component
AD7656ABSTZ
Public Made by Adomby adom
Analog Devices Analog To Digital Converters (ADCs), LQFP-64(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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{
"schema_version": 1,
"type": "component",
"slug": "ad7656abstz",
"title": "AD7656ABSTZ",
"brief": "Analog Devices Analog To Digital Converters (ADCs), LQFP-64(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
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"component": {
"mpn": "AD7656ABSTZ",
"manufacturer": "Analog Devices",
"package": "LQFP-64(10x10)",
"pin_count": 64,
"category": "Data Converters",
"subcategory": "Analog To Digital Converters (ADCs)",
"datasheet": "https://www.analog.com/media/en/technical-documentation/data-sheets/AD7656A.pdf",
"parts": {
"symbol": "ad7656abstz.kicad_sym",
"footprint": "ad7656abstz.kicad_mod",
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"lbr": "ad7656abstz.lbr"
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"distributor_links": {
"lcsc": "C651334",
"digikey": "505-AD7656ABSTZ-ND",
"mouser": "584-AD7656ABSTZ"
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"source": "Component Ocean /api/assign-pns",
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"pn": "505-AD7656ABSTZ-ND",
"status": "found"
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},
"pins": [
{
"number": "1",
"name": "DB14/REFBUFEN/DIS",
"type": "bidirectional",
"description": "Data Bit 14 in parallel mode, and Reference Buffer Enable/Disable; acts as a three-state digital input/output when SER/PAR/SEL = 0."
},
{
"number": "2",
"name": "DB13",
"type": "bidirectional",
"description": "Data Bit 13 three-state parallel I/O when SER/PAR/SEL = 0; tie to DGND when SER/PAR/SEL = 1."
},
{
"number": "3",
"name": "DB12",
"type": "bidirectional",
"description": "Data Bit 12 three-state parallel I/O when SER/PAR/SEL = 0; tie to DGND when SER/PAR/SEL = 1."
},
{
"number": "4",
"name": "DB11",
"type": "bidirectional",
"description": "Data Bit 11 three-state parallel output when SER/PAR/SEL = 0; tie to DGND when SER/PAR/SEL = 1."
},
{
"number": "5",
"name": "DB10/DOUT C",
"type": "bidirectional",
"description": "Data Bit 10 parallel output when SER/PAR/SEL = 0; serial data output C when SER/PAR/SEL = 1 and SEL C = 1."
},
{
"number": "6",
"name": "DB9/DOUT B",
"type": "bidirectional",
"description": "Data Bit 9 parallel output when SER/PAR/SEL = 0; serial data output B when SER/PAR/SEL = 1 and SEL B = 1."
},
{
"number": "7",
"name": "DB8/DOUT A",
"type": "bidirectional",
"description": "Data Bit 8 parallel output when SER/PAR/SEL = 0; serial data output A when SER/PAR/SEL = 1 and SEL A = 1."
},
{
"number": "8",
"name": "DGND",
"type": "power_in",
"description": "Digital ground reference for all digital circuitry; must not differ from AGND by more than 0.3 V, even transiently."
},
{
"number": "9",
"name": "VDRIVE",
"type": "power_in",
"description": "Logic supply input that sets the interface voltage, specified at 2.7 V to 5.25 V; decouple with 10 µF and 100 nF."
},
{
"number": "10",
"name": "DB7/HBEN/DCEN",
"type": "bidirectional",
"description": "Data Bit 7 in word mode, HBEN in byte mode, and DCEN daisy-chain enable in serial mode; tie DCEN to DGND when not daisy-chaining."
},
{
"number": "11",
"name": "DB6/SCLK",
"type": "input",
"description": "Data Bit 6 three-state output when SER/PAR/SEL = 0; serial read clock input SCLK (maximum 18 MHz) when SER/PAR/SEL = 1."
},
{
"number": "12",
"name": "DB5/DCIN A",
"type": "bidirectional",
"description": "Data Bit 5 parallel output when SER/PAR/SEL = 0; Daisy-Chain Input A when SER/PAR/SEL = 1 and DCEN = 1, otherwise tie to DGND."
},
{
"number": "13",
"name": "DB4/DCIN B",
"type": "bidirectional",
"description": "Data Bit 4 parallel output when SER/PAR/SEL = 0; Daisy-Chain Input B when SER/PAR/SEL = 1 and DCEN = 1, otherwise tie to DGND."
},
{
"number": "14",
"name": "DB3/DCIN C",
"type": "bidirectional",
"description": "Data Bit 3 parallel output when SER/PAR/SEL = 0; Daisy-Chain Input C when SER/PAR/SEL = 1 and DCEN = 1, otherwise tie to DGND."
},
{
"number": "15",
"name": "DB2/SEL C",
"type": "bidirectional",
"description": "Data Bit 2 parallel output when SER/PAR/SEL = 0; SEL C serial configuration input when SER/PAR/SEL = 1 (1 enables DOUT C)."
},
{
"number": "16",
"name": "DB1/SEL B",
"type": "bidirectional",
"description": "Data Bit 1 parallel output when SER/PAR/SEL = 0; SEL B serial configuration input when SER/PAR/SEL = 1 (1 enables DOUT B)."
},
{
"number": "17",
"name": "DB0/SEL A",
"type": "bidirectional",
"description": "Data Bit 0 parallel output when SER/PAR/SEL = 0; SEL A serial configuration input that must be 1 in serial mode."
},
{
"number": "18",
"name": "BUSY",
"type": "output",
"description": "Goes high when a conversion starts and stays high until the data is latched; do not start a new conversion while BUSY is high."
},
{
"number": "19",
"name": "CS",
"type": "input",
"description": "Active-low chip select that frames parallel reads/writes and serial reads; output bus is enabled when CS and RD are low."
},
{
"number": "20",
"name": "RD",
"type": "input",
"description": "Active-low read strobe that enables the parallel output bus with CS low; hold low in serial mode."
},
{
"number": "21",
"name": "CONVST C",
"type": "input",
"description": "Conversion start input for simultaneous sampling of V5 and V6; a low-to-high edge starts the conversion."
},
{
"number": "22",
"name": "CONVST B",
"type": "input",
"description": "Conversion start input for simultaneous sampling of V3 and V4; a low-to-high edge starts the conversion."
},
{
"number": "23",
"name": "CONVST A",
"type": "input",
"description": "Conversion start input for simultaneous sampling of V1 and V2; a low-to-high edge starts the conversion."
},
{
"number": "24",
"name": "STBY",
"type": "input",
"description": "Standby input for all six ADCs; high for normal operation and low for standby."
},
{
"number": "25",
"name": "DGND",
"type": "power_in",
"description": "Digital ground reference; connect together with pin 8 to the system DGND plane."
},
{
"number": "26",
"name": "DVCC",
"type": "power_in",
"description": "Digital power supply specified at 4.75 V to 5.25 V; keep within 0.3 V of AVCC and decouple with 10 µF and 100 nF."
},
{
"number": "27",
"name": "RANGE",
"type": "input",
"description": "Input range select: logic 1 selects ±2 × VREF and logic 0 selects ±4 × VREF, sampled at the falling edge of BUSY in hardware mode."
},
{
"number": "28",
"name": "RESET",
"type": "input",
"description": "Active-high reset that aborts any conversion and clears the internal register; a RESET pulse is required after power-up."
},
{
"number": "29",
"name": "W/B",
"type": "input",
"description": "Word/byte select: logic low for 16-bit parallel word mode and logic high for byte mode; tie to DGND in serial mode."
},
{
"number": "30",
"name": "VSS",
"type": "power_in",
"description": "Negative analog supply, specified from −6 V to −16.5 V; decouple with 10 µF and 100 nF."
},
{
"number": "31",
"name": "VDD",
"type": "power_in",
"description": "Positive analog supply, specified from 6 V to 16.5 V; decouple with 10 µF and 100 nF."
},
{
"number": "32",
"name": "AGND",
"type": "power_in",
"description": "Analog ground reference for all analog circuitry; connect all AGND pins to the system AGND plane."
},
{
"number": "33",
"name": "V1",
"type": "input",
"description": "Single-ended bipolar analog input 1, with range set by the RANGE pin or the RNGC-RNGA control bits."
},
{
"number": "34",
"name": "AVCC",
"type": "power_in",
"description": "Analog supply for the ADC cores, specified at 4.75 V to 5.25 V; decouple to AGND with 10 µF and 100 nF."
},
{
"number": "35",
"name": "AVCC",
"type": "power_in",
"description": "Analog supply for the ADC cores, specified at 4.75 V to 5.25 V; decouple to AGND with 10 µF and 100 nF."
},
{
"number": "36",
"name": "V2",
"type": "input",
"description": "Single-ended bipolar analog input 2, with range set by the RANGE pin or the RNGC-RNGA control bits."
},
{
"number": "37",
"name": "AGND",
"type": "power_in",
"description": "Analog ground reference for all analog circuitry; connect to the system AGND plane."
},
{
"number": "38",
"name": "AGND",
"type": "power_in",
"description": "Analog ground reference for all analog circuitry; connect to the system AGND plane."
},
{
"number": "39",
"name": "V3",
"type": "input",
"description": "Single-ended bipolar analog input 3, with range set by the RANGE pin or the RNGC-RNGA control bits."
},
{
"number": "40",
"name": "AVCC",
"type": "power_in",
"description": "Analog supply for the ADC cores, specified at 4.75 V to 5.25 V; decouple to AGND with 10 µF and 100 nF."
},
{
"number": "41",
"name": "AVCC",
"type": "power_in",
"description": "Analog supply for the ADC cores, specified at 4.75 V to 5.25 V; decouple to AGND with 10 µF and 100 nF."
},
{
"number": "42",
"name": "V4",
"type": "input",
"description": "Single-ended bipolar analog input 4, with range set by the RANGE pin or the RNGC-RNGA control bits."
},
{
"number": "43",
"name": "AGND",
"type": "power_in",
"description": "Analog ground reference for all analog circuitry; connect to the system AGND plane."
},
{
"number": "44",
"name": "AGND",
"type": "power_in",
"description": "Analog ground reference for all analog circuitry; connect to the system AGND plane."
},
{
"number": "45",
"name": "V5",
"type": "input",
"description": "Single-ended bipolar analog input 5, with range set by the RANGE pin or the RNGC-RNGA control bits."
},
{
"number": "46",
"name": "AVCC",
"type": "power_in",
"description": "Analog supply for the ADC cores, specified at 4.75 V to 5.25 V; decouple to AGND with 10 µF and 100 nF."
},
{
"number": "47",
"name": "AVCC",
"type": "power_in",
"description": "Analog supply for the ADC cores, specified at 4.75 V to 5.25 V; decouple to AGND with 10 µF and 100 nF."
},
{
"number": "48",
"name": "V6",
"type": "input",
"description": "Single-ended bipolar analog input 6, with range set by the RANGE pin or the RNGC-RNGA control bits."
},
{
"number": "49",
"name": "AGND",
"type": "power_in",
"description": "Analog ground reference for all analog circuitry; connect to the system AGND plane."
},
{
"number": "50",
"name": "AVCC",
"type": "power_in",
"description": "Analog supply for the ADC cores, specified at 4.75 V to 5.25 V; decouple to AGND with 10 µF and 100 nF."
},
{
"number": "51",
"name": "REFIN/REFOUT",
"type": "passive",
"description": "On-chip reference output for external use, or external reference input when the internal reference is disabled; decouple with at least 10 µF when enabled."
},
{
"number": "52",
"name": "AGND",
"type": "power_in",
"description": "Analog ground reference for all analog circuitry; connect to the system AGND plane."
},
{
"number": "53",
"name": "AGND",
"type": "power_in",
"description": "Analog ground reference for all analog circuitry; connect to the system AGND plane."
},
{
"number": "54",
"name": "REFCAPA",
"type": "passive",
"description": "Reference buffer decoupling pin for ADC pair A; decouple to AGND with 10 µF and 100 nF."
},
{
"number": "55",
"name": "AGND",
"type": "power_in",
"description": "Analog ground reference for all analog circuitry; connect to the system AGND plane."
},
{
"number": "56",
"name": "REFCAPB",
"type": "passive",
"description": "Reference buffer decoupling pin for ADC pair B; decouple to AGND with 10 µF and 100 nF."
},
{
"number": "57",
"name": "AGND",
"type": "power_in",
"description": "Analog ground reference for all analog circuitry; connect to the system AGND plane."
},
{
"number": "58",
"name": "REFCAPC",
"type": "passive",
"description": "Reference buffer decoupling pin for ADC pair C; decouple to AGND with 10 µF and 100 nF."
},
{
"number": "59",
"name": "AGND",
"type": "power_in",
"description": "Analog ground reference for all analog circuitry; connect to the system AGND plane."
},
{
"number": "60",
"name": "AVCC",
"type": "power_in",
"description": "Analog supply for the ADC cores, specified at 4.75 V to 5.25 V; decouple to AGND with 10 µF and 100 nF."
},
{
"number": "61",
"name": "SER/PAR/SEL",
"type": "input",
"description": "Serial/parallel select: logic low selects the parallel interface and logic high selects the serial interface."
},
{
"number": "62",
"name": "H/S SEL",
"type": "input",
"description": "Hardware/software select: logic 0 selects hardware mode with CONVST x choosing ADC pairs, and logic 1 selects software control-register mode."
},
{
"number": "63",
"name": "WR/REFEN/DIS",
"type": "input",
"description": "Write strobe for control-register writes in software mode, or reference enable/disable when H/S SEL = 0."
},
{
"number": "64",
"name": "DB15",
"type": "bidirectional",
"description": "Data Bit 15 three-state parallel I/O when SER/PAR/SEL = 0; tie to DGND when SER/PAR/SEL = 1."
}
],
"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: Pin mapping taken from the Table 5 pin function descriptions (pages 7-9) and the garbled pin configu"
],
"pages_sent": 14,
"cost_usd": 0.0559,
"at": "2026-10-28T15:50:51"
},
"datasheet": {
"url": "https://www.analog.com/media/en/technical-documentation/data-sheets/AD7656A.pdf",
"pages": 28,
"sha256": "44580dc51e815507",
"source_tier": "mfr"
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"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 64,
"described": 64,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
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"metadata": {
"specs": {
"Manufacturer": "Analog Devices",
"Package": "LQFP-64(10x10)",
"Category": "Data Converters",
"Pins": "64"
},
"characteristics": {
"version": 1,
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{
"name": "Positive Full-Scale Error",
"symbol": "",
"kind": "tolerance",
"unit": "% FSR",
"min": -0.75,
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