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ADS131A02IPBS

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Texas Instruments Analog To Digital Converters (ADC), TQFP-32(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

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PCB Footprint

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Datasheet

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Contents

README

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ADS131A02IPBS

Texas Instruments · Analog To Digital Converters (ADC) · TQFP-32(5x5)

ADS131A02IPBS from Texas Instruments, in a TQFP-32(5x5). 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 AIN1N input Negative differential analog input for channel 1.
2 AIN1P input Positive differential analog input for channel 1.
3 AIN2N input Negative differential analog input for channel 2.
4 AIN2P input Positive differential analog input for channel 2.
5 NC unconnected No connection; leave floating or connect directly to AVSS.
6 NC unconnected No connection; leave floating or connect directly to AVSS.
7 NC unconnected No connection; leave floating or connect directly to AVSS.
8 NC unconnected No connection; leave floating or connect directly to AVSS.
9 AVDD power_in Positive analog power supply requiring 1-µF bypass capacitor to AVSS.
10 AVSS power_in Negative analog power supply.
11 VNCP output Negative charge pump voltage output; connect 270-nF capacitor to AVSS when enabled or directly to AVSS when disabled.
12 REFP output Positive reference voltage output requiring 1-µF bypass capacitor to REFN.
13 REFN input Negative reference voltage input; connect to AVSS.
14 REFEXT input Buffered external reference voltage input requiring 1-µF bypass capacitor to AVSS when using internal reference.
15 IOVDD power_in Digital I/O supply voltage requiring 1-µF bypass capacitor to GND.
16 RESV input Reserved pin; connect to IOVDD.
17 RESET input Active-low system reset input.
18 DONE output Active-low communication done signal output.
19 DRDY bidirectional Active-low data ready output providing host interrupt and multi-device synchronization.
20 DIN input Serial data input.
21 DOUT output Serial data output requiring 100-kΩ pullup resistor to IOVDD.
22 SCLK bidirectional Serial data clock.
23 CS input Active-low chip select input.
24 NC unconnected No connection.
25 XTAL1/CLKIN input Master clock input or crystal oscillator buffer input.
26 XTAL2 output Crystal oscillator output; leave unconnected if oscillator is unused.
27 GND power_in Digital ground.
28 CAP output Digital LDO regulator output requiring 1-µF bypass capacitor to GND.
29 IOVDD power_in Digital I/O supply voltage requiring 1-µF bypass capacitor to GND.
30 M0 input SPI configuration mode; tie to IOVDD for asynchronous interrupt mode, GND for synchronous master mode, or leave floating for synchronous slave mode.
31 M1 input SPI word transfer size; tie to IOVDD for 32-bit, GND for 24-bit, or leave floating for 16-bit mode.
32 M2 input Hamming code enable; tie to IOVDD to enable validation, GND to disable, or leave floating as reserved.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package TQFP-32(5x5)
Category Data Acquisition
Pins 32

CAD (KiCad official)

  • Symbol: ADS131A02IPBS
  • Footprint: Package_QFP:TQFP-32_5x5mm_P0.5mm
  • 3D model: TQFP-32(5x5), generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 1.1 mm nominal TQFP height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
  • 3D model files: ads131a02ipbs-etched.step / ads131a02ipbs-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ads131a02ipbs.step / ads131a02ipbs.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (92 pp, sha256 a195fbfd42808a88, retrieved 2026-10-06, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-4-5-20251001 (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