5 Pin Configuration and Functi…
Texas InstrumentsUnited States
IC RF SYNTHESIZER 10MHZ-20GHZ 40-VQFN
LMX2595RHA is a 10MHz to 20GHz wideband PLL RF synthesizer in a 40-pin VQFN package, powered by a single 3.3V supply, supporting JESD204B and phase synchronization.Checked against the datasheet
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Technical parameters
Key specs
Max frequency20 GHzMax
Outputs2
Supply voltage3.15 ~ 3.45 V
Datasheet-verified parameters
19 items| Parameter | Value and test conditions | Source |
|---|---|---|
| Maximum Output Frequency | 20 GHz | |
| Number of Outputs | 2 (Differential Output A and B) | |
| Supply Voltage | 3.15 V to 3.45 V (Typ 3.3 V) | |
| Package | VQFN (40), 6.00mm × 6.00mm | |
| Operating Temperature | -40°C to 85°C | |
| RoHS | Yes |
Pinout and package
5 Pin Configuration and Functi…
| Pin | Name | Function | Source |
|---|---|---|---|
| 1 | CE, Chip enable input, Active HIGH | ||
| 3 | VbiasVCO, VCO bias, requires 10-μF capacitor to VCO ground | ||
| 5 | SYNC, Phase synchronization pin, programmable threshold | ||
| 7 | VccDIG, Digital supply, bypass to digital ground recommended | ||
| 8 | OSCinP, Reference input clock (+), high-impedance self-biasing, AC-coupling capacitor required | ||
| 9 | OSCinM, Reference input clock (-), high-impedance self-biasing, AC-coupling capacitor required | ||
| 10 | VregIN, Input reference path regulator output, requires 1-μF capacitor to ground | ||
| 11 | VccCP, Charge pump supply, bypass to charge pump ground recommended | ||
| 12 | CPout, Charge pump output, connect loop filter C1 recommended | ||
| 13 | GND, Charge pump ground | ||
| 15 | VccMASH, Digital supply, bypass to digital ground recommended | ||
| 16 | SCK, SPI clock, high impedance CMOS input, 1.8-V to 3.3-V logic | ||
| 17 | SDI, SPI data, high impedance CMOS input, 1.8-V to 3.3-V logic | ||
| 18 | RFoutBM, Differential output B (-), 50-Ω pullup to Vcc required, can be used as SYSREF output | ||
| 19 | RFoutBP, Differential output B (+), 50-Ω pullup to Vcc required, can be used as SYSREF output | ||
| 20 | MUXout, Multiplexed output pin — lock detect, readback, diagnostics, ramp status | ||
| 21 | VccBUF, Output buffer supply, bypass to RFout ground recommended | ||
| 22 | RFoutAM, Differential output A (-), 50-Ω pullup to Vcc required | ||
| 23 | RFoutAP, Differential output A (+), 50-Ω pullup to Vcc required | ||
| 24 | CSB, SPI latch, Chip Select Bar, high-impedance CMOS input, 1.8-V to 3.3-V logic | ||
| 26 | VccVCO2, VCO supply, bypass to VCO ground recommended | ||
| 27 | VbiasVCO2, VCO bias, requires 1-μF capacitor to VCO ground | ||
| 28 | SysRefReq, SYSREF request input for JESD204B support | ||
| 29 | VrefVCO2, VCO supply reference, requires 10-μF capacitor to VCO ground | ||
| 30 | RampClk, Input pin for ramping mode, can be used to clock the ramp in manual ramping mode or as a trigger input | ||
| 32 | RampDir, Input pin for ramping mode, can be used to change ramp direction in manual ramping mode or as a trigger input | ||
| 33 | VbiasVARAC, VCO Varactor bias, requires 10-μF capacitor to VCO ground | ||
| 35 | Vtune, VCO tuning voltage input | ||
| 36 | VrefVCO, VCO supply reference, requires 10-μF capacitor to VCO ground | ||
| 37 | VccVCO, VCO supply, bypass to ground recommended | ||
| 38 | VregVCO, VCO regulator node, requires 1-μF capacitor to ground | ||
| 2, 4, 25, 31, 34, 39 | GND, VCO ground | ||
| 6, 14 | GND, Digital ground | ||
| DAP | GND, Die Attached Pad, used for RFout ground |
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