component
ADS8331IRGER
Public Made by Adomby adom
Texas Instruments Analog To Digital Converters (ADC), VQFN-24-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownADS8331IRGER
Texas Instruments · Analog To Digital Converters (ADC) · VQFN-24-EP(4x4)
ADS8331IRGER from Texas Instruments, in a VQFN-24-EP(4x4). 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 | NC | unconnected | No internal connection on the ADS8331 (this pin is IN4 on the ADS8332); leave it unconnected. |
| 2 | NC | unconnected | No internal connection on the ADS8331 (this pin is IN5 on the ADS8332); leave it unconnected. |
| 3 | NC | unconnected | No internal connection on the ADS8331 (this pin is IN6 on the ADS8332); leave it unconnected. |
| 4 | NC | unconnected | No internal connection on the ADS8331 (this pin is IN7 on the ADS8332); leave it unconnected. |
| 5 | RESET | input | External reset input, active low. |
| 6 | EOC/INT/CDI | output | Programmable status output: end-of-conversion (low during conversion by default) or interrupt (low after conversion, returns high after FS/CS goes low), with programmable polarity; it can also serve as chain data input (CDI) in daisy-chain mode. |
| 7 | SCLK | input | SPI clock input for the serial interface. |
| 8 | FS/CS | input | Frame sync input for DSP operation or chip select input for SPI. |
| 9 | SDI | input | SPI serial data input. |
| 10 | SDO | output | SPI serial data output. |
| 11 | DGND | power_in | Digital interface ground. |
| 12 | CONVST | input | Conversion start input; freezes the sample-and-hold and starts a conversion. Global CONVST is independent of CS. |
| 13 | VBD | power_in | Digital interface supply; recommended operating range is 1.65 V to VA + 0.2 V. |
| 14 | VA | power_in | Analog supply, 2.7 V to 5.5 V. |
| 15 | REF+ | input | External reference input. |
| 16 | REF- | power_in | External reference ground; connect to AGND through an individual via on the printed-circuit board. |
| 17 | AGND | power_in | Analog ground. |
| 18 | ADCIN | input | ADC input; absolute maximum voltage to AGND is -0.3 V to VA + 0.3 V. |
| 19 | MUXOUT | output | Multiplexer output. |
| 20 | COM | input | Common ADC input, usually connected to AGND; absolute maximum voltage to AGND is -0.3 V to 0.3 V. |
| 21 | IN0 | input | Multiplexer analog input 0; absolute maximum voltage to AGND is -0.3 V to VA + 0.3 V. |
| 22 | IN1 | input | Multiplexer analog input 1; absolute maximum voltage to AGND is -0.3 V to VA + 0.3 V. |
| 23 | IN2 | input | Multiplexer analog input 2; absolute maximum voltage to AGND is -0.3 V to VA + 0.3 V. |
| 24 | IN3 | input | Multiplexer analog input 3; absolute maximum voltage to AGND is -0.3 V to VA + 0.3 V. |
| 25 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VQFN-24-EP(4x4) |
| Category | Data Acquisition |
| Pins | 25 |
CAD (KiCad official)
- Symbol:
ADS8331IRGER - Footprint:
Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.7x2.7mm - 3D model: VQFN-24-EP(4x4) (KiCad packages3D, STEP)
- 3D model files:
ads8331irger-etched.step/ads8331irger-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ads8331irger.step/ads8331irger.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (62 pp, sha256
6d4028ed191231f0, retrieved 2026-10-08, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).