component
ADS7861IBRHBT
Public Made by Adomby adom
Texas Instruments Analog To Digital Converters (ADCs), VQFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"title": "ADS7861IBRHBT",
"brief": "Texas Instruments Analog To Digital Converters (ADCs), VQFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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"component": {
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"manufacturer": "Texas Instruments",
"package": "VQFN-32-EP(5x5)",
"pin_count": 33,
"category": "ADC/DAC/Data Conversion",
"subcategory": "Analog To Digital Converters (ADCs)",
"datasheet": "https://www.ti.com/lit/ds/symlink/ads7861ibrhbt.pdf",
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"lcsc": "C2871923",
"digikey": "296-19570-2-ND",
"mouser": "595-ADS7861IBRHBT"
},
"distributor_check": {
"checked_at": "2026-10-31T18:31:52Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "296-19570-2-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": "595-ADS7861IBRHBT",
"status": "found"
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},
"pins": [
{
"number": "1",
"name": "CH B1+",
"type": "input",
"description": "Noninverting input of Channel B1, a fully differential input that must stay within GND - 300mV to VDD + 0.3V."
},
{
"number": "2",
"name": "CH B1–",
"type": "input",
"description": "Inverting input of Channel B1, part of a fully differential input pair."
},
{
"number": "3",
"name": "CH B0+",
"type": "input",
"description": "Noninverting input of Channel B0, a fully differential input."
},
{
"number": "4",
"name": "CH B0–",
"type": "input",
"description": "Inverting input of Channel B0, part of a fully differential input pair."
},
{
"number": "5",
"name": "CH A1+",
"type": "input",
"description": "Noninverting input of Channel A1, a fully differential input."
},
{
"number": "6",
"name": "CH A1–",
"type": "input",
"description": "Inverting input of Channel A1, part of a fully differential input pair."
},
{
"number": "7",
"name": "CH A0+",
"type": "input",
"description": "Noninverting input of Channel A0, a fully differential input."
},
{
"number": "8",
"name": "CH A0–",
"type": "input",
"description": "Inverting input of Channel A0, part of a fully differential input pair."
},
{
"number": "9",
"name": "REFIN",
"type": "input",
"description": "Reference input, with an external voltage range of 1.2V to 2.6V (2.5V typical)."
},
{
"number": "10",
"name": "REFOUT",
"type": "output",
"description": "2.5V internal reference output, with 2mA typical internal source current."
},
{
"number": "11",
"name": "NC",
"type": "unconnected",
"description": "Not connected."
},
{
"number": "12",
"name": "AGND",
"type": "power_in",
"description": "Analog ground; connect directly to digital ground (DGND, pin 28 on the QFN)."
},
{
"number": "13",
"name": "+VA",
"type": "power_in",
"description": "Analog power supply, +5VDC; connect directly to the digital supply and decouple to analog ground with a 0.1µF ceramic capacitor and a 10µF tantalum capacitor."
},
{
"number": "14",
"name": "NC",
"type": "unconnected",
"description": "Not connected."
},
{
"number": "15",
"name": "NC",
"type": "unconnected",
"description": "Not connected."
},
{
"number": "16",
"name": "M1",
"type": "input",
"description": "Selects the serial outputs: when LOW both Serial A and B are used, when HIGH Serial A carries both Channel A and B data and Serial B is tri-stated."
},
{
"number": "17",
"name": "M0",
"type": "input",
"description": "Selects two-channel (LOW, used with A0) or four-channel (HIGH, sequential conversion starting with A0 and B0) operation."
},
{
"number": "18",
"name": "A0",
"type": "input",
"description": "Address select that works with M0: with M0 LOW, A0 HIGH converts Channels A1 and B1, A0 LOW converts Channels A0 and B0."
},
{
"number": "19",
"name": "CONVST",
"type": "input",
"description": "Convert start: a LOW-to-HIGH transition switches the device from sample to hold mode independent of the external clock."
},
{
"number": "20",
"name": "RD",
"type": "input",
"description": "Synchronization pulse for the serial output."
},
{
"number": "21",
"name": "CS",
"type": "input",
"description": "Chip select: when LOW the Serial A and B outputs are active, when HIGH they are tri-stated."
},
{
"number": "22",
"name": "CLOCK",
"type": "input",
"description": "External CMOS-compatible clock input (0.2MHz to 8MHz) that synchronizes conversion; CLOCK = 16 • fSAMPLE."
},
{
"number": "23",
"name": "BUSY",
"type": "output",
"description": "Goes HIGH during a conversion and returns LOW after the third LSB has been transmitted on either serial output."
},
{
"number": "24",
"name": "SERIAL DATA A",
"type": "tri_state",
"description": "Serial output carrying channel information and 12 data bits, valid on the falling edge of the clock for 16 edges after the rising edge of RD; tri-stated when CS is HIGH."
},
{
"number": "25",
"name": "SERIAL DATA B",
"type": "tri_state",
"description": "Serial output carrying channel information and 12 data bits, valid on the falling edge of the clock for 16 edges after the rising edge of RD; tri-stated when CS is HIGH or M1 is HIGH."
},
{
"number": "26",
"name": "NC",
"type": "unconnected",
"description": "Not connected."
},
{
"number": "27",
"name": "+VD",
"type": "power_in",
"description": "Digital power supply, +5VDC; connect directly to +VA and must be ≤ +VA."
},
{
"number": "28",
"name": "DGND",
"type": "power_in",
"description": "Digital ground; connect directly to analog ground."
},
{
"number": "29",
"name": "NC",
"type": "unconnected",
"description": "Not connected."
},
{
"number": "30",
"name": "NC",
"type": "unconnected",
"description": "Not connected."
},
{
"number": "31",
"name": "NC",
"type": "unconnected",
"description": "Not connected."
},
{
"number": "32",
"name": "NC",
"type": "unconnected",
"description": "Not connected."
},
{
"number": "33",
"name": "EP",
"type": "passive",
"description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
}
],
"provenance": {
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"primary_model": "claude-sonnet-5-5",
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"guards": "pin_guards 0.1: passed",
"guard_notes": [
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],
"pages_sent": 15,
"cost_usd": 0.1941,
"at": "2026-10-31T18:31:32"
},
"datasheet": {
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"source_tier": "mfr"
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"described": 33,
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"refuses_to_fabricate": true
}
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{
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],
"package_dims": {
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"D": {
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"source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
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"metadata": {
"specs": {
"Manufacturer": "Texas Instruments",
"Package": "VQFN-32-EP(5x5)",
"Category": "ADC/DAC/Data Conversion",
"Pins": "33"
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"characteristics": {
"version": 1,
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"rows": [
{
"name": "Integral Linearity",
"symbol": "INL",
"kind": "electrical",
"unit": "LSB",
"min": -1,
"typ": 0.5,
"max": 1,
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{
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"kind": "electrical",
"unit": "LSB",
"min": -1,
"typ": 0.5,
"max": 1,
"conditions": "ADS7861IB",
"source_page": 3,
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{
"name": "Bipolar Offset Error",
"symbol": "",
"kind": "electrical",
"unit": "LSB",
"min": -3,
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"conditions": "TA = –40°C to +85°C",
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{
"name": "Bipolar Offset Error",
"symbol": "",
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"unit": "LSB",
"min": -3.5,
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"max": 3.5,
"conditions": "TA = –40°C to +125°C",
"source_page": 3,
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{
"name": "Bipolar Offset Error Match",
"symbol": "",
"kind": "electrical",
"unit": "LSB",
"min": null,
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"conditions": "ADS7861IB",
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{
"name": "Positive Gain Error",
"symbol": "",
"kind": "electrical",
"unit": "% of FSR",
"min": -0.5,
"typ": 0.1,
"max": 0.5,
"conditions": "Referenced to REFIN",
"source_page": 3,
"source": "datasheet"
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{
"name": "Positive Gain Error Match",
"symbol": "",
"kind": "electrical",
"unit": "LSB",
"min": null,
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"conditions": "ADS7861IB",
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{
"name": "Negative Gain Error",
"symbol": "",
"kind": "electrical",
"unit": "% of FSR",
"min": -0.5,
"typ": 0.1,
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"conditions": "Referenced to REFIN",
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{
"name": "Negative Gain Error Match",
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"kind": "electrical",
"unit": "LSB",
"min": null,
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"max": 1,
"conditions": "ADS7861IB",
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{
"name": "Power Supply Rejection Ratio",
"symbol": "PSRR",
"kind": "electrical",
"unit": "LSB",
"min": null,
"typ": 0.5,
"max": 2,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Input Leakage Current",
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{
"name": "Total Harmonic Distortion",
"symbol": "THD",
"kind": "electrical",
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"min": null,
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"max": -76,
"conditions": "VIN = ±2.5VPP at 100kHz; TA = –40°C to +85°C",
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{
"name": "Total Harmonic Distortion",
"symbol": "THD",
"kind": "electrical",
"unit": "dB",
"min": null,
"typ": null,
"max": -75,
"conditions": "VIN = ±2.5VPP at 100kHz; TA = –40°C to +125°C",
"source_page": 3,
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},
{
"name": "Spurious Free Dynamic Range",
"symbol": "SFDR",
"kind": "electrical",
"unit": "dB",
"min": 76,
"typ": null,
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"conditions": "VIN = ±2.5VPP at 100kHz; TA = –40°C to +85°C",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Spurious Free Dynamic Range",
"symbol": "SFDR",
"kind": "electrical",
"unit": "dB",
"min": 75,
"typ": null,
"max": null,
"conditions": "VIN = ±2.5VPP at 100kHz; TA = –40°C to +125°C",
"source_page": 3,
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},
{
"name": "SINAD",
"symbol": "SINAD",
"kind": "electrical",
"unit": "dB",
"min": 70,
"typ": null,
"max": null,
"conditions": "VIN = ±2.5VPP at 100kHz",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Internal Reference Voltage",
"symbol": "VREF",
"kind": "electrical",
"unit": "V",
"min": 2.475,
"typ": 2.5,
"max": 2.525,
"conditions": "Internal",
"source_page": 3,
"source": "datasheet"
},
{
"name": "External Reference Voltage Range",
"symbol": "VREF",
"kind": "electrical",
"unit": "V",
"min": 1.2,
"typ": 2.5,
"max": 2.6,
"conditions": "External",
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},
{
"name": "Reference Input Current",
"symbol": "",
"kind": "electrical",
"unit": "µA",
"min": null,
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},
{
"name": "Internal Reference Drift",
"symbol": "",
"kind": "temperature_coefficient",
"unit": "ppm/°C",
"min": null,
"typ": 25,
"max": null,
"conditions": "±25 typ",
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{
"name": "Input Capacitance",
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"kind": "electrical",
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"conditions": "Analog input",
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},
{
"name": "Common-Mode Rejection Ratio",
"symbol": "CMRR",
"kind": "electrical",
"unit": "dB",
"min": null,
"typ": 80,
"max": null,
"conditions": "At DC",
"source_page": 3,
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},
{
"name": "Noise",
"symbol": "",
"kind": "electrical",
"unit": "µVrms",
"min": null,
"typ": 120,
"max": null,
"conditions": "",
"source_page": 3,
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},
{
"name": "Logic Input High Voltage",
"symbol": "VIH",
"kind": "electrical",
"unit": "V",
"min": 3,
"typ": null,
"max": null,
"conditions": "IIH = +5µA",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Logic Input Low Voltage",
"symbol": "VIL",
"kind": "electrical",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 1,
"conditions": "IIL = +5µA",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Logic Output High Voltage",
"symbol": "VOH",
"kind": "electrical",
"unit": "V",
"min": 3.5,
"typ": null,
"max": null,
"conditions": "IOH = –0.5mA",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Logic Output Low Voltage",
"symbol": "VOL",
"kind": "electrical",
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"min": null,
"typ": null,
"max": 0.4,
"conditions": "IOL = –0.5mA",
"source_page": 3,
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},
{
"name": "External Clock",
"symbol": "fCLK",
"kind": "electrical",
"unit": "MHz",
"min": 0.2,
"typ": null,
"max": 8,
"conditions": "Optional",
"source_page": 3,
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},
{
"name": "Power Supply Voltage",
"symbol": "+V",
"kind": "electrical",
"unit": "V",
"min": 4.75,
"typ": 5,
"max": 5.25,
"conditions": "",
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},
{
"name": "Quiescent Current, +VA",
"symbol": "",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 5,
"max": 8.5,
"conditions": "TA = –40°C to +125°C",
"source_page": 3,
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},
{
"name": "Power Dissipation",
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{
"name": "Power Dissipation",
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