component
ADS1191IRSMR
Public Made by Adomby adom
Texas Instruments Analog Front End (AFEs), VQFN-32-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"description": "Texas Instruments Analog Front End (AFEs), VQFN-32-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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"adc-dac-data conversion",
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"extractor-text"
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"component": {
"mpn": "ADS1191IRSMR",
"manufacturer": "Texas Instruments",
"package": "VQFN-32-EP(4x4)",
"pin_count": 33,
"category": "ADC/DAC/Data Conversion",
"subcategory": "Analog Front End (AFEs)",
"datasheet": "https://www.ti.com/lit/ds/symlink/ads1191.pdf",
"parts": {
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"lbr": "ads1191irsmr.lbr"
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"distributor_links": {
"lcsc": "C528625",
"digikey": "296-50883-2-ND",
"mouser": "595-ADS1191IRSMR"
},
"distributor_check": {
"checked_at": "2026-11-05T21:19:49Z",
"source": "Component Ocean /api/assign-pns",
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"pn": "296-50883-2-ND",
"status": "found"
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},
"pins": [
{
"number": "1",
"name": "PGA1N",
"type": "output",
"description": "Differential analog negative output of PGA channel 1."
},
{
"number": "2",
"name": "PGA1P",
"type": "output",
"description": "Differential analog positive output of PGA channel 1."
},
{
"number": "3",
"name": "IN1N",
"type": "input",
"description": "Differential analog negative input 1; excludes effects of noise, linearity, offset, and gain error."
},
{
"number": "4",
"name": "IN1P",
"type": "input",
"description": "Differential analog positive input 1; excludes effects of noise, linearity, offset, and gain error."
},
{
"number": "5",
"name": "IN2N",
"type": "input",
"description": "Differential analog negative input 2; excludes effects of noise, linearity, offset, and gain error."
},
{
"number": "6",
"name": "IN2P",
"type": "input",
"description": "Differential analog positive input 2; excludes effects of noise, linearity, offset, and gain error."
},
{
"number": "7",
"name": "PGA2N",
"type": "output",
"description": "Differential analog negative output of PGA channel 2."
},
{
"number": "8",
"name": "PGA2P",
"type": "output",
"description": "Differential analog positive output of PGA channel 2."
},
{
"number": "9",
"name": "VREFP",
"type": "bidirectional",
"description": "Positive reference voltage; analog input/output pin."
},
{
"number": "10",
"name": "VREFN",
"type": "input",
"description": "Negative reference voltage."
},
{
"number": "11",
"name": "VCAP1",
"type": "passive",
"description": "Analog bypass capacitor connection."
},
{
"number": "12",
"name": "AVDD",
"type": "power_in",
"description": "Analog supply; AVDD to AVSS is specified from -0.3 V to +7 V absolute maximum."
},
{
"number": "13",
"name": "AVSS",
"type": "power_in",
"description": "Analog ground."
},
{
"number": "14",
"name": "CLKSEL",
"type": "input",
"description": "Digital input that selects the master clock source."
},
{
"number": "15",
"name": "PWDN/RESET",
"type": "input",
"description": "Power-down and system reset input; active low."
},
{
"number": "16",
"name": "START",
"type": "input",
"description": "Digital input to start conversions."
},
{
"number": "17",
"name": "CLK",
"type": "input",
"description": "Master clock input."
},
{
"number": "18",
"name": "CS",
"type": "input",
"description": "SPI chip select digital input."
},
{
"number": "19",
"name": "DIN",
"type": "input",
"description": "SPI serial data input."
},
{
"number": "20",
"name": "SCLK",
"type": "input",
"description": "SPI serial clock digital input."
},
{
"number": "21",
"name": "DOUT",
"type": "output",
"description": "SPI serial data output."
},
{
"number": "22",
"name": "DRDY",
"type": "output",
"description": "Data ready digital output; active low."
},
{
"number": "23",
"name": "DVDD",
"type": "power_in",
"description": "Digital power supply; DVDD to DGND is specified from -0.3 V to +7 V absolute maximum."
},
{
"number": "24",
"name": "DGND",
"type": "power_in",
"description": "Digital ground."
},
{
"number": "25",
"name": "GPIO2/RCLK2",
"type": "bidirectional",
"description": "General-purpose digital input/output GPIO2."
},
{
"number": "26",
"name": "GPIO1/RCLK1",
"type": "bidirectional",
"description": "General-purpose digital input/output GPIO1."
},
{
"number": "27",
"name": "VCAP2",
"type": "passive",
"description": "Analog bypass capacitor connection."
},
{
"number": "28",
"name": "RLDINV",
"type": "input",
"description": "Right leg drive inverting input."
},
{
"number": "29",
"name": "RLDIN/RLDREF",
"type": "input",
"description": "Right leg drive input to the MUX and RLD reference."
},
{
"number": "30",
"name": "RLDOUT",
"type": "input",
"description": "Right leg drive output pin, listed as an analog input in the datasheet table."
},
{
"number": "31",
"name": "IN3P",
"type": "bidirectional",
"description": "Differential analog positive input 3; analog input/output pin."
},
{
"number": "32",
"name": "IN3N",
"type": "bidirectional",
"description": "Differential analog negative input 3; analog input/output pin."
},
{
"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-5-5",
"primary_mode": "text",
"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: The datasheet lists the RSM package as QFN-32 and does not mention an exposed thermal pad (EP) or it; RLDOUT is listed as 'Analog input' in the datasheet pin table although its function is the right leg"
],
"pages_sent": 11,
"cost_usd": 0.0267,
"at": "2026-11-05T21:19:42"
},
"datasheet": {
"url": "https://www.ti.com/lit/ds/symlink/ads1191.pdf",
"pages": 70,
"sha256": "358207ed2a44fab8",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 33,
"described": 33,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
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},
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}