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Contents

Pinout
Key specifications
CAD (KiCad official)
Provenance

README

markdown

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