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ADS8331IBPWR

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

ADS8331IBPWR from Texas Instruments, in a TSSOP-24. 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	IN1	input	Mux input channel 1; absolute maximum -0.3 V to VA + 0.3 V relative to AGND.
2	IN2	input	Mux input channel 2; absolute maximum -0.3 V to VA + 0.3 V relative to AGND.
3	IN3	input	Mux input channel 3; absolute maximum -0.3 V to VA + 0.3 V relative to AGND.
4	NC	unconnected	No internal connection (ADS8331 only).
5	NC	unconnected	No internal connection (ADS8331 only).
6	NC	unconnected	No internal connection (ADS8331 only).
7	NC	unconnected	No internal connection (ADS8331 only).
8	RESET	input	External reset, active low.
9	EOC/INT/CDI	bidirectional	Programmable status output (EOC low during conversion by default, or INT low after end of conversion and high after FS/CS goes low, with programmable polarity), also usable as chain data input (CDI) in daisy-chain mode.
10	SCLK	input	SPI clock for the serial interface, up to 40 MHz at VA = VBD = 5 V.
11	FS/CS	input	Frame sync signal for a DSP (such as TMS320 DSP) or chip select input for SPI.
12	SDI	input	SPI serial data input.
13	SDO	output	SPI serial data output.
14	DGND	power_in	Digital interface ground.
15	CONVST	input	Conversion start input that freezes the sample and hold and starts conversion.
16	VBD	power_in	Digital interface supply, 1.65 V to VA + 0.2 V recommended.
17	VA	power_in	Analog supply, 2.7 V to 5.5 V.
18	REF+	input	External reference input; absolute maximum -0.3 V to VA + 0.3 V relative to AGND.
19	REF-	power_in	External reference ground, to be connected to AGND through an individual via on the printed-circuit board.
20	AGND	power_in	Analog ground.
21	ADCIN	input	ADC input; absolute maximum -0.3 V to VA + 0.3 V relative to AGND.
22	MUXOUT	output	Mux output.
23	COM	input	Common ADC input, usually connected to AGND.
24	IN0	input	Mux input channel 0; absolute maximum -0.3 V to VA + 0.3 V relative to AGND.

Key specifications

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

CAD (KiCad official)

Symbol: ADS8331IBPWR
Footprint: Package_SO:TSSOP-24_4.4x7.8mm_P0.65mm
3D model: TSSOP-24 (KiCad packages3D, STEP)
3D model files: ads8331ibpwr-etched.step / ads8331ibpwr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ads8331ibpwr.step / ads8331ibpwr.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 2026-10-07, tier: lcsc)
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