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ADS8331IPWR

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Texas Instruments Analog To Digital Converters (ADC), TSSOP-24. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Contents

README

markdown

ADS8331IPWR

Texas Instruments · Analog To Digital Converters (ADC) · TSSOP-24

ADS8331IPWR from Texas Instruments, in a TSSOP-24. 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 IN1 input Analog multiplexer input channel 1, part of the on-chip 4-to-1 mux for the ADS8331.
2 IN2 input Analog multiplexer input channel 2, part of the on-chip 4-to-1 mux for the ADS8331.
3 IN3 input Analog multiplexer input channel 3, part of the on-chip 4-to-1 mux for the ADS8331.
4 NC unconnected No internal connection (ADS8331 only); labeled IN4/NC on the package.
5 NC unconnected No internal connection (ADS8331 only); labeled IN5/NC on the package.
6 NC unconnected No internal connection (ADS8331 only); labeled IN6/NC on the package.
7 NC unconnected No internal connection (ADS8331 only); labeled IN7/NC on the package.
8 RESET input External reset input, active low, used to force the device into its default configuration.
9 EOC/INT/CDI bidirectional Programmable status output (end-of-conversion, low during conversion by default, or interrupt, low after end of conversion until FS/CS goes low) that can also be reconfigured as a chain-data input (CDI) for daisy-chain mode.
10 SCLK input SPI serial clock input for the digital interface, usable up to 40 MHz at VA = VBD = 5 V.
11 FS/CS input Frame sync input for DSP interfacing or chip-select input for SPI operation.
12 SDI input SPI serial data input, sampled on the falling edge of SCLK.
13 SDO output SPI serial data output, presenting the MSB-first conversion result on the falling edge of FS/CS and updating on the falling edge of SCLK.
14 DGND power_in Digital interface ground reference for the VBD supply domain.
15 CONVST input Conversion start input; a low pulse of at least 40 ns freezes the sample-and-hold and starts a conversion, independent of FS/CS.
16 VBD power_in Digital interface supply, 1.65 V to VA, powering the SPI I/O buffers.
17 VA power_in Analog supply voltage, 2.7 V to 5.5 V, powering the analog core of the converter.
18 REF+ input External voltage reference input, accepting 1.2 V to VA (2.525 V max typical at VA=2.7V, 4.2 V max at VA=5V), decoupled with a 10-22 uF ceramic capacitor.
19 REF- power_in External reference ground return; must be connected to the analog ground plane through a separate via and not tied directly to the AGND pin.
20 AGND power_in Analog ground reference for the VA supply domain.
21 ADCIN input ADC sampling input fed from MUXOUT (directly or through external signal conditioning) into the SAR converter's sample-and-hold.
22 MUXOUT output Output of the internal analog input multiplexer, intended to be connected (directly or through signal conditioning) to ADCIN.
23 COM input Common ADC input, usually connected to AGND, limited to AGND -0.2 V to AGND +0.2 V, against which the selected INx channel is measured.
24 IN0 input Analog multiplexer input channel 0, part of the on-chip 4-to-1 mux for the ADS8331.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package TSSOP-24
Category Data Acquisition
Pins 24

CAD (KiCad official)

  • Symbol: ADS8331IPWR
  • Footprint: Package_SO:TSSOP-24_4.4x7.8mm_P0.65mm
  • 3D model: TSSOP-24 (KiCad packages3D, STEP)
  • 3D model files: ads8331ipwr-etched.step / ads8331ipwr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ads8331ipwr.step / ads8331ipwr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (62 pp, sha256 6d4028ed191231f0, retrieved 2026-09-23, tier: lcsc)
  • 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