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ADS131M08IRSNR
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Texas Instruments Analog To Digital Converters (ADC), QFN-32(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+70@@ -0,0 +1,70 @@+# ADS131M08IRSNR++**Texas Instruments** · Analog To Digital Converters (ADC) · QFN-32(4x4)++ADS131M08IRSNR from Texas Instruments, in a QFN-32(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 | AIN2P | input | Positive differential analog input 2; input voltage range AGND - 1.3V to AVDD when gain is 1-4, or AGND - 1.3V to AVDD - 1.8V when gain is 8-128. |+| 2 | AIN2N | input | Negative differential analog input 2; input voltage range AGND - 1.3V to AVDD when gain is 1-4, or AGND - 1.3V to AVDD - 1.8V when gain is 8-128. |+| 3 | AIN3N | input | Negative differential analog input 3; input voltage range AGND - 1.3V to AVDD when gain is 1-4, or AGND - 1.3V to AVDD - 1.8V when gain is 8-128. |+| 4 | AIN3P | input | Positive differential analog input 3; input voltage range AGND - 1.3V to AVDD when gain is 1-4, or AGND - 1.3V to AVDD - 1.8V when gain is 8-128. |+| 5 | AIN4P | input | Positive differential analog input 4; input voltage range AGND - 1.3V to AVDD when gain is 1-4, or AGND - 1.3V to AVDD - 1.8V when gain is 8-128. |+| 6 | AIN4N | input | Negative differential analog input 4; input voltage range AGND - 1.3V to AVDD when gain is 1-4, or AGND - 1.3V to AVDD - 1.8V when gain is 8-128. |+| 7 | AIN5N | input | Negative differential analog input 5; input voltage range AGND - 1.3V to AVDD when gain is 1-4, or AGND - 1.3V to AVDD - 1.8V when gain is 8-128. |+| 8 | AIN5P | input | Positive differential analog input 5; input voltage range AGND - 1.3V to AVDD when gain is 1-4, or AGND - 1.3V to AVDD - 1.8V when gain is 8-128. |+| 9 | AIN6P | input | Positive differential analog input 6; input voltage range AGND - 1.3V to AVDD when gain is 1-4, or AGND - 1.3V to AVDD - 1.8V when gain is 8-128. |+| 10 | AIN6N | input | Negative differential analog input 6; input voltage range AGND - 1.3V to AVDD when gain is 1-4, or AGND - 1.3V to AVDD - 1.8V when gain is 8-128. |+| 11 | AIN7N | input | Negative differential analog input 7; input voltage range AGND - 1.3V to AVDD when gain is 1-4, or AGND - 1.3V to AVDD - 1.8V when gain is 8-128. |+| 12 | AIN7P | input | Positive differential analog input 7; input voltage range AGND - 1.3V to AVDD when gain is 1-4, or AGND - 1.3V to AVDD - 1.8V when gain is 8-128. |+| 13 | AGND | power_in | Analog ground supply; connect to system ground plane. |+| 14 | REFIN | input | External reference voltage input; accepts 1.1V to 1.3V; do not place capacitance on REFIN if current-detect mode is used. |+| 15 | AVDD | power_in | Analog power supply 2.7V to 3.6V in normal operating mode; connect 1-µF capacitor to AGND. |+| 16 | SYNC/RESET | input | Conversion synchronization or system reset input; active low; controls ADC conversion timing and device reset. |+| 17 | CS | input | Serial interface chip select input; active low; initiates SPI communication frame. |+| 18 | DRDY | output | Data ready output; active low pulse indicates new ADC conversion data available for readout. |+| 19 | SCLK | input | Serial clock input for SPI communication; clocks data in and out of the ADC. |+| 20 | DOUT | output | Serial data output from SPI interface; transmits ADC conversion data and status information. |+| 21 | DIN | input | Serial data input for SPI communication; receives register addresses and command/data words. |+| 22 | XTAL2 | output | Crystal oscillator excitation output or external clock input for crystal or external clock source. |+| 23 | XTAL1/CLKIN | input | Master clock input or crystal oscillator input; frequency 0.3MHz to 8.4MHz for high-resolution mode. |+| 24 | CAP | output | Digital LDO regulator output; connect 220-nF bypass capacitor to DGND. |+| 25 | DGND | power_in | Digital ground supply; connect to system ground plane. |+| 26 | DVDD | power_in | Digital power supply 2.7V to 3.6V; connect 1-µF capacitor to DGND. |+| 27 | NC | unconnected | No connection; leave unconnected or connect to AGND. |+| 28 | AGND | power_in | Analog ground supply; connect to system ground plane. |+| 29 | AIN0P | input | Positive differential analog input 0; input voltage range AGND - 1.3V to AVDD when gain is 1-4, or AGND - 1.3V to AVDD - 1.8V when gain is 8-128. |+| 30 | AIN0N | input | Negative differential analog input 0; input voltage range AGND - 1.3V to AVDD when gain is 1-4, or AGND - 1.3V to AVDD - 1.8V when gain is 8-128. |+| 31 | AIN1N | input | Negative differential analog input 1; input voltage range AGND - 1.3V to AVDD when gain is 1-4, or AGND - 1.3V to AVDD - 1.8V when gain is 8-128. |+| 32 | AIN1P | input | Positive differential analog input 1; input voltage range AGND - 1.3V to AVDD when gain is 1-4, or AGND - 1.3V to AVDD - 1.8V when gain is 8-128. |+| 33 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | QFN-32(4x4) |+| Category | Data Acquisition |+| Pins | 33 |++## CAD (KiCad official)++- Symbol: `ADS131M08IRSNR`+- Footprint: `Package_DFN_QFN:QFN-32-1EP_4x4mm_P0.4mm_EP2.9x2.9mm`+- 3D model: QFN-32(4x4) (KiCad packages3D, STEP)+- 3D model files: `ads131m08irsnr-etched.step` / `ads131m08irsnr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ads131m08irsnr.step` / `ads131m08irsnr.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/ads131m08) (119 pp, sha256 `b5b15a08a7950103`, retrieved 2026-10-01, 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-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](docs/ads131m08irsnr-datasheet.pdf)
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input voltage range AGND - 1.3V to AVDD when gain is 1-4, or AGND - 1.3V to AVDD - 1.8V when gain is 8-128."+ },+ {+ "number": "2",+ "name": "AIN2N",+ "type": "input",+ "description": "Negative differential analog input 2; input voltage range AGND - 1.3V to AVDD when gain is 1-4, or AGND - 1.3V to AVDD - 1.8V when gain is 8-128."+ },+ {+ "number": "3",+ "name": "AIN3N",+ "type": "input",+ "description": "Negative differential analog input 3; input voltage range AGND - 1.3V to AVDD when gain is 1-4, or AGND - 1.3V to AVDD - 1.8V when gain is 8-128."+ },+ {+ "number": "4",+ "name": "AIN3P",+ "type": "input",+ "description": "Positive differential analog input 3; input voltage range AGND - 1.3V to AVDD when gain is 1-4, or AGND - 1.3V to AVDD - 1.8V when gain is 8-128."+ },+ {+ "number": "5",+ "name": "AIN4P",+ "type": "input",+ "description": "Positive differential analog input 4; input voltage range AGND - 1.3V to AVDD when gain is 1-4, or AGND - 1.3V to AVDD - 1.8V when gain is 8-128."+ },+ {+ "number": "6",+ "name": "AIN4N",+ "type": "input",+ "description": "Negative differential analog input 4; input voltage range AGND - 1.3V to AVDD when gain is 1-4, or AGND - 1.3V to AVDD - 1.8V when gain is 8-128."+ },+ {+ "number": "7",+ "name": "AIN5N",+ "type": "input",+ "description": "Negative differential analog input 5; input voltage range AGND - 1.3V to AVDD when gain is 1-4, or AGND - 1.3V to AVDD - 1.8V when gain is 8-128."+ },+ {+ "number": "8",+ "name": "AIN5P",+ "type": "input",+ "description": "Positive differential analog input 5; input voltage range AGND - 1.3V to AVDD when gain is 1-4, or AGND - 1.3V to AVDD - 1.8V when gain is 8-128."+ },+ {+ "number": "9",+ "name": "AIN6P",+ "type": "input",+ "description": "Positive differential analog input 6; input voltage range AGND - 1.3V to AVDD when gain is 1-4, or AGND - 1.3V to AVDD - 1.8V when gain is 8-128."+ },+ {+ "number": "10",+ "name": "AIN6N",+ "type": "input",+ "description": "Negative differential analog input 6; input voltage range AGND - 1.3V to AVDD when gain is 1-4, or AGND - 1.3V to AVDD - 1.8V when gain is 8-128."+ },+ {+ "number": "11",+ "name": "AIN7N",+ "type": "input",+ "description": "Negative differential analog input 7; input voltage range AGND - 1.3V to AVDD when gain is 1-4, or AGND - 1.3V to AVDD - 1.8V when gain is 8-128."+ },+ {+ "number": "12",+ "name": "AIN7P",+ "type": "input",+ "description": "Positive differential analog input 7; input voltage range AGND - 1.3V to AVDD when gain is 1-4, or AGND - 1.3V to AVDD - 1.8V when gain is 8-128."+ },+ {+ "number": "13",+ "name": "AGND",+ "type": "power_in",+ "description": "Analog ground supply; connect to system ground plane."+ },+ {+ "number": "14",+ "name": "REFIN",+ "type": "input",+ "description": "External reference voltage input; accepts 1.1V to 1.3V; do not place capacitance on REFIN if current-detect mode is used."+ },+ {+ "number": "15",+ "name": "AVDD",+ "type": "power_in",+ "description": "Analog power supply 2.7V to 3.6V in normal operating mode; connect 1-µF capacitor to AGND."+ },+ {+ "number": "16",+ "name": "SYNC/RESET",+ "type": "input",+ "description": "Conversion synchronization or system reset input; active low; controls ADC conversion timing and device reset."+ },+ {+ "number": "17",+ "name": "CS",+ "type": "input",+ "description": "Serial interface chip select input; active low; initiates SPI communication frame."+ },+ {+ "number": "18",+ "name": "DRDY",+ "type": "output",+ "description": "Data ready output; active low pulse indicates new ADC conversion data available for readout."+ },+ {+ "number": "19",+ "name": "SCLK",+ "type": "input",+ "description": "Serial clock input for SPI communication; clocks data in and out of the ADC."+ },+ {+ "number": "20",+ "name": "DOUT",+ "type": "output",+ "description": "Serial data output from SPI interface; transmits ADC conversion data and status information."+ },+ {+ "number": "21",+ "name": "DIN",+ "type": "input",+ "description": "Serial data input for SPI communication; receives register addresses and command/data words."+ },+ {+ "number": "22",+ "name": "XTAL2",+ "type": "output",+ "description": "Crystal oscillator excitation output or external clock input for crystal or external clock source."+ },+ {+ "number": "23",+ "name": "XTAL1/CLKIN",+ "type": "input",+ "description": "Master clock input or crystal oscillator input; frequency 0.3MHz to 8.4MHz for high-resolution mode."+ },+ {+ "number": "24",+ "name": "CAP",+ "type": "output",+ "description": "Digital LDO regulator output; connect 220-nF bypass capacitor to DGND."+ },+ {+ "number": "25",+ "name": "DGND",+ "type": "power_in",+ "description": "Digital ground supply; connect to system ground plane."+ },+ {+ "number": "26",+ "name": "DVDD",+ "type": "power_in",+ "description": "Digital power supply 2.7V to 3.6V; connect 1-µF capacitor to DGND."+ },+ {+ "number": "27",+ "name": "NC",+ "type": "unconnected",+ "description": "No connection; leave unconnected or connect to AGND."+ },+ {+ "number": "28",+ "name": "AGND",+ "type": "power_in",+ "description": "Analog ground supply; connect to system ground plane."+ },+ {+ "number": "29",+ "name": "AIN0P",+ "type": "input",+ "description": "Positive differential analog input 0; input voltage range AGND - 1.3V to AVDD when gain is 1-4, or AGND - 1.3V to AVDD - 1.8V when gain is 8-128."+ },+ {+ "number": "30",+ "name": "AIN0N",+ "type": "input",+ "description": "Negative differential analog input 0; input voltage range AGND - 1.3V to AVDD when gain is 1-4, or AGND - 1.3V to AVDD - 1.8V when gain is 8-128."+ },+ {+ "number": "31",+ "name": "AIN1N",+ "type": "input",+ "description": "Negative differential analog input 1; input voltage range AGND - 1.3V to AVDD when gain is 1-4, or AGND - 1.3V to AVDD - 1.8V when gain is 8-128."+ },+ {+ "number": "32",+ "name": "AIN1P",+ "type": "input",+ "description": "Positive differential analog input 1; input voltage range AGND - 1.3V to AVDD when gain is 1-4, or AGND - 1.3V to AVDD - 1.8V when gain is 8-128."+ },+ {+ "number": "33",+ "name": "EP",+ "type": "passive",+ "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.3",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.3",+ "primary_model": "claude-haiku-4-5-20251001",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-5-5",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [+ "extractor flagged: Thermal pad (exposed pad on underside) is present but unnumbered in WQFN package; datasheet page 5 s; Analog input voltage ranges vary based on device gain setting; descriptions reflect recommended oper",+ "exposed pad 33 added from the footprint"+ ],+ "pages_sent": 18,+ "cost_usd": 0.1717,+ "at": "2026-10-01T02:47:58"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/ads131m08",+ "pages": 119,+ "sha256": "b5b15a08a7950103",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 33,+ "described": 33,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ }+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}