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ADS1261IRHBR

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Texas Instruments Global Sourcing Parts, 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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Datasheet

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Contents

README

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ADS1261IRHBR

Texas Instruments · Global Sourcing Parts · VQFN-32-EP(5x5)

ADS1261IRHBR 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 AINCOM bidirectional Analog input common, multiplexed with IDAC1, IDAC2 excitation current outputs and VBIAS level-shift voltage.
2 CAPP output PGA output positive; connect 4.7-nF C0G capacitor across CAPP and CAPN for antialias filtering.
3 CAPN output PGA output negative; connect 4.7-nF C0G capacitor across CAPP and CAPN for antialias filtering.
4 AVDD power_in Positive analog power supply, recommended 4.75 V to 5.25 V.
5 AVSS power_in Negative analog power supply / analog ground reference.
6 REFOUT power_out Internal 2.5-V reference voltage output; connect 10-µF capacitor to AVSS.
7 PWDN input Power down control input, active low.
8 RESET input Reset control input, active low.
9 START input Start conversion control input, active high.
10 CS input Serial interface chip select, active low; can be tied low to reduce to 3-wire interface.
11 SCLK input Serial interface shift clock input with Schmidt-triggered noise immunity.
12 DIN input Serial interface data input, latched on SCLK falling edge.
13 DRDY output Data ready indicator output, active low; asserts low when conversion data ready.
14 DOUT/DRDY tri_state Dual function serial interface data output and data ready indicator, tri-state when CS high.
15 BYPASS power_out Internal subregulator bypass output voltage; connect 1-µF capacitor to DGND.
16 DGND power_in Digital ground reference.
17 DVDD power_in Digital power supply, 2.7 V to 5.25 V.
18 CLKIN input Clock input for external clock or tied to DGND for internal oscillator operation.
19 NC unconnected No connection; electrically float or connect to DGND.
20 NC unconnected No connection; electrically float or connect to DGND.
21 NC unconnected No connection; electrically float or connect to DGND.
22 NC unconnected No connection; electrically float or connect to DGND.
23 AIN9 bidirectional Analog input 9, multiplexed with IDAC1, IDAC2 excitation current outputs.
24 AIN8 bidirectional Analog input 8, multiplexed with IDAC1, IDAC2 excitation current outputs.
25 AIN7 bidirectional Analog input 7, multiplexed with IDAC1, IDAC2 excitation current outputs.
26 AIN6 bidirectional Analog input 6, multiplexed with IDAC1, IDAC2 excitation current outputs.
27 AIN5 bidirectional Analog input 5, multiplexed with IDAC1, IDAC2, GPIO3, and ACX2 AC-excitation outputs.
28 AIN4 bidirectional Analog input 4, multiplexed with IDAC1, IDAC2, GPIO2, and ACX1 AC-excitation outputs.
29 AIN3 bidirectional Analog input 3, multiplexed with IDAC1, IDAC2, REFN1, GPIO1, and ACX2 AC-excitation outputs.
30 AIN2 bidirectional Analog input 2, multiplexed with IDAC1, IDAC2, REFP1, GPIO0, and ACX1 AC-excitation outputs.
31 AIN1 bidirectional Analog input 1, multiplexed with IDAC1, IDAC2, and REFN0 negative reference voltage inputs.
32 AIN0 bidirectional Analog input 0, multiplexed with IDAC1, IDAC2, and REFP0 positive reference voltage inputs.
33 Pad passive Exposed thermal pad for heat dissipation; must be soldered to AVSS for mechanical integrity.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package VQFN-32-EP(5x5)
Category Global Sourcing Parts
Pins 33

CAD (KiCad official)

  • Symbol: ADS1261IRHBR
  • 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: ads1261irhbr-etched.step / ads1261irhbr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ads1261irhbr.step / ads1261irhbr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (92 pp, sha256 0369aa88e789386f, retrieved 2026-09-24, 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