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ADS9234RIRHBR

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

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ADS9234RIRHBR

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

ADS9234RIRHBR from Texas Instruments, in a VQFN-32-EP(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 AINP_A input Positive analog input for channel A; absolute limits are -0.3 V to AVDD + 0.3 V to GND.
2 AINM_A input Negative analog input for channel A; absolute limits are -0.3 V to AVDD + 0.3 V to GND.
3 REFby2 output REFby2 buffer output, used to set the common-mode voltage; connect a 1-µF decoupling capacitor between pin 3 and pin 4.
4 GND power_in Ground.
5 REFOUT output Internal reference output; connect a 1-µF decoupling capacitor between pin 5 and pin 4.
6 NC unconnected No external connection.
7 AINM_B input Negative analog input for channel B; absolute limits are -0.3 V to AVDD + 0.3 V to GND.
8 AINP_B input Positive analog input for channel B; absolute limits are -0.3 V to AVDD + 0.3 V to GND.
9 REFM_B output Negative output of reference buffer B and negative reference input for ADC_B; externally connect to the device GND.
10 REFP_B output Positive output of reference buffer B and positive reference input for ADC_B; the text calls for a 10-µF decoupling capacitor here but cites pins 9 and 10 for it.
11 GND power_in Ground.
12 AVDD power_in Analog power supply (4.5 V to 5.5 V, 5 V nominal); connect a 1-µF decoupling capacitor between pin 12 and pin 11.
13 CONVST input Conversion start input; a CONVST rising edge starts the conversion for ADC_A and ADC_B.
14 CS input Active-low chip-select input; host and device communicate when CS is low, and the SDO-x pins go to Hi-Z when CS is high.
15 SDI input Serial data input used to program the device registers.
16 SCLK input Clock input for the serial interface.
17 SDO-7/3B tri_state SPI mode: data output 3 for channel B; parallel byte mode: MSB of the data byte; Hi-Z when CS is high.
18 SDO-6/2B tri_state SPI mode: data output 2 for channel B; parallel byte mode: LSB+6 of the data byte; Hi-Z when CS is high.
19 SDO-5/1B tri_state SPI mode: data output 1 for channel B; parallel byte mode: LSB+5 of the data byte; Hi-Z when CS is high.
20 SDO-4/0B tri_state SPI mode: data output 0 for channel B; parallel byte mode: LSB+4 of the data byte; Hi-Z when CS is high.
21 SDO-3/3A tri_state SPI mode: data output 3 for channel A; parallel byte mode: LSB+3 of the data byte; Hi-Z when CS is high.
22 SDO-2/2A tri_state SPI mode: data output 2 for channel A; parallel byte mode: LSB+2 of the data byte; Hi-Z when CS is high.
23 SDO-1/1A tri_state SPI mode: data output 1 for channel A; parallel byte mode: LSB+1 of the data byte; Hi-Z when CS is high.
24 SDO-0/0A tri_state SPI mode: data output 0 for channel A; parallel byte mode: LSB of the data byte; Hi-Z when CS is high.
25 READY/STROBE output Indicates data ready or provides a strobe output for data capture.
26 PD/RST input Asynchronous reset or power-down input; see the Reset or Power-Down section of the datasheet.
27 GND power_in Ground.
28 DVDD power_in Interface power supply; 1.65 V to 5.5 V, or 2.35 V minimum when SCLK exceeds 20 MHz. Connect a 1-µF decoupling capacitor between pin 27 and pin 28.
29 AVDD power_in Analog power supply (4.5 V to 5.5 V, 5 V nominal); connect a 1-µF decoupling capacitor between pin 29 and pin 30.
30 GND power_in Ground.
31 REFP_A output Positive output of reference buffer A and positive reference input for ADC_A; connect a 10-µF decoupling capacitor between pin 31 and pin 32.
32 REFM_A output Negative output of reference buffer A and negative reference input for ADC_A; externally connect to the device GND.
33 Thermal pad 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 ADC/DAC/Data Conversion
Pins 33

CAD (KiCad official)

  • Symbol: ADS9234RIRHBR
  • 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: ads9234rirhbr-etched.step / ads9234rirhbr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ads9234rirhbr.step / ads9234rirhbr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (66 pp, sha256 e8405ba4f4929a21, retrieved 2026-10-08, 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-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