SI4122

Si4133 Si4123/22/13/12 D U A L - B A N D R F S Y N T H E S I Z E R W I T H I N TE G R A T E D V C O S F OR W I R E L E S S C O M M U N I C A T I O N S FEATURES  Dual-band RF synthesizers RF1:      900 MHz to 1.8 GHz RF2: 750 MHz to 1.5 GHz    IF synthesizer IF: 62.5 to 1000 MHz Integrated VCOs, loop filters,  varactors, and resonators Minimal (2) number of external components required Low phase noise Programmable powerdown modes 1 µA standby current 18 mA typical supply current 2.7 to 3.6 V operation Packages: 24-pin TSSOP, 28-lead QFN Lead-free Ordering Information: See page 31. and RoHS compliant Applications      Pin Assignments Dual-band communications Digital cellular telephones GSM 850, E-GSM 900, DCS 1800, PCS 1900 Digital cordless phones Analog cordless phones Wireless local loop Si4133-GT SCLK SDATA GNDR RFLD 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 SEN VDDI IFOUT GNDI IFLB IFLA GNDD VDDD GNDD XIN PWDN AUXOUT Description The Si4133 is a monolithic integrated circuit that performs both IF and dualband RF synthesis for wireless communications applications. The Si4133 includes three VCOs, loop filters, reference and VCO dividers, and phase detectors. Divider and powerdown settings are programmable with a threewire serial interface. RFLC GNDR RFLB RFLA GNDR GNDR RFOUT Functional Block Diagram VDDR XIN SDATA IFOUT GNDR Reference Amplifier Powerdown Control R Si4133-GM SCLK RF1 PWDN N R Phase Detector RF2 RFOUT GNDR 28 27 26 25 24 23 22 1 2 3 4 5 6 7 8 GNDR SEN VDDI RFLB GNDI Phase Detector RFLA 21 20 19 GNDI IFLB IFLA GNDD VDDD GNDD XIN SDATA SCLK SEN Serial Interface 22-bit Data Register RFLC RFLD RFLD RFLC GNDR RFLB N R Phase Detector IF GND Pad 18 17 16 15 AUXOUT Test Mux IFDIV IFOUT RFLA GNDR PWDN GNDR Patents pending Rev. 1.61 1/10 Copyright © 2010 by Silicon Laboratories Si4133 RFOUT GNDD VDDR IFLB AUXOUT N IFLA 9 10 11 12 13 14 S i4133 2 Rev. 1.61 S i4133 TABLE O F C ONTENTS Section Page 1. Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 2. Typical Application Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3. Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.1. Serial Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.2. Setting the VCO Center Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.3. Extended Frequency Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 3.4. Self-Tuning Algorithm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 3.5. Output Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 3.6. PLL Loop Dynamics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 3.7. RF and IF Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 3.8. Reference Frequency Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 3.9. Powerdown Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 3.10. Auxiliary Output (AUXOUT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 4. Control Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 5. Pin Descriptions: Si4133-GT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 6. Pin Descriptions: Si4133-GM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 7. Ordering Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 8. Si4133 Derivative Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31 9. Package Outline: Si4133-GT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 10. Package Outline: Si4133-GM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Document Change List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34 Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36 Rev. 1.61 3 S i4133 1. Electrical Specifications Table 1. Recommended Operating Conditions Parameter Ambient Temperature Supply Voltage Supply Voltages Difference Symbol TA VDD V (VDDR – VDDD), (VDDI – VDDD) Test Condition Min –40 2.7 –0.3 Typ 25 3.0 — Max 85 3.6 0.3 Unit °C V V Note: All minimum and maximum specifications are guaranteed and apply across the recommended operating conditions. Typical values apply at nominal supply voltages and an operating temperature of 25 °C unless otherwise stated. Table 2. Absolute Maximum Ratings1,2 Parameter DC Supply Voltage Input Current3 Input Voltage3 Storage Temperature Range Symbol VDD IIN VIN TSTG Value –0.5 to 4.0 ±10 –0.3 to VDD+0.3 –55 to 150 Unit V mA V oC Notes: 1. Permanent device damage may occur if the above Absolute Maximum Ratings are exceeded. Functional operation should be restricted to the conditions as specified in the operational sections of this data sheet. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. 2. This device is a high performance RF integrated circuit with an ESD rating of < 2 kV. Handling and assembly of this device should only be done at ESD-protected workstations. 3. For signals SCLK, SDATA, SEN, PWDN and XIN. 4 Rev. 1.61 S i4133 Table 3. DC Characteristics (VDD = 2.7 to 3.6 V, TA = –40 to 85 °C) Parameter Total Supply Current 1 Symbol Test Condition RF1 and IF operating Min — — — — Typ 18 10 9 8 1 — — — — — — Max 27 16 16 13 — — 0.3 VDD 10 10 — 0.4 Unit mA mA mA mA µA V V µA µA V V RF1 Mode Supply Current1 RF2 Mode Supply Current1 IF Mode Supply Current1 Standby Current High Level Input Voltage2 Low Level Input Voltage2 High Level Input Current2 Low Level Input Current2 High Level Output Voltage3 Low Level Output Voltage3 VIH VIL IIH IIL VOH VOL VIH = 3.6 V, VDD = 3.6 V VIL = 0 V, VDD= 3.6 V IOH = –500 µA IOH = 500 µA PWDN = 0 — 0.7 VDD — –10 –10 VDD–0.4 — Notes: 1. RF1 = 1.6 GHz, RF2 = 1.1 GHz, IFOUT = 550 MHz, LPWR = 0. 2. For signals SCLK, SDATA, SEN, and PWDN. 3. For signal AUXOUT. Rev. 1.61 5 S i4133 Table 4. Serial Interface Timing (VDD = 2.7 to 3.6 V, TA = –40 to 85 °C) Parameter1 SCLK Cycle Time SCLK Rise Time SCLK Fall Time SCLK High Time SCLK Low Time SDATA Setup Time to SCLK2 SDATA Hold Time from SCLK2 SEN to SCLKDelay Time 2 Symbol tclk tr tf th tl tsu thold ten1 ten2 ten3 tw Test Condition Figure 1 Figure 1 Figure 1 Figure 1 Figure 1 Figure 2 Figure 2 Figure 2 Figure 2 Figure 2 Figure 2 Min 40 — — 10 10 5 0 10 12 12 10 Typ — — — — — — — — — — — Max — 50 50 — — — — — — — — Unit ns ns ns ns ns ns ns ns ns ns ns SCLK to SENDelay Time2 SEN to SCLKDelay Time2 SEN Pulse Width Notes: 1. All timing is referenced to the 50% level of the waveforms unless otherwise noted. 2. Timing is not referenced to 50% level of the waveform. See Figure 2. tr 80% tf S CLK 50% 20% th t clk tl Figure 1. SCLK Timing Diagram 6 Rev. 1.61 S i4133 ts u t hold S CLK S DA TA D17 D16 D15 A1 A0 t en3 ten2 ten1 S E NB tw Figure 2. Serial Interface Timing Diagram First bit c loc ked in Last bit clocked in DDDDDDDDD 17 16 15 14 13 12 11 10 9 D 8 D 7 D 6 D 5 D 4 D 3 D 2 D 1 D 0 A 3 A 2 A 1 A 0 data field address field Figure 3. Serial Word Format Rev. 1.61 7 S i4133 Table 5. RF and IF Synthesizer Characteristics (VDD = 2.7 to 3.6 V, TA = –40 to 85 °C) Parameter1 XIN Input Frequency Reference Amplifier Sensitivity Phase Detector Update Frequency RF1 VCO Center Frequency Range RF1 VCO Tuning Range2 RF2 VCO Center Frequency Range RF Tuning Range from fCEN IF VCO Center Frequency Range IFOUT Tuning Range IFOUT Tuning Range from fCEN RF1 VCO Pushing RF2 VCO Pushing IF VCO Pushing RF1 VCO Pulling RF2 VCO Pulling IF VCO Pulling RF1 Phase Noise RF1 Integrated Phase Error RF2 Phase Noise RF2 Integrated Phase Error IF Phase Noise IF Integrated Phase Error Symbol fREF VREF f fCEN Test Condition Min 2 0.5 Typ — — — — — — — — — — 500 400 300 400 300 100 –132 0.9 –134 0.7 –117 0.4 Max 26 VDD +0.3 V 1.0 1720 2050 1429 5 952 1000 5 — — — — — — — — — — — — Unit MHz VPP MHz MHz MHz MHz % MHz MHz % kHz/V kHz/V kHz/V kHzPP kHzPP kHzPP dBc/Hz degrees rms dBc/Hz degrees rms dBc/Hz degrees rms f= fREF/R 0.010 947 Extended frequency operation fCEN Note: LEXT ±10% fCEN with IFDIV Note: LEXT ±10% Open loop 1850 789 –5 526 62.5 –5 — — — VSWR = 2:1, all phases, open loop — — — 1 MHz offset 10 Hz to 100 kHz 1 MHz offset 10 Hz to 100 kHz 100 kHz offset 100 Hz to 100 kHz — — — — — — Notes: 1. f = 200 kHz, RF1 = 1.6 GHz, RF2 = 1.2 GHz, IFOUT = 550 MHz, LPWR = 0, for all parameters unless otherwise noted. 2. Extended frequency operation only. VDD  3.0 V, QFN only, VCO Tuning Range fixed by directly shorting the RFLA and RFLB pins. See Application Note 41 for more details on the Si4133 extended frequency operation. 3. From powerup request (PWDN or SEN during a write of 1 to bits PDIB and PDRB in Register 2) to RF and IF synthesizers ready (settled to within 0.1 ppm frequency error). 4. From powerdown request (PWDN, or SENduring a write of 0 to bits PDIB and PDRB in Register 2) to supply current equal to IPWDN. 8 Rev. 1.61 S i4133 Table 5. RF and IF Synthesizer Characteristics (Continued) (VDD = 2.7 to 3.6 V, TA = –40 to 85 °C) Parameter1 RF1 Harmonic Suppression RF2 Harmonic Suppression IF Harmonic Suppression RFOUT Power Level RFOUT Power Level2 Symbol Test Condition Second Harmonic Min — — — Typ –26 –26 –26 –3 –7 Max –20 –20 –20 1 1 Unit dBc dBc dBc dBm dBm ZL = 50 ZL = 50RF1 active, Extended frequency operation ZL = 50  Offset = 200 kHz Offset = 400 kHz Offset = 600 kHz –8 –14 IFOUT Power Level RF1 Output Reference Spurs –8 — — — — — — — — –4 –65 –71 –75 –65 –71 –75 40/f — 0 — — — — — — 50/f 100 dBm dBc dBc dBc dBc dBc dBc RF2 Output Reference Spurs Offset = 200 kHz Offset = 400 kHz Offset = 600 kHz Powerup Request to Synthesizer Ready Time 3 tpup tpdn Figures 4, 5 Figures 4, 5 Powerdown Request to Synthesizer Off4 Time ns Notes: 1. f = 200 kHz, RF1 = 1.6 GHz, RF2 = 1.2 GHz, IFOUT = 550 MHz, LPWR = 0, for all parameters unless otherwise noted. 2. Extended frequency operation only. VDD  3.0 V, QFN only, VCO Tuning Range fixed by directly shorting the RFLA and RFLB pins. See Application Note 41 for more details on the Si4133 extended frequency operation. 3. From powerup request (PWDN or SEN during a write of 1 to bits PDIB and PDRB in Register 2) to RF and IF synthesizers ready (settled to within 0.1 ppm frequency error). 4. From powerdown request (PWDN, or SENduring a write of 0 to bits PDIB and PDRB in Register 2) to supply current equal to IPWDN. Rev. 1.61 9 S i4133 RF and IF synthesizers settled to within 0.1 ppm frequency error. tpup tpdn IT IPWDN SEN SDATA PDIB = 1 PDRB = 1 PDIB = 0 PDRB = 0 Figure 4. Software Power Management Timing Diagram RF and IF synthesizers settled to within 0.1 ppm frequency error. tpup tpdn IT IPWDN PWDN Figure 5. Hardware Power Management Timing Diagram 10 Rev. 1.61 S i4133 TRACE A: Ch1 FM Main Time A Marker 1.424 kHz 174.04471 us 711.00 Hz Real 160 Hz /div 176 Hz Start: 0 s Stop: 399.6003996 us Figure 6. Typical Transient Response RF1 at 1.6 GHz with 200 kHz Phase Detector Update Frequency Rev. 1.61 11 S i4133 −60 −70 −80 Phase Noise (dBc/Hz) −90 −100 −110 −120 −130 −140 2 10 10 3 10 Offset Frequency (Hz) 4 10 5 10 6 Figure 7. Typical RF1 Phase Noise at 1.6 GHz with 200 kHz Phase Detector Update Frequency Figure 8. Typical RF1 Spurious Response at 1.6 GHz with 200 kHz Phase Detector Update Frequency 12 Rev. 1.61 S i4133 −60 −70 −80 Phase Noise (dBc/Hz) −90 −100 −110 −120 −130 −140 2 10 10 3 10 Offset Frequency (Hz) 4 10 5 10 6 Figure 9. Typical RF2 Phase Noise at 1.2 GHz with 200 kHz Phase Detector Update Frequency Figure 10. Typical RF2 Spurious Response at 1.2 GHz with 200 kHz Phase Detector Update Frequency Rev. 1.61 13 S i4133 −70 −80 −90 Phase Noise (dBc/Hz) −100 −110 −120 −130 −140 −150 2 10 10 3 10 Offset Frequency (Hz) 4 10 5 10 6 Figure 11. Typical IF Phase Noise at 550 MHz with 200 kHz Phase Detector Update Frequency Figure 12. IF Spurious Response at 550 MHz with 200 kHz Phase Detector Update Frequency 14 Rev. 1.61 S i4133 2. Typical Application Circuits VDD Si4133-GT From System Controller 1 2 3 4 5 SCLK SDATA GNDR RFLD RFLC GNDR RFLB RFLA GNDR GNDR RFOUT VDDR SEN VDDI IFOUT GNDI IFLB IFLA GNDD VDDD GNDD XIN PWDN AUXOUT 24 23 22 21 20 19 18 17 16 30  * 0.022  F 40 nH 560 pF IFOUT Printed Trace Inductors 6 7 8 9 10 Printed Trace Inductor or Chip Inductor VDD 0.022  F 560 pF 15 14 13 560 pF RFOUT 2 nH 11 External Clock PWDN AUXOUT 0.022 F VDD 12 * Add 30  series resistance if using IF output divide values 2, 4, or 8. Figure 13. Si4133-GT VDD 30  * 0.022  F 40 nH 560 pF IFOUT 28 27 26 25 24 23 22 From System Controller SDATA IFOU T GND R SCLK GND I VDD I SE N 1 2 3 GNDR RFLD RFLC GNDR RFLB RFLA RFOUT GNDR GNDR GNDR AUXOUT GNDI IFLB IFLA 21 20 19 18 17 16 15 Printed Trace Inductor or Chip Inductor Printed Trace Inductors 4 5 6 7 Si4133-GM GNDD VDDD GNDD XIN GNDD VDD 0.022 F 560 pF External Clock 8 9 10 11 12 13 PWDN VDDR 14 VDD 0.022F AUXOUT PWDN * Add 30  series resistance if using IF output divide values 2, 4, or 8. 2 nH 560 pF RFOUT Figure 14. Si4133-GM Rev. 1.61 15 S i4133 3. Functional Description The Si4133 is a monolithic integrated circuit that performs IF and dual-band RF synthesis for wireless communications applications. This integrated circuit (IC), with minimal external components, completes the frequency synthesis function necessary for RF communications systems. The Si4133 has three complete phase-locked loops (PLLs) with integrated voltage-controlled oscillators (VCOs). The low phase noise of the VCOs makes the Si4133 suitable for demanding wireless communications applications. Phase detectors, loop filters, and reference and output frequency dividers are integrated. The IC is programmed with a three-wire serial interface. Two PLLs are provided for dual-band RF synthesis. These RF PLLs are multiplexed so that only one PLL is active at a time, as determined by the setting of an internal register. The active PLL is the last one to be written. The center frequency of the VCO in each PLL is set by the value of an external inductance. Inaccuracies in these inductances are compensated for by the selftuning algorithm. The algorithm is run after powerup or after a change in the programmed output frequency. Each RF PLL, when active, can adjust the RF output frequency by ±5% of its VCO’s center frequency. Because the two VCOs can be set to have widely separated center frequencies, the RF output can be programmed to service two widely separated frequency bands by programming the corresponding N-Divider. One RF VCO is optimized to have its center frequency set between 947 MHz and 1.72 GHz, while the second RF VCO is optimized to have its center frequency set between 789 MHz and 1.429 GHz. One PLL is provided for IF frequency synthesis. The center frequency of this circuit’s VCO is set by the connection of an external inductance. The PLL can adjust the IF output frequency by ±5% of the VCO center frequency. Inaccuracies in the value of the external inductance are compensated for by the Si4133’s proprietary self-tuning algorithm. This algorithm is initiated each time the PLL is powered-up (by either the PWDN pin or by software) and/or each time a new output frequency is programmed. The IF VCO can have its center frequency set as low as 526 MHz and as high as 952 MHz. An IF output divider divides down the IF output frequencies, if needed. The divider is programmable and is capable of dividing by 1, 2, 4, or 8. The unique PLL architecture used in the Si4133 produces settling (lock) times that are comparable in speed to fractional-N architectures without the high phase noise or spurious modulation effects often associated with those designs. 3.1. Serial Interface A timing diagram for the serial interface is shown in Figure 2 on page 7. Figure 3 on page 7 shows the format of the serial word. The Si4133 is programmed serially with 22-bit words comprised of 18-bit data fields and 4-bit address fields. When the serial interface is enabled (i.e., when SEN is low) data and address bits on the SDATA pin are clocked into an internal shift register on the rising edge of SCLK. Data in the shift register is then transferred on the rising edge of SEN into the internal data register addressed in the address field. The serial interface is disabled when SEN is high. Table 12 on page 21 summarizes the data register functions and addresses. The internal shift register ignores leading bits before the 22 required bits. 3.2. Setting the VCO Center Frequencies The PLLs can adjust the IF and RF output frequencies ±5% of the center frequencies of their VCOs. Each center frequency is established by the value of an external inductance connected to the respective VCO. Manufacturing tolerances of ±10% for the external inductances are acceptable. The Si4133 compensates for inaccuracies in each inductance by executing a selftuning algorithm after PLL powerup or after a change in the programmed output frequency. Because the total tank inductance is in the low nH range, the inductance of the package must be considered when determining the correct external inductance. The total inductance (LTOT) presented to each VCO is the sum of the external inductance (LEXT) and the package inductance (LPKG). Each VCO has a nominal capacitance (CNOM) in parallel with the total inductance, and the center frequency is as follows: 1 f CEN = ---------------------------------------------2  L TOT  C NOM or 1 f CEN = -----------------------------------------------------------------------2   L PKG + L EXT   C NOM Tables 6 and 7 summarize the characteristics of each VCO. 16 Rev. 1.61 S i4133 Table 6. Si4133-GT VCO Characteristics VCO fCEN Range CNOM LPKG LEXT Range (MHz) (pF) (nH) (nH) Min Max Min Max the correct total inductance to the VCO. In manufacturing, the external inductance can vary ±10% of its nominal value and the Si4133 corrects for the variation with the self-tuning algorithm. For more information on designing the external trace inductors, refer to Application Note 31: Inductor Design for the Si41xx Synthesizer Family. RF1 RF2 IF 947 789 526 1720 1429 952 4.3 4.8 6.5 2.0 2.3 2.1 0.0 0.3 2.2 4.6 6.2 12.0 3.3. Extended Frequency Operation The Si4133 may operate at an extended frequency range of 1850 MHz to 2050 MHz by connecting the RFLA and RFLB pins directly. For information on configuring the Si4133 for extended frequency operation, refer to Application Note 41: Extended Frequency Operation of Silicon Laboratories Frequency Synthesizers. Table 7. Si4133-GM VCO Characteristics VCO fCEN Range CNOM LPKG LEXT Range (MHz) (pF) (nH) (nH) Min Max Min Max 3.4. Self-Tuning Algorithm The self-tuning algorithm is initiated immediately after powerup of a PLL or, if the PLL is already powered, after a change in its programmed output frequency. This algorithm attempts to tune the VCO so that its freerunning frequency is near the required output frequency. In doing so, the algorithm compensates for manufacturing tolerance errors in the value of the external inductance connected to the VCO. It also reduces the frequency error for which the PLL must correct to get the precise required output frequency. The self-tuning algorithm leaves the VCO oscillating at a frequency in error by somewhat less than 1% of the desired output frequency. After self-tuning, the PLL controls the VCO oscillation frequency. The PLL completes frequency locking, eliminating any remaining frequency error. From then on, it maintains frequency-lock, compensating for effects of temperature and supply voltage variations. The Si4133’s self-tuning algorithm compensates for component value errors at any temperature within the specified temperature range. However, the ability of the PLL to compensate for drift in component values that occur after self-tuning is limited. For external inductances with temperature coefficients approximately ±150 ppm/oC, the PLL can maintain lock for changes in temperature of approximately ±30 oC. Applications where the PLL is regularly powered down or the frequency is periodically reprogrammed minimize or eliminate the potential effects of temperature drift because the VCO is re-tuned in either case. In applications where the ambient temperature can drift substantially after self-tuning, it might be necessary to monitor the lock-detect bar (LDETB) signal on the AUXOUT pin to determine whether a PLL is about to run out of locking capability. See “3.10. Auxiliary Output RF1 RF2 IF 947 789 526 1720 1429 952 4.3 4.8 6.5 1.5 1.5 1.6 0.5 1.1 2.7 5.1 7.0 12.5 L PKG 2 L EXT L PKG 2 Figure 15. External Inductance Connection As a design example, consider that the goal is to synthesize frequencies in a 25 MHz band between 1120 and 1145 MHz using the Si4133-GT. The center frequency should be defined as midway between the two extremes, or 1132.5 MHz. The PLL can adjust the VCO output frequency ±5% of the center frequency, or ±56.6 MHz of 1132.5 MHz (i.e., from approximately 1076 to 1189 MHz). The RF2 VCO has a CNOM of 4.8 pF. A 4.1 nH inductance in parallel with this capacitance yields the required center frequency. An external inductance of 1.8 nH should be connected between RFLC and RFLD as shown in Figure 15. This, in addition to 2.3 nH of package inductance, presents Rev. 1.61 17 S i4133 (AUXOUT)” for how to select LDETB. The LDETB signal is low after self-tuning is completed but rises when the IF or RF PLL nears the limit of its compensation range. LDETB is also high when either PLL is executing the self-tuning algorithm. The output frequency is still locked when LDETB goes high, but the PLL eventually loses lock if the temperature continues to drift in the same direction. Therefore, if LDETB goes high both the IF and RF PLLs should be re-tuned promptly by initiating the self-tuning algorithm. setting the bits to 11. The values of the available gains, relative to the highest gain, are as follows: Table 8. Gain Values (Register 1) KP Bits Relative P.D. Gain 00 01 10 11 1 1/2 1/4 1/8 3.5. Output Frequencies The IF and RF output frequencies are set by programming the R- and N-Divider registers. Each PLL has R and N registers so that each can be programmed independently. Programming either the R- or N-Divider register for RF1 or RF2 automatically selects the associated output. The reference frequency on the XIN pin is divided by R and this signal is input to the PLL’s phase detector. The other input to the phase detector is the PLL’s VCO output frequency divided by N. The PLL acts to make these frequencies equal. That is, after an initial transient: f REF f OUT ----------- = ----------N R The gain value bits is automatically set with the Auto KP bit (bit 2) in the Main Configuration register to 1. In setting this bit, the gain values are optimized for a given value of N. In general, a higher phase detector gain decreases in-band phase noise and increase the speed of the PLL transient until the point at which stability begins to be compromised. The optimal gain depends on N. Table 9 lists recommended settings for different values of N. These are the settings when the Auto KP bit is set. Table 9. Optimal KP Settings N 2047 RF1 KP1 RF2 KP2 IF KPI or f OUT N = ---  f REF R 00 00 00 01 10 11 00 00 01 10 11 11 00 01 10 11 11 11 2048 to 4095 4096 to 8191 8192 to 16383 16384 to 32767 32768 The R values are set by programming the RF1 RDivider register (Register 6), the RF2 R-Divider register (Register 7) and the IF R-Divider register (Register 8). The N values are set by programming the RF1 NDivider register (Register 3), the RF2 N-Divider register (Register 4), and the IF N-Divider register (Register 5). Each N-Divider is implemented as a conventional high speed divider. That is, it consists of a dual-modulus prescaler, a swallow counter, and a lower speed synchronous counter. However, the control of these sub-circuits is automatically handled. Only the appropriate N value should be programmed. The VCO gain and loop filter characteristics are not programmable. The settling time for the PLL is directly proportional to its phase detector update period T (T equals 1/f). A typical transient response is shown in Figure 6 on page 11. During the first 13 update periods the Si4133 executes the self-tuning algorithm. From then on the PLL controls the output frequency. Because of the unique architecture of the Si4133 PLLs, the time required to settle the output frequency to 0.1 ppm error is automatically 25 update periods. The total time after powerup or a change in programmed frequency until the synthesized frequency is settled—including time for self-tuning—is approximately 40 update periods. Note: The settling time analysis holds for RF1 f  500 kHz. For RF1 f > 500 kHz, the settling time is larger. 3.6. PLL Loop Dynamics The transient response for each PLL is determined by its phase detector update rate f (equal to fREF/R) and the phase detector gain programmed for each RF1, RF2, or IF synthesizer. See Register 1. Four different settings for the phase detector gain are available for each PLL. The highest gain is programmed by setting the two phase detector gain bits to 00, and the lowest by 18 Rev. 1.61 S i4133 3.7. RF and IF Outputs The RFOUT and IFOUT pins are driven by amplifiers that buffer the RF VCOs and IF VCO respectively. The RF output amplifier receives its input from the RF1 or RF2 VCO, depending on which R- or N-Divider register is written last. For example, programming the N-Divider register for RF1 automatically selects the RF1 VCO output. Figures 13 and 14 show application diagrams for the Si4133. The RF output signal must be ac coupled to its load through a capacitor. An external inductance between the RFOUT pin and the ac coupling capacitor is required as part of an output matching network to maximize power delivered to the load. This 2 nH inductance can be realized with a PC board trace. The network is made to provide an adequate match to an external 50  load for both the RF1 and RF2 frequency bands. The matching network also filters the output signal to reduce harmonic distortion. The IFOUT pin must also be ac coupled to its load through a capacitor. The IF output level is dependent upon the load. Figure 18 on page 20 displays the output level versus load resistance for a variety of output frequencies. For resistive loads greater than 500  the output level saturates and the bias currents in the IF output amplifier are higher than required. The LPWR bit in the Main Configuration register (Register 0) can be set to 1 to reduce the bias currents and therefore reduce the power dissipated by the IF amplifier. For loads less than 500  LPWR should be set to 0 to maximize the output level. For IF frequencies greater than 500 MHz, a matching network is required to drive a 50 load. See Figure 16. The value of LMATCH can be determined from Table 10. For frequencies less than 500 MHz, the IF output buffer can directly drive a 200  resistive load or higher. For resistive loads greater than 500  (f < 500 MHz) the LPWR bit can be set to reduce the power consumed by the IF output buffer. See Figure 17. >500 pF IFOUT >200  Figure 17. IF Frequencies < 500 MHz 3.8. Reference Frequency Amplifier The Si4133 provides a reference frequency amplifier. If the driving signal has CMOS levels it can be connected directly to the XIN pin. Otherwise, the reference frequency signal should be ac coupled to the XIN pin through a 560 pF capacitor. 3.9. Powerdown Modes Table 11 summarizes the powerdown functionality. The Si4133 can be powered down by taking the PWDN pin low or by setting bits in the Powerdown register (Register 2). When the PWDN pin is low, the Si4133 is powered down regardless of the Powerdown register settings. When the PWDN pin is high, power management is in control of the Powerdown register bits. The IF and RF sections of the Si4133 circuitry can be individually powered down by setting the Powerdown register bits PDIB and PDRB low, respectively. The reference frequency amplifier is also powered up if the PDRB and PDIB bits are high. Also, setting the AUTOPDB bit to 1 in the Main Configuration register (Register 0) is equivalent to setting both bits in the Powerdown register to 1. The serial interface remains available and can be written in all powerdown modes. Table 10. LMATCH Values Frequency LMATCH 500–600 MHz 600–800 MHz 800 MHz–1 GHz 40 nH 27 nH 18 nH 560 pF IFOUT L MATCH 50  Figure 16. IF Frequencies > 500 MHz Rev. 1.61 19 S i4133 3.10. Auxiliary Output (AUXOUT) The signal appearing on AUXOUT is selected by setting the AUXSEL bits in the Main Configuration register (Register 0). The LDETB signal can be selected by setting the AUXSEL bits to 11. This signal can be used to indicate that the IF or RF PLL is going to lose lock because of excessive ambient temperature drift and should be re-tuned. The LDETB signal indicates a logical OR result if both IF and RF are simultaneously generating a signal. Table 11. Powerdown Configuration PWDN Pin AUTOPDB PDIB PDRB IF Circuitry RF Circuitry PWDN = 0 X 0 0 X 0 0 1 1 x X 0 1 0 1 x OFF OFF OFF ON ON ON OFF OFF ON OFF ON ON PWDN = 1 0 0 1 450 400 350 LPWR=1 LPWR=0 300 Output Voltage (mVrms) 250 200 150 100 50 0 0 200 400 600 Load Resistance ( ) 800 1000 1200 Figure 18. Typical IF Output Voltage vs. Load Resistance at 550 MHz 20 Rev. 1.61 S i4133 4. Control Registers Table 12. Register Summary Register Name Bit Bit Bit Bit 17 16 15 14 Bit 13 Bit 12 Bit 11 Bit Bit Bit Bit Bit 10 9 8 7 6 Bit 5 LPWR Bit 4 Bit 3 Bit 2 Bit 1 RF PWR Bit 0 0 Main Configuration Phase Detector Gain Powerdown RF1 N-Divider RF2 N-Divider IF N-Divider RF1 R-Divider RF2 R-Divider IF R-Divider Reserved 0 0 0 0 AUXSEL [1:0] IFDIV [1:0] 0 0 0 0 0 AUTO AUTO PDB KP 0 1 0 0 0 0 0 0 0 0 0 0 0 0 KPI[1:0] KP2[1:0] KP1[1:0] 2 3 4 5 6 7 8 9 . . . 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 PDIB PDRB NRF1[17:0] 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 NRF2[16:0] NIF[15:0] RRF1[12:0] RRF2[12:0] RIF[12:0] 15 Reserved Note: Registers 9–15 are reserved. Writes to these registers might result in unpredictable behavior. Registers not listed here are reserved and should not be written. Rev. 1.61 21 S i4133 Register 0. Main Configuration Address Field = A[3:0] = 0000 Bit Name D17 D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 LPWR D4 D3 AUTO PDB D2 AUTO KP D1 RF PWR D0 0 0 0 0 AUXSEL [1:0] IFDIV [1:0] 0 0 0 0 0 0 Bit Name Function 17:14 13:12 Reserved AUXSEL[1:0] Program to zero. Auxiliary Output Pin Definition. 00 = Reserved. 01 = Force output low. 10 = Reserved. 11 = Lock Detect—LDETB. IF Output Divider. 00 = IFOUT = IFVCO Frequency 01 = IFOUT = IFVCO Frequency/2 10 = IFOUT = IFVCO Frequency/4 11 = IFOUT = IFVCO Frequency/8 11:10 IFDIV[1:0] 9:6 5 Reserved LPWR Program to zero. Output Power-Level Settings for IF Synthesizer Circuit. 0 = RLOAD 500 —normal power mode. 1 = RLOAD 500 —low power mode. 4 3 Reserved AUTOPDB Program to zero. Auto Powerdown. 0 = Software powerdown is controlled by Register 2. 1 = Equivalent to setting all bits in Register 2 = 1. Auto KP Setting. 0 = KPs are controlled by Register 1. 1 = KPs are set according to Table 9 on page 18. 2 AUTOKP 1 0 RFPWR Reserved Program to zero. (Used for extended frequency operation. See AN41 for more information.) Program to zero. 22 Rev. 1.61 S i4133 Register 1. Phase Detector Gain Address Field (A[3:0]) = 0001 Bit Name Bit D17 D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 0 0 0 0 0 0 0 0 0 0 0 0 KPI[1:0] KP2[1:0] KP1[1:0] Name Function 17:6 5:4 Reserved KPI[1:0] Program to zero. IF Phase Detector Gain Constant.* N Value KPI 8191 = 11 RF2 Phase Detector Gain Constant.* N Value KP2 16383 = 11 RF1 Phase Detector Gain Constant.* N Value KP1 32767 = 11 3:2 KP2[1:0] 1:0 KP1[1:0] *Note: When AUTOKP = 1, these bits do not need to be programmed. When AUTOKP = 0, use these recommended values for programming Phase Detector Gain. Rev. 1.61 23 S i4133 Register 2. Powerdown Address Field (A[3:0]) = 0010 Bit Name Bit D17 D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 0 0 0 0 Name 0 0 0 0 0 0 0 0 0 0 0 0 PDIB PDRB Function 17:2 1 Reserved PDIB Program to zero. Powerdown IF Synthesizer. 0 = IF synthesizer powered down. 1 = IF synthesizer on. Powerdown RF Synthesizer. 0 = RF synthesizer powered down. 1 = RF synthesizer on. 0 PDRB Note: Enabling any PLL with PDIB or PDRB automatically powers on the reference amplifier. Register 3. RF1 N-Divider Address Field (A[3:0]) = 0011 Bit Name Bit Name D17 D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 NRF1[17:0] Function N-Divider for RF1 Synthesizer. 17:0 NRF1[17:0] Register 4. RF2 N-Divider Address Field = A[3:0] = 0100 Bit Name Bit D17 D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 0 Name NRF2[16:0] Function 17 16:0 Reserved NRF2[16:0] Program to zero. N-Divider for RF2 Synthesizer. 24 Rev. 1.61 S i4133 Register 5. IF N-Divider Address Field (A[3:0]) = 0101 Bit Name Bit D17 D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 0 0 Name NIF[15:0] Function 17:16 15:0 Reserved NIF[15:0] Program to zero. N-Divider for IF Synthesizer. Register 6. RF1 R-Divider Address Field (A[3:0]) = 0110 Bit Name D17 D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 0 0 0 Name 0 0 RRF1[12:0] Function 17:13 12:0 Reserved RRF1[12:0] Program to zero. R-Divider for RF1 Synthesizer. RRF1 can be any value from 7 to 8189 if KP1 = 00 8 to 8189 if KP1 = 01 10 to 8189 if KP1 = 10 14 to 8189 if KP1 = 11 Register 7. RF2 R-Divider Address Field (A[3:0]) = 0111 Bit Name Bit D17 D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 0 0 0 Name 0 0 RRF2[12:0] Function 17:13 12:0 Reserved RRF2[12:0] Program to zero. R-Divider for RF2 Synthesizer. RRF2 can be any value from 7 to 8189 if KP2 = 00 8 to 8189 if KP2 = 01 10 to 8189 if KP2 = 10 14 to 8189 if KP2 = 11 Rev. 1.61 25 S i4133 Register 8. IF R-Divider Address Field (A[3:0]) = 1000 Bit Name Bit D17 D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 0 0 0 Name 0 0 RIF[12:0] Function 17:13 12:0 Reserved RIF[12:0] Program to zero. R-Divider for IF Synthesizer. RIF can be any value from 7 to 8189 if KP1 = 00 8 to 8189 if KP1 = 01 10 to 8189 if KP1 = 10 14 to 8189 if KP1 = 11 26 Rev. 1.61 S i4133 5. Pin Descriptions: Si4133-GT SCLK SDATA GNDR RFLD RFLC GNDR RFLB RFLA GNDR GNDR RFOUT VDDR 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 SEN VDDI IFOUT GNDI IFLB IFLA GNDD VDDD GNDD XIN PWDN AUXOUT Pin Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Name SCLK SDATA GNDR RFLD RFLC GNDR RFLB RFLA GNDR GNDR RFOUT VDDR AUXOUT PWDN XIN GNDD VDDD GNDD IFLA IFLB GNDI IFOUT VDDI SEN Description Serial clock input Serial data input Common ground for RF analog circuitry Pins for inductor connection to RF2 VCO Pins for inductor connection to RF2 VCO Common ground for RF analog circuitry Pins for inductor connection to RF1 VCO Pins for inductor connection to RF1 VCO Common ground for RF analog circuitry Common ground for RF analog circuitry Radio frequency (RF) output of the selected RF VCO Supply voltage for the RF analog circuitry Auxiliary output Powerdown input pin Reference frequency amplifier input Common ground for digital circuitry Supply voltage for digital circuitry Common ground for digital circuitry Pins for inductor connection to IF VCO Pins for inductor connection to IF VCO Common ground for IF analog circuitry Intermediate frequency (IF) output of the IF VCO Supply voltage for IF analog circuitry Enable serial port input Rev. 1.61 27 S i4133 Table 13. Pin Descriptions for Si4133 Derivatives—TSSOP Pin Number Si4133 Si4123 Si4122 Si4113 Si4112 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 SCLK SDATA GNDR RFLD RFLC GNDR RFLB RFLA GNDR GNDR RFOUT VDDR AUXOUT PWDN XIN GNDD VDDD GNDD IFLA IFLB GNDI IFOUT VDDI SEN SCLK SDATA GNDR GNDR GNDR GNDR RFLB RFLA GNDR GNDR RFOUT VDDR AUXOUT PWDN XIN GNDD VDDD GNDD IFLA IFLB GNDI IFOUT VDDI SEN SCLK SDATA GNDR RFLD RFLC GNDR GNDR GNDR GNDR GNDR RFOUT VDDR AUXOUT PWDN XIN GNDD VDDD GNDD IFLA IFLB GNDI IFOUT VDDI SEN SCLK SDATA GNDR RFLD RFLC GNDR RFLB RFLA GNDR GNDR RFOUT VDDR AUXOUT PWDN XIN GNDD VDDD GNDD GNDD GNDD GNDD GNDD VDDD SEN SCLK SDATA GNDD GNDD GNDD GNDD GNDD GNDD GNDD GNDD GNDD VDDD AUXOUT PWDN XIN GNDD VDDD GNDD IFLA IFLB GNDI IFOUT VDDI SEN 28 Rev. 1.61 S i4133 6. Pin Descriptions: Si4133-GM SDATA IFOUT GNDR SCLK SEN VDDI GNDI 28 27 26 25 24 23 22 GNDR RFLD RFLC GNDR RFLB RFLA GNDR 1 2 3 4 5 6 7 8 GNDR 21 20 19 GNDI IFLB IFLA GNDD VDDD GNDD XIN GND Pad 18 17 16 15 9 GNDR 10 11 12 13 14 AUXOUT PWDN RFOUT GNDD VDDR Pin Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Name GNDR RFLD RFLC GNDR RFLB RFLA GNDR GNDR GNDR RFOUT VDDR AUXOUT PWDN GNDD XIN GNDD VDDD GNDD IFLA IFLB GNDI GNDI IFOUT VDDI SEN SCLK SDATA GNDR Description Common ground for RF analog circuitry Pins for inductor connection to RF2 VCO Pins for inductor connection to RF2 VCO Common ground for RF analog circuitry Pins for inductor connection to RF1 VCO Pins for inductor connection to RF1 VCO Common ground for RF analog circuitry Common ground for RF analog circuitry Common ground for RF analog circuitry Radio frequency (RF) output of the selected RF VCO Supply voltage for the RF analog circuitry Auxiliary output Powerdown input pin Common ground for digital circuitry Reference frequency amplifier input Common ground for digital circuitry Supply voltage for digital circuitry Common ground for digital circuitry Pins for inductor connection to IF VCO Pins for inductor connection to IF VCO Common ground for IF analog circuitry Common ground for IF analog circuitry Intermediate frequency (IF) output of the IF VCO Supply voltage for IF analog circuitry Enable serial port input Serial clock input Serial data input Common ground for RF analog circuitry Rev. 1.61 29 S i4133 Table 14. Pin Descriptions for Si4133 Derivatives—QFN Pin Number Si4133 Si4123 Si4122 Si4113 Si4112 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 GNDR RFLD RFLC GNDR RFLB RFLA GNDR GNDR GNDR RFOUT VDDR GNDR GNDR GNDR GNDR RFLB RFLA GNDR GNDR GNDR RFOUT VDDR GNDR RFLD RFLC GNDR GNDR GNDR GNDR GNDR GNDR RFOUT VDDR GNDR RFLD RFLC GNDR RFLB RFLA GNDR GNDR GNDR RFOUT VDDR GNDD GNDD GNDD GNDD GNDD GNDD GNDD GNDD GNDD GNDD VDDD AUXOUT AUXOUT AUXOUT AUXOUT AUXOUT PWDN GNDD XIN GNDD VDDD GNDD IFLA IFLB GNDI GNDI IFOUT VDDI SEN SCLK SDATA GNDR PWDN GNDD XIN GNDD VDDD GNDD IFLA IFLB GNDI GNDI IFOUT VDDI SEN SCLK SDATA GNDR PWDN GNDD XIN GNDD VDDD GNDD IFLA IFLB GNDI GNDI IFOUT VDDI SEN SCLK SDATA GNDR PWDN GNDD XIN GNDD VDDD GNDD GNDD GNDD GNDD GNDD GNDD VDDD SEN SCLK SDATA GNDR PWDN GNDD XIN GNDD VDDD GNDD IFLA IFLB GNDI GNDI IFOUT VDDI SEN SCLK SDATA GNDD 30 Rev. 1.61 S i4133 7. Ordering Guide Ordering Part Number Description Operating Temperature Si4133-D-GM Si4133-D-GT Si4123-D-GM Si4123-D-GT Si4122-D-GM Si4122-D-GT Si4113-D-GM Si4113-D-GT Si4113-D-ZT1 Si4112-D-GM Si4112-D-GT RF1/RF2/IF OUT, Lead Free, QFN RF1/RF2/IF OUT, Lead Free, TSSOP RF1/IF OUT, Lead Free, QFN RF1/IF OUT, Lead Free, TSSOP RF2/IF OUT, Lead Free, QFN RF2/IF OUT, Lead Free, TSSOP RF1/RF2 OUT, Lead Free, QFN RF1/RF2 OUT, Lead Free, TSSOP RF1/RF2 OUT, NiPd, TSSOP IF OUT, Lead Free, QFN IF OUT, Lead Free, TSSOP –40 to 85 ºC –40 to 85 ºC –40 to 85 ºC –40 to 85 ºC –40 to 85 ºC –40 to 85 ºC –40 to 85 ºC –40 to 85 ºC –40 to 85 ºC –40 to 85 ºC –40 to 85 ºC 8. Si4133 Derivative Devices The Si4133 performs both IF and dual-band RF frequency synthesis. The Si4112, Si4113, Si4122, and the Si4123 are derivatives of this device. Table 15 outlines which synthesizers each derivative device features and the pins and registers that coincide with each synthesizer. Table 15. Si4133 Derivatives Name Synthesizer Pins Registers Si4112 Si4113 Si4122 Si4123 Si4133 IF RF1, RF2 RF2, IF RF1, IF RF1, RF2, IF IFLA, IFLB RFLA, RFLB, RFLC, RFLD RFLC, RFLD, IFLA, IFLB RFLA, RFLB, IFLA, IFLB RFLA, RFLB, RFLC, RFLD, IFLA, IFLB NIF, RIF, PDIB, IFDIV, LPWR, AUTOPDB = 0, PDRB = 0 NRF1, NRF2, RRF1, RRF2, PDRB, AUTOPDB = 0, PDIB = 0 NRF2, RRF2, PDRB, NIF, RIF, PDIB, IFDIV, LPWR NRF1, RRF1, PDRB, NIF, RIF, PDIB, IFDIV, LPWR NRF1, NRF2, RRF1, RRF2, PDRB, NIF, RIF, PDIB, IFDIV, LPWR Rev. 1.61 31 S i4133 9. Package Outline: Si4133-GT Figure 19 illustrates the package details for the Si4133-GT. Table 16 lists the values for the dimensions shown in the illustration. 24 B E1 E 1 ddd C B A L 1 2 3 e A Detail G D c A b bbb M C B A C A1 See Detail G Figure 19. 24-Pin Thin Shrink Small Outline Package (TSSOP) Table 16. Package Diagram Dimensions Symbol Millimeters Min — 0.05 0.19 0.09 7.70 Nom — — — — 7.80 0.65 BSC 6.40 BSC 4.40 0.60 — 0.10 0.20 Max 1.20 0.15 0.30 0.20 7.90 A A1 b c D e E E1 L 1 bbb ddd 4.30 0.45 0° 4.50 0.75 8° 32 Rev. 1.61 S i4133 10. Package Outline: Si4133-GM Figure 20 illustrates the package details for the Si4133-GM. Table 17 lists the values for the dimensions shown in the illustration. Figure 20. 28-Pin Quad Flat No-Lead (QFN) Table 17. Package Dimensions Symbol Min Millimeters Nom Max Symbol Min Millimeters Nom Max A A1 b D, E e D2, E2 0.80 0.00 0.18 0.85 0.01 0.23 5.00 BSC 0.50 BSC 0.90 0.05 0.30 L aaa bbb ccc ddd 0.50 — — — — — 0.60 — — — — — 0.70 0.10 0.10 0.05 0.10 12 2.55 2.70 2.85  Notes: 1. Dimensioning and tolerancing per ANSI Y14.5M-1994. 2. This package outline conforms to JEDEC MS-220, variant VHHD-1. 3. Recommended card reflow profile is per the JEDEC/IPC J-STD-020B specification for Small Body Components. Rev. 1.61 33 S i4133 DOCUMENT CHANGE LIST Revision 1.4 to Revision 1.5   "7.Ordering Guide" on page 31 updated. Changed MLP to QFN (same package, generic name) Revision 1.5 to Revision 1.6  Updated "7.Ordering Guide" on page 31. Revision 1.6 to Revision 1.61  Updated contact information. 34 Rev. 1.61 S i4133 NOTES: Rev. 1.61 35 S i4133 CONTACT INFORMATION Silicon Laboratories Inc. 400 West Cesar Chavez Austin, TX 78701 Tel: 1+(512) 416-8500 Fax: 1+(512) 416-9669 Toll Free: 1+(877) 444-3032 Please visit the Silicon Labs Technical Support web page: https://www.silabs.com/support/pages/contacttechnicalsupport.aspx and register to submit a technical support request. The information in this document is believed to be accurate in all respects at the time of publication but is subject to change without notice. Silicon Laboratories assumes no responsibility for errors and omissions, and disclaims responsibility for any consequences resulting from the use of information included herein. Additionally, Silicon Laboratories assumes no responsibility for the functioning of undescribed features or parameters. Silicon Laboratories reserves the right to make changes without further notice. Silicon Laboratories makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Silicon Laboratories assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. Silicon Laboratories products are not designed, intended, or authorized for use in applications intended to support or sustain life, or for any other application in which the failure of the Silicon Laboratories product could create a situation where personal injury or death may occur. Should Buyer purchase or use Silicon Laboratories products for any such unintended or unauthorized application, Buyer shall indemnify and hold Silicon Laboratories harmless against all claims and damages. Silicon Laboratories and Silicon Labs are trademarks of Silicon Laboratories Inc. Other products or brandnames mentioned herein are trademarks or registered trademarks of their respective holders. 36 Rev. 1.61