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ADS1235IRHBR

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Texas Instruments Analog To Digital Converters (ADC), VQFN-32-EP(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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ADS1235IRHBR

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

ADS1235IRHBR from Texas Instruments, in a VQFN-32-EP(5x5). Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 NC unconnected No connection; float or connect to AVSS.
2 CAPP output PGA positive output; connect a 4.7-nF C0G capacitor across CAPP and CAPN.
3 CAPN output PGA negative output; connect a 4.7-nF C0G capacitor across CAPP and CAPN.
4 AVDD power_in Analog power supply positive; 4.75 V to 5.25 V.
5 AVSS power_in Analog power supply negative; -2.6 V to 0 V relative to DGND.
6 NC unconnected No connection; solder for mechanical support or connect to DGND.
7 PWDN input Power down control; active low input.
8 RESET input Reset control; active low input.
9 START input Start conversion control; active high input.
10 CS input Serial interface chip select; active low input.
11 SCLK input Serial interface shift clock input.
12 DIN input Serial interface data input.
13 DRDY output Data ready indicator; active low output.
14 DOUT/DRDY tri_state Dual-function output; serial data output when CS is low, high-impedance when CS is high.
15 BYPASS power_out Internal regulator bypass output; connect a 1-µF capacitor to DGND.
16 DGND power_in Digital ground.
17 DVDD power_in Digital power supply; 2.7 V to 5.25 V.
18 CLKIN input Clock input; connect to DGND for internal oscillator or external clock source (1 to 8 MHz).
19 NC unconnected No connection; solder for mechanical support or connect to DGND.
20 NC unconnected No connection; solder for mechanical support or connect to DGND.
21 NC unconnected No connection; solder for mechanical support or connect to DGND.
22 NC unconnected No connection; solder for mechanical support or connect to DGND.
23 NC unconnected No connection; solder for mechanical support or connect to DGND.
24 NC unconnected No connection; solder for mechanical support or connect to DGND.
25 AIN5 input Analog input 5; differential input range ±VREF/Gain.
26 AIN4 input Analog input 4; differential input range ±VREF/Gain.
27 AIN3 bidirectional Analog input 3; GPIO3, ACX2 output; multiplexed analog input, digital output, and AC excitation signal.
28 AIN2 bidirectional Analog input 2; GPIO2, ACX1 output; multiplexed analog input, digital output, and AC excitation signal.
29 AIN1 bidirectional Analog input 1; GPIO1, ACX2 output; reference input 1 negative; multiplexed functions.
30 AIN0 bidirectional Analog input 0; GPIO0, ACX1 output; reference input 1 positive; multiplexed functions.
31 REFN0 bidirectional Reference input 0 negative; differential reference voltage minimum 0.9 V.
32 REFP0 bidirectional Reference input 0 positive; differential reference voltage minimum 0.9 V.
33 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package VQFN-32-EP(5x5)
Category Data Acquisition
Pins 33

CAD (KiCad official)

  • Symbol: ADS1235IRHBR
  • Footprint: Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.3x3.3mm
  • 3D model: VQFN-32-EP(5x5) (KiCad packages3D, STEP)
  • 3D model files: ads1235irhbr-etched.step / ads1235irhbr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ads1235irhbr.step / ads1235irhbr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (77 pp, sha256 1ce4c74bb36cf409, retrieved 2026-09-23, 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 0.2, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-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