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TDA7703TR

Public Made by Adom

by adom

STMicroelectronics RF Transceiver ICs, TQFP-44(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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TDA7703TR

STMicroelectronics · RF Transceiver ICs · TQFP-44(10x10)

TDA7703TR from STMicroelectronics, in a TQFP-44(10x10). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 LF1 passive PLL loopfilter output.
2 TCAGCFM passive FM AGC time constant, set by an external capacitor.
3 FMMIXDEC passive FM mixer decoupling.
4 FMMIXIN input FM mixer input (written FMIXIN in Table 2, FMMIXIN in Figure 2).
5 GND-RF power_in RF ground.
6 FMPINDRV output FM AGC PIN diode driver, able to drive external PIN diodes with current as high as 15 mA.
7 VCC-RF power_in 5 V supply for RF section.
8 TCAM passive AM AGC time constant, set by an external capacitor.
9 PINDDEC passive AM AGC internal PIN diode decoupling.
10 PINDIN input AM AGC internal PIN diode input.
11 GND-LNA power_in Ground of AM LNA, AM internal PIN diode, AM mixer and IF.
12 LNAIN input AM LNA input.
13 LNADEC passive AM LNA decoupling.
14 LNAOUT output AM LNA output of first stage.
15 LNAIN2 input AM LNA input of 2nd stage.
16 LNAOUT2 output AM LNA output.
17 LNADEC2 passive AM LNA decoupling for 2nd stage.
18 AMMIXIN input AM mixer input.
19 VREF165 passive 1.65 V reference voltage decoupling.
20 VREFDEC passive 3.3 V reference voltage decoupling.
21 GND-DIG power_in Digital ground.
22 VCC-DIG power_in 5 V supply for digital logic.
23 VCCREG1V2 power_in VCC of the 1.2 V regulator.
24 REG1V2 power_out 1.2 V regulator output.
25 VDD-3V3 power_out 3.3 V VDD output / decoupling.
26 SDA bidirectional I2C bus data.
27 SCL input I2C bus clock.
28 VDD-1V2 power_in 1.2 V DSP supply.
29 BUSSET input Bus communication setup.
30 RSTN input Reset pin, active low.
31 VDD-1V2 power_in 1.2 V DSP supply.
32 GND-1V2 power_in Digital ground for 1.2 V VDD.
33 VCC-DAC power_in 5 V supply of audio DAC.
34 OSCOUT output Crystal oscillator output (37.05 MHz fundamental or 3rd overtone crystal).
35 OSCIN input Crystal oscillator input (37.05 MHz fundamental or 3rd overtone crystal).
36 GND-DAC power_in Audio DAC ground.
37 DACOUTL output Audio output left.
38 DACOUTR output Audio output right.
39 GND-IFADC power_in IF ADC ground.
40 VCC-IFADC power_in 5 V supply of IF ADC.
41 VCC-PLL power_in 5 V supply of PLL.
42 GND-PLL power_in PLL ground.
43 VCC-VCO power_in 5 V supply of VCO.
44 GND-VCO power_in VCO ground.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package TQFP-44(10x10)
Category RF And Wireless
Pins 44

CAD (KiCad official)

  • Symbol: TDA7703TR
  • Footprint: Package_QFP:TQFP-44_10x10mm_P0.8mm
  • 3D model: TQFP-44(10x10) (KiCad packages3D, STEP)
  • 3D model files: tda7703tr-etched.step / tda7703tr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tda7703tr.step / tda7703tr.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: STMicroelectronics datasheet (32 pp, sha256 8134561c67c11cdf, retrieved 2026-10-07, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF