LTC2158IUP-14#TRPBF

LTC2158-14 Dual 14-Bit 310Msps ADC FEATURES DESCRIPTION 68.8dBFS SNR n 88dB SFDR n Low Power: 724mW Total n Single 1.8V Supply n DDR LVDS Outputs n Easy-to-Drive 1.32V P-P Input Range n 1.25GHz Full Power Bandwidth S/H n Optional Clock Duty Cycle Stabilizer n Low Power Sleep and Nap Modes n Serial SPI Port for Configuration n Pin-Compatible 12-Bit Version n 64-Lead (9mm × 9mm) QFN Package The LTC®2158-14 is a 2-channel simultaneous sampling 310Msps 14-bit A/D converter designed for digitizing high frequency, wide dynamic range signals. It is perfect for demanding communications applications with AC performance that includes 68.8dB SNR and 88dB spurious free dynamic range (SFDR). The 1.25GHz input bandwidth allows the ADC to undersample high frequencies with good performance. The latency is only six clock cycles. n DC specs include ±1.2LSB INL (typ), ±0.35LSB DNL (typ) and no missing codes over temperature. The transition noise is 2.11LSBRMS. The digital outputs are double data rate (DDR) LVDS. APPLICATIONS n n n n n n The ENC+ and ENC– inputs can be driven differentially with a sine wave, PECL, LVDS, TTL, or CMOS inputs. An optional clock duty cycle stabilizer allows high performance at full speed for a wide range of clock duty cycles. Communications Cellular Basestations Software Defined Radios Medical Imaging High Definition Video Testing and Measurement Instruments L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATION LTC2158-14 32K Point 2-Tone FFT, fIN = 71MHz and 69MHz, 310Msps VDD OVDD ANALOG INPUT CLOCK S/H CLOCK/DUTY CYCLE CONTROL 14-BIT PIPELINED ADC CORE CORRECTION LOGIC DA12_13 • • • DA0_1 OUTPUT DRIVERS 0 OGND OVDD CHANNEL B –20 DDR LVDS AMPLITUDE (dBFS) CHANNEL A –40 –60 –80 –100 ANALOG INPUT S/H 14-BIT PIPELINED ADC CORE CORRECTION LOGIC DB12_13 • • • DB0_1 OUTPUT DRIVERS DDR LVDS –120 0 20 40 60 80 100 120 140 FREQUENCY (MHz) 215814 TA01b GND 215814 TA01 OGND 215814fa For more information www.linear.com/LTC2158-14 1 LTC2158-14 ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Notes 1, 2) 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 VDD PAR/SER CS SCK SDI SDO GND DA12_13+ DA12_13– DA10_11+ DA10_11– DA8_9+ DA8_9– DA6_7+ DA6_7 – OVDD TOP VIEW VDD 1 VDD 2 GND 3 AINA+ 4 AINA– 5 GND 6 SENSE 7 VREF 8 GND 9 VCM 10 GND 11 AINB– 12 AINB+ 13 GND 14 VDD 15 VDD 16 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 65 GND OGND DA4_5+ DA4_5– DA2_3+ DA2_3– DA0_1+ DA0_1– CLKOUT+ CLKOUT– DB12_13+ DB12_13– DB10_11+ DB10_11– DB8_9+ DB8_9– OGND VDD GND ENC+ ENC– GND OF – OF + DB0_1– DB0_1+ DB2_3– DB2_3+ DB4_5– DB4_5+ DB6_7 – DB6_7+ OVDD 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Supply Voltage VDD, OVDD................................................. –0.3V to 2V Analog Input Voltage AINA/B+, AINA/B –, PAR/SER, SENSE (Note 3)......................... –0.3V to (VDD + 0.2V) Digital Input Voltage ENC+, ENC– (Note 3)................. –0.3V to (VDD + 0.3V) CS, SDI, SCK (Note 4)............................ –0.3V to 3.9V SDO (Note 4).............................................. –0.3V to 3.9V Digital Output Voltage................. –0.3V to (OVDD + 0.3V) Operating Temperature Range LTC2158C................................................. 0°C to 70°C LTC2158I..............................................–40°C to 85°C Storage Temperature Range................... –65°C to 150°C UP PACKAGE 64-LEAD (9mm × 9mm) PLASTIC QFN TJMAX = 150°C, θJA = 27.4°C/W EXPOSED PAD (PIN 65) IS GND, MUST BE SOLDERED TO PCB ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC2158CUP-14#PBF LTC2158CUP-14#TRPBF LTC2158UP-14 64-Lead (9mm × 9mm) Plastic QFN 0°C to 70°C LTC2158IUP-14#PBF LTC2158IUP-14#TRPBF LTC2158UP-14 64-Lead (9mm × 9mm) Plastic QFN –40°C to 85°C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/ 2 215814fa For more information www.linear.com/LTC2158-14 LTC2158-14 CONVERTER CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 5) PARAMETER CONDITIONS MIN Resolution (No Missing Codes) l 14 TYP MAX UNITS Bits Integral Linearity Error Differential Analog Input (Note 6) l –7.5 ±1.2 7.5 LSB Differential Linearity Error Differential Analog Input l –1 ±0.35 1 LSB Offset Error (Note 7) l –15 ±5 15 mV Gain Error Internal Reference External Reference l –4.5 ±1.5 ±1 3 %FS %FS Offset Drift Full-Scale Drift Internal Reference External Reference Transition Noise ±20 µV/°C ±30 ±10 ppm/°C ppm/°C 2.11 LSBRMS ANALOG INPUT The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 5) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VIN Analog Input Range (AIN+ – AIN–) 1.74V < VDD < 1.9V l VIN(CM) Analog Input Common Mode (AIN+ + AIN–)/2 Differential Analog Input (Note 8) l VCM – 20mV VCM VCM + 20mV V VSENSE External Voltage Reference Applied to SENSE External Reference Mode l 1.230 1.250 1.270 V l –1 1 µA 1.32 VP-P IIN1 Analog Input Leakage Current 0 < AIN+, AIN– < VDD, No Encode IIN2 PAR/SER Input Leakage Current 0 < PAR/SER < VDD l –1 1 µA IIN3 SENSE Input Leakage Current 1.23V < SENSE < 1.27V l –1 1 µA tAP Sample-and-Hold Acquisition Delay Time 1 tJITTER Sample-and-Hold Acquisition Delay Jitter 0.15 CMRR Analog Input Common Mode Rejection Ratio BW-3B Full-Power Bandwidth ns psRMS 75 dB 1250 MHz DYNAMIC ACCURACY The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. AIN = –1dBFS. (Note 5) SYMBOL PARAMETER CONDITIONS SNR Signal-to-Noise Ratio 15MHz Input 70MHz Input 140MHz Input SFDR Spurious Free Dynamic Range 2nd or 3rd Harmonic 15MHz Input 70MHz Input 140MHz Input Spurious Free Dynamic Range 4th Harmonic or Higher S/(N+D) Signal-to-Noise Plus Distortion Ratio Crosstalk Crosstalk Between Channels 15MHz Input 70MHz Input 140MHz Input 15MHz Input 70MHz Input 140MHz Input Up to 315MHz Input l l l l MIN TYP MAX UNITS 66 68.8 68.4 67.7 dBFS dBFS dBFS 70 88 85 79 dBFS dBFS dBFS 80 98 95 90 dBFS dBFS dBFS 65 68.7 68.4 67.2 dBFS dBFS dBFS –95 dB 215814fa For more information www.linear.com/LTC2158-14 3 LTC2158-14 INTERNAL REFERENCE CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 5) PARAMETER CONDITIONS VCM Output Voltage IOUT = 0 MIN TYP MAX 0.435 • VDD – 18mV 0.435 • VDD 0.435 • VDD + 18mV VCM Output Temperature Drift UNITS ±37 VCM Output Resistance –1mA < IOUT < 1mA VREF Output Voltage IOUT = 0 ppm/°C 4 1.225 Ω 1.250 VREF Output Temperature Drift 1.275 V ±30 VREF Output Resistance –400µA < IOUT < 1mA VREF Line Regulation 1.74V < VDD < 1.9V V ppm/°C 7 Ω 0.6 mV/V POWER REQUIREMENTS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 5) SYMBOL PARAMETER MIN TYP MAX VDD Analog Supply Voltage (Note 9) CONDITIONS l 1.74 1.8 1.9 UNITS V OVDD Output Supply Voltage (Note 9) l 1.74 1.8 1.9 V l IVDD Analog Supply Current 355 395 mA IOVDD Digital Supply Current 1.75mA LVDS Mode 3.5mA LVDS Mode l l 47 77 55 90 mA mA PDISS Power Dissipation 1.75mA LVDS Mode 3.5mA LVDS Mode l l 724 777 810 873 mW mW PSLEEP Sleep Mode Power Clock Disabled Clocked at fS(MAX)