 dB (FS=2 V) 001 1 dB (FS=1.78 V) 010 2 dB (FS=1.59 V) 011 3 dB (FS=1.42 V) 100 4 dB (FS=1.26 V) 101 5 dB (FS=1.12 V) 110 6 dB (FS=1 V) 111 not used Table 22. Digital offset adjustment (address 0013h) Default values are highlighted. Register offset Decimal DIG_OFFSET[5:0] +31 011111 +31 LSB ... ... ... 0 000000 0 ... ... ... 32 100000 32 LSB Table 23. Register Test pattern 1 (address 0014h) Default values are highlighted. Bit Symbol Access Value Description 7 to 3 - - not used 2 to 0 TESTPAT_1[2:0] R/W 00000 digital test pattern: 000 off 001 mid-scale 010  FS 011 + FS 100 toggle ‘1111..1111’/’0000..0000’ 101 custom test pattern, to be written in register 0015h and 0016h 110 ‘010101...’ 111 ‘101010...’ ADC1613D_SER 4 Product data sheet © IDT 2012. All rights reserved. Rev. 04 — 2 July 2012 29 of 41 ADC1613D series Integrated Device Technology Dual 16-bit ADC: serial JESD204A interface Table 24. Register Test pattern 2 (address 0015h) Default values are highlighted. Bit Symbol 7 to 0 TESTPAT_2[15:8] Access Value R/W Description 00000000 custom digital test pattern (bit 15 to 8) Table 25. Register Test pattern 3 (address 0016h) Default values are highlighted. Bit Symbol 7 to 0 TESTPAT_3[7:0] Access Value R/W Description 00000000 custom digital test pattern (bit 7 to 0) 11.6.4 JESD204A digital control registers Table 26. Ser_Status (address 0801h) Default values are highlighted. Bit Symbol Access Value Description 7 RXSYNC_ERROR R 0 set to 1 when a synchronization error occurs 6 to 4 RESERVED[2:0] - 111 reserved 3 to 2 - - 00 not used 1 POR_TST R 0 power-on-reset 0 RESERVED - 0 reserved Table 27. SER_Reset (address 0802h) Default values are highlighted. Bit Symbol 7 SW_RST Access Value Description R/W 0 initiates a software reset of the JESD204A unit 6 to 4 - - 000 not used 3 R/W 0 initiates a software reset of the internal state machine of JESD204A unit - 000 not used FSM_SW_RST 2 to 0 - ADC1613D_SER 4 Product data sheet © IDT 2012. All rights reserved. Rev. 04 — 2 July 2012 30 of 41 ADC1613D series Integrated Device Technology Dual 16-bit ADC: serial JESD204A interface Table 28. SER_Cfg_Setup (address 0803h) Default values are highlighted. Bit Access Value Description 7 to 4 - Symbol - 0000 not used 3 to 0 CFG_SETUP[3:0] R/W 1000 quick configuration of JESD204A. These settings overrule the configuration of pins CFG3 to CFG0 (see Table 29). Table 29. JESD204A configuration table CFG_SETUP[3:0] ADC A ADC B Lane 0 Lane 1 F[1] HD[1] K[1] M[1] L[1] Comment CS[1] CF[1] S[1] 0 0000 ON ON ON ON 2 0 9 2 2 (F  K)  17 0 0 1 1 0001 ON ON ON OFF 4 0 5 2 1 (F  K)  17 0 0 1 2 0010 ON ON OFF ON 4 0 5 2 1 (F  K)  17 0 0 1 3 0011 ON OFF ON ON 1 1 17 1 2 (F  K)  17 0 0 1 4 0100 OFF ON ON ON 1 1 17 1 2 (F  K)  17 0 0 1 5 0101 ON OFF ON OFF 2 0 9 1 1 (F  K)  17 0 0 1 6 0110 ON OFF OFF ON 2 0 9 1 1 (F  K)  17 0 0 1 7 0111 OFF ON ON OFF 2 0 9 1 1 (F  K)  17 0 0 1 8 1000 OFF ON OFF ON 2 0 9 1 1 (F  K)  17 0 0 1 9 1001 10 1010 reserved 11 1011 reserved 12 1100 reserved 13 1101 reserved 14 1110 ON ON ON ON 2 0 9 2 2 test: loop alignment 0 0 1 15 1111 OFF OFF OFF OFF 2 0 9 2 2 chip power-down 0 0 1 [1] reserved F: Octets per frame clock cycle HD: High-density mode K: Frame per multi-frame M: Converters per device L: Lane per converter device CS: Number of control bits per conversion sample CF: Control words per frame clock cycle and link S: Number of samples transmitted per single converter per frame cycle ADC1613D_SER 4 Product data sheet © IDT 2012. All rights reserved. Rev. 04 — 2 July 2012 31 of 41 ADC1613D series Integrated Device Technology Dual 16-bit ADC: serial JESD204A interface Table 30. SER_Control1 (address 0805h) Default values are highlighted. Bit Symbol Access Value Description 7 - - 0 not used 6 TRISTATE_CFG_PINS R/W 1 pins CFG3 to CFG0 are set to high-impedance. Switch to 0 automatically after start-up or reset. 5 SYNC_POL R/W 4 SYNC_SINGLE_ENDED - - 2 REV_SCR - REV_ENCODER synchronization signal is active LOW 1 synchronization signal is active HIGH R/W 3 1 defines the sync signal polarity: 0 defines the input mode of the sync signal: 0 synchronization input mode is set in Differential mode 1 synchronization input mode is set in Single-ended mode 1 not used LSBs are swapped with MSBs at the scrambler input: 0 disable 1 enable - LSBs are swapped with MSBs at the 8-bit/10-bit encoder input: 0 disable 1 0 REV_SERIAL enable - LSBs are swapped with MSBs at the lane input: 0 disable 1 enable Table 31. SER_Control2 (address 0806h) Default values are highlighted. Bit Access Value Description 7 to 2 - - not used 1 R/W 0 Symbol SWAP_LANE_0_1 SWAP_ADC_A_B 000000 swaps the outputs of the JESD204A unit (output buffer A is connected to Lane 1, output buffer B is connected to Lane 0) 0 disable 1 enable R/W swaps the inputs of the JESD204A unit (ADC A output is connected to ADC input B, ADC B is connected to ADC input A) 0 disable 1 enable Table 32. SER_Analog_Ctrl (address 0808h) Default values are highlighted. Bit Symbol Access Value Description 7 to 3 - - 00000 not used 2 to 0 SWING_SEL[2:0] R/W 011 defines the swing of output buffers A and B ADC1613D_SER 4 Product data sheet © IDT 2012. All rights reserved. Rev. 04 — 2 July 2012 32 of 41 ADC1613D series Integrated Device Technology Dual 16-bit ADC: serial JESD204A interface Table 33. SER_ScramblerA (address 0809h) Default values are highlighted. Bit Symbol Access Value Description 7 - - 0 not used R/W 0000000 defines the initialization vector for the scrambler polynomial (lower) 6 to 0 LSB_INIT[6:0] Table 34. SER_ScramblerB (address 080Ah) Default values are highlighted. Bit Symbol 7 to 0 MSB_INIT[7:0] Access Value Description R/W defines the initialization vector for the scrambler polynomial (upper) 11111111 Table 35. SER_PRBS_Ctrl (address 080Bh) Default values are highlighted. Bit Symbol Access Value 7 to 2 - - 1 to 0 PRBS_TYPE[1:0] R/W 000000 Description not used defines the type of Pseudo-Random Binary Sequence (PRBS) generator to be used: 00 (reset) PRBS-7 01 PRBS-7 10 PRBS-23 11 PRBS-31 Table 36. Cfg_0_DID (address 0820h) Default values are highlighted. Bit Symbol 7 to 0 DID[7:0] Access Value Description R defines the device (= link) identification number 11101101 Table 37. Cfg_1_BID (address 0821h) Default values are highlighted. Bit Symbol Access Value Description 7 to 4 - - 0000 not used 3 to 0 BID[3:0] R/W 1010 defines the bank ID – extension to DID Table 38. Cfg_3_SCR_L (address 0822h) Default values are highlighted. Bit Symbol Access Value Description 7 SCR R/W scrambling enabled 0 6 to 1 - - 000000 not used 0 R/W 0 defines the number of lanes per converter device, minus 1 L Table 39. Cfg_4_F (address 0823h) Default values are highlighted. Bit Access Value Description 7 to 3 - Symbol - 00000 not used 2 to 0 F[2:0] R/W 001 defines the number of octets per frame, minus 1 ADC1613D_SER 4 Product data sheet © IDT 2012. All rights reserved. Rev. 04 — 2 July 2012 33 of 41 ADC1613D series Integrated Device Technology Dual 16-bit ADC: serial JESD204A interface Table 40. Cfg_5_K (address 0824h) Default values are highlighted. Bit Access Value Description 7 to 5 - Symbol - 000 not used 4 to 0 K[4:0] R/W 01000 defines the number of frames per multiframe, minus 1 Table 41. Cfg_6_M (address 0825h) Default values are highlighted. Bit Symbol Access Value Description 7 to 1 - - 0000000 not used 0 R/W 0 defines the number of converters per device, minus 1 M Table 42. Cfg_7_CS_N (address 0826h) Default values are highlighted. Bit Symbol Access Value Description 7 - - not used 6 CS[0] 0 R/W 1 defines the number of control bits per sample, minus 1 5 to 4 - - 00 not used 3 to 0 N[3:0] R/W 0111 defines the converter resolution Table 43. Cfg_8_Np (address 0827h) Default values are highlighted. Bit Symbol Access Value Description 7 to 5 - - 000 not used 4 to 0 NP[4:0] R/W 01111 defines the total number of bits per sample, minus 1 Table 44. Cfg_9_S (address 0828h) Default values are highlighted. Bit Symbol Access Value Description 7 to 1 - - 0000000 not used 0 R/W 0 defines number of samples per converter per frame cycle S Table 45. Cfg_10_HD_CF (address 0829h) Default values are highlighted. Bit Symbol 7 HD Access Value Description R/W 0 defines high density format 6 to 2 - - 00000 not used 1 to 0 CF[1:0] R/W 00 defines number of control words per frame clock cycle per link. Table 46. Cfg01_2_LID (address 082Ch) Default values are highlighted. Bit Symbol Access Value Description 7 to 5 - - 000 not used 4 to 0 LID[4:0] R/W 11011 defines lane 0 identification number ADC1613D_SER 4 Product data sheet © IDT 2012. All rights reserved. Rev. 04 — 2 July 2012 34 of 41 ADC1613D series Integrated Device Technology Dual 16-bit ADC: serial JESD204A interface Table 47. Cfg02_2_LID (address 082Dh) Default values are highlighted. Bit Access Value Description 7 to 5 - Symbol - 000 not used 4 to 0 LID[4:0] R/W 11100 defines lane 1 identification number Table 48. Cfg01_13_FCHK (address 084Ch) Default values are highlighted. Bit Symbol 7 to 0 FCHK[7:0] Access Value R Description 00000000 defines the checksum value for lane 0 checksum corresponds to the sum of all the link configuration parameters module 256 (as defined in JEDEC Standard No.204A) Table 49. Cfg02_13_FCHK (address 084Dh) Default values are highlighted. Bit Symbol 7 to 0 FCHK[7:0] Access Value R Description 00000000 defines the checksum value for lane 1 checksum corresponds to the sum of all the link configuration parameters module 256 (as defined in JEDEC Standard No.204A) Table 50. Lane0_0_Ctrl (address 0870h) Default values are highlighted. Bit Symbol Access Value Description 7 - - not used 6 SCR_IN_MODE R/W 5 to 4 LANE_MODE[1:0] - - 2 LANE_POL R/W LANE_CLK_POS_EDGE defines the input type for scrambler and 8-bit/10-bit units: 0 (reset) (normal mode) = input of the scrambler and 8-bit/10-bit units is the output of the frame assembly unit. 1 input of the scrambler and 8-bit/10-bit units is the PRBS generator (PRBS type is defined with “PRBS_TYPE” (Ser_PRBS_ctrl register) R/W 3 1 0 defines output type of lane output unit: 00 (reset) normal mode: lane output is the 8-bit/10-bit output unit 01 constant mode: lane output is set to a constant (0  0) 10 toggle mode: lane output is toggling between 0  0 and 0  1 11 PRBS mode: lane output is the PRSB generator (PRBS type is defined with “PRBS_TYPE” (Ser_PRBS_Ctrl register) 0 not used defines lane polarity: 0 lane polarity is normal 1 lane polarity is inverted R/W defines lane clock polarity: 0 lane clock provided to the serializer is active on positive edge 1 lane clock provided to the serializer is active on negative edge ADC1613D_SER 4 Product data sheet © IDT 2012. All rights reserved. Rev. 04 — 2 July 2012 35 of 41 ADC1613D series Integrated Device Technology Dual 16-bit ADC: serial JESD204A interface Table 50. Lane0_0_Ctrl (address 0870h) …continued Default values are highlighted. Bit Symbol Access Value Description 0 LANE_PD R/W lane power-down control: 0 lane is operational 1 lane is in Power-down mode Table 51. Lane1_0_ctrl (address 0871h) Default values are highlighted. Bit Symbol Access Value Description 7 - - not used 6 SCR_IN_MODE R/W 5 to 4 LANE_MODE[1:0] - - 2 LANE_POL R/W 0 LANE_CLK_POS_EDGE LANE_PD defines the input type for scrambler and 8-bit/10-bit units: 0 (reset) (normal mode) = input of the scrambler and 8-bit/10-bit units is the output of the frame assembly unit. 1 input of the scrambler and 8-bit/10-bit units is the PRBS generator (PRBS type is defined with “PRBS_TYPE” (Ser_PRBS_Ctrl register) R/W 3 1 0 defines output type of lane output unit: 00 (reset) normal mode: lane output is the 8-bit/10-bit output unit 01 constant mode: lane output is set to a constant (0x0) 10 toggle mode: lane output is toggling between 0x0 and 0x1 11 PRBS mode: lane output is the PRBS generator (PRBS type is defined with “PRBS_TYPE” (Ser_PRBS_Ctrl register) 0 not used defines lane polarity: 0 lane polarity is normal 1 lane polarity is inverted R/W defines lane clock polarity: 0 lane clock provided to the serializer is active on positive edge 1 lane clock provided to the serializer is active on negative edge R/W lane power-down control: 0 lane is operational 1 lane is in Power-down mode ADC1613D_SER 4 Product data sheet © IDT 2012. All rights reserved. Rev. 04 — 2 July 2012 36 of 41 ADC1613D series Integrated Device Technology Dual 16-bit ADC: serial JESD204A interface Table 52. ADCA_0_ctrl (address 0890h) Default values are highlighted. Bit Access Value Description 7 to 6 - Symbol - not used 5 to 4 ADC_MODE[1:0] R/W 00 defines input type of JESD204A unit: 00 (reset) 3 to 1 - - 0 R/W ADC_PD ADC output is connected to the JESD204A input 01 not used 10 JESD204A input is fed with a dummy constant, set to: ADC[15:0] = “1001101110101000” 11 JESD204A is fed with a PRBS generator (PRBS type is defined with “PRBS_TYPE” (Ser_PRBS_ctrl register) 000 not used ADC power-down control: 0 ADC is operational 1 ADC is in Power-down mode Table 53. ADCB_0_ctrl (address 0891h) Default values are highlighted. Bit Symbol Access Value Description 7 to 6 - - not used 5 to 4 ADC_MODE[1:0] R/W 3 to 1 - - 0 R/W ADC_PD 00 defines input type of JESD204A unit 00 (reset) ADC output is connected to the JESD204A input 01 not used 10 JESD204A input is fed with a dummy constant, set to: ADC[15:0] = “1001101110101000” 11 JESD204A is fed with a PRBS generator (PRBS type is defined with “PRBS_TYPE” (Ser_PRBS_ctrl register) 000 not used ADC power-down control: 0 ADC is operational 1 ADC is in Power-down mode ADC1613D_SER 4 Product data sheet © IDT 2012. All rights reserved. Rev. 04 — 2 July 2012 37 of 41 ADC1613D series Integrated Device Technology Dual 16-bit ADC: serial JESD204A interface 12. Package outline HVQFN56: plastic thermal enhanced very thin quad flat package; no leads; 56 terminals; body 8 x 8 x 0.85 mm A B D SOT684-7 terminal 1 index area A E A1 c detail X e1 e 1/2 e L 15 28 14 C C A B C v w b y1 C y 29 e e2 Eh 1/2 e 1 42 terminal 1 index area 56 43 X Dh 0 2.5 Dimensions Unit mm 5 mm scale A(1) A1 b max 1.00 0.05 0.30 nom 0.85 0.02 0.21 min 0.80 0.00 0.18 c D(1) Dh E(1) Eh e e1 e2 L v 0.2 8.1 8.0 7.9 5.95 5.80 5.65 8.1 8.0 7.9 6.55 6.40 6.25 0.5 6.5 6.5 0.5 0.4 0.3 0.1 w y 0.05 0.05 y1 0.1 Note 1. Plastic or metal protrusions of 0.075 mm maximum per side are not included. References Outline version IEC JEDEC JEITA SOT684-7 --- MO-220 --- sot684-7_po European projection Issue date 08-11-19 09-03-04 Fig 24. Package outline SOT684-7 (HVQFN56) ADC1613D_SER 4 Product data sheet © IDT 2012. All rights reserved. Rev. 04 — 2 July 2012 38 of 41 ADC1613D series Integrated Device Technology Dual 16-bit ADC: serial JESD204A interface 13. Abbreviations Table 54. Abbreviations Acronym Description ADC Analog-to-Digital Converter DCS Duty Cycle Stabilizer ESD ElectroStatic Discharge IF Intermediate Frequency IMD InterModulation Distortion LSB Least Significant Bit LVCMOS Low Voltage Complementary Metal Oxide Semiconductor LVPECL Low-Voltage Positive Emitter-Coupled Logic MSB Most Significant Bit OTR OuT-of-Range PRBS Pseudo-Random Binary Sequence SFDR Spurious-Free Dynamic Range SNR Signal-to-Noise Ratio SPI Serial Peripheral Interface TX Transmitter ADC1613D_SER 4 Product data sheet © IDT 2012. All rights reserved. Rev. 04 — 2 July 2012 39 of 41 ADC1613D series Integrated Device Technology Dual 16-bit ADC: serial JESD204A interface 14. Revision history Table 55. Revision history Document ID Release date Data sheet status Change notice Supersedes ADC1613D_SER v.4 20120702 Product data sheet - ADC1613D_SER v.3 ADC1613D_SER v.3 20110209 Product data sheet - ADC1613D_SER v.2 Modifications: • • • • • Data sheet status changed from Preliminary to Product. Text and drawings updated throughout entire data sheet. Table 29 “JESD204A configuration table” added to Section 11.6.4. All tables in Section 11.6.2 have been updated. Section 13 “Abbreviations” added to the data sheet. ADC1613D_SER v.2 20100423 Preliminary data sheet - ADC1613D_SER v.1 ADC1613D_SER v.1 20100413 Objective data sheet - - 15. Contact information For more information or sales office addresses, please visit: http://www.idt.com ADC1613D_SER 4 Product data sheet © IDT 2012. All rights reserved. Rev. 04 — 2 July 2012 40 of 41 ADC1613D series Integrated Device Technology Dual 16-bit ADC: serial JESD204A interface 16. Contents 1 2 3 4 5 6 6.1 6.2 7 8 9 10 10.1 10.2 10.3 10.4 11 11.1 11.1.1 11.1.2 11.1.3 11.2 11.2.1 General description . . . . . . . . . . . . . . . . . . . . . . 1 Features and benefits . . . . . . . . . . . . . . . . . . . . 1 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Ordering information . . . . . . . . . . . . . . . . . . . . . 2 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Pinning information . . . . . . . . . . . . . . . . . . . . . . 4 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4 Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 6 Thermal characteristics . . . . . . . . . . . . . . . . . . 6 Static characteristics. . . . . . . . . . . . . . . . . . . . . 7 Dynamic characteristics . . . . . . . . . . . . . . . . . 10 Dynamic characteristics . . . . . . . . . . . . . . . . . 10 Clock and digital output timing . . . . . . . . . . . . 11 Serial output timing . . . . . . . . . . . . . . . . . . . . . 12 SPI timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Application information. . . . . . . . . . . . . . . . . . 14 Analog inputs . . . . . . . . . . . . . . . . . . . . . . . . . 14 Input stage description . . . . . . . . . . . . . . . . . . 14 Anti-kickback circuitry . . . . . . . . . . . . . . . . . . . 14 Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . 15 System reference and power management . . 16 Internal/external reference . . . . . . . . . . . . . . . 16 11.2.2 Programmable full-scale . . . . . . . . . . . . . . . . 11.2.3 Common-mode output voltage (VO(cm)) . . . . . 11.2.4 Biasing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.3 Clock input . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.3.1 Drive modes. . . . . . . . . . . . . . . . . . . . . . . . . . 11.3.2 Equivalent input circuit . . . . . . . . . . . . . . . . . . 11.3.3 Clock input divider . . . . . . . . . . . . . . . . . . . . . 11.3.4 Duty cycle stabilizer . . . . . . . . . . . . . . . . . . . . 11.4 Digital outputs . . . . . . . . . . . . . . . . . . . . . . . . 11.4.1 Serial output equivalent circuit . . . . . . . . . . . . 11.5 JESD204A serializer . . . . . . . . . . . . . . . . . . . 11.5.1 Digital JESD204A formatter . . . . . . . . . . . . . . 11.5.2 ADC core output codes versus input voltage . 11.6 Serial Peripheral Interface (SPI) . . . . . . . . . . 11.6.1 Register description . . . . . . . . . . . . . . . . . . . . 11.6.2 Channel control . . . . . . . . . . . . . . . . . . . . . . . 11.6.3 Register description . . . . . . . . . . . . . . . . . . . . 11.6.3.1 ADC control registers. . . . . . . . . . . . . . . . . . . 11.6.4 JESD204A digital control registers . . . . . . . . 12 Package outline. . . . . . . . . . . . . . . . . . . . . . . . 13 Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . 14 Revision history . . . . . . . . . . . . . . . . . . . . . . . 15 Contact information . . . . . . . . . . . . . . . . . . . . 16 Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ADC1613D_SER 4 Product data sheet 18 19 19 19 19 20 21 21 21 21 22 22 23 24 24 25 28 28 30 38 39 40 40 41 © IDT 2012. All rights reserved. Rev. 04 — 2 July 2012 41 of 41