component
PCM1681TPWPRQ1
Public Made by Adomby adom
Texas Instruments ADCs/DACs - Special Purpose, HTSSOP-28. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"type": "component",
"slug": "pcm1681tpwprq1",
"title": "PCM1681TPWPRQ1",
"brief": "Texas Instruments ADCs/DACs - Special Purpose, HTSSOP-28. 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": "PCM1681TPWPRQ1",
"manufacturer": "Texas Instruments",
"package": "HTSSOP-28",
"pin_count": 29,
"category": "Data Acquisition",
"subcategory": "ADCs/DACs - Special Purpose",
"datasheet": "https://www.ti.com/cn/lit/gpn/pcm1681-q1",
"parts": {
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"footprint": "pcm1681tpwprq1.kicad_mod",
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"lbr": "pcm1681tpwprq1.lbr"
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"distributor_links": {
"lcsc": "C2667052",
"digikey": "296-29414-2-ND",
"mouser": "595-PCM1681TPWPRQ1"
},
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"checked_at": "2026-10-01T06:49:19Z",
"source": "Component Ocean /api/assign-pns",
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"pn": "296-29414-2-ND",
"status": "found"
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"pn": "595-PCM1681TPWPRQ1",
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},
"pins": [
{
"number": "1",
"name": "ZR1/ZR1/FMT0",
"type": "bidirectional",
"description": "Zero-flag output 1 for SPI/I2C modes or format control input 0 for parallel H/W mode; Schmitt-trigger 5-V tolerant."
},
{
"number": "2",
"name": "MS/ADR/FMT1",
"type": "input",
"description": "Select input for SPI, address input for I2C, format control input 1 for H/W; Schmitt-trigger 5-V tolerant."
},
{
"number": "3",
"name": "MC/SCL/DEMP",
"type": "input",
"description": "Shift clock input for SPI, serial clock input for I2C, de-emphasis control for H/W; Schmitt-trigger 5-V tolerant."
},
{
"number": "4",
"name": "MD/SDA/MUTE",
"type": "bidirectional",
"description": "Serial data input for SPI, serial data input/output for I2C, mute control for H/W; Schmitt-trigger 5-V tolerant, open-drain output in I2C mode."
},
{
"number": "5",
"name": "SCK",
"type": "input",
"description": "System clock input with frequency of 128, 192, 256, 384, 512, 768, or 1152 fS (1.024 to 36.864 MHz)."
},
{
"number": "6",
"name": "DATA1",
"type": "input",
"description": "Serial audio data input for VOUT1 and VOUT2; Schmitt-trigger 5-V tolerant."
},
{
"number": "7",
"name": "BCK",
"type": "input",
"description": "Shift clock input for serial audio data; Schmitt-trigger 5-V tolerant."
},
{
"number": "8",
"name": "LRCK",
"type": "input",
"description": "Left/right clock input with frequency equal to sampling rate fS; 5-V tolerant."
},
{
"number": "9",
"name": "VDD",
"type": "power_in",
"description": "Digital power supply, 3.3 V nominal (3.0 to 3.6 V operating range)."
},
{
"number": "10",
"name": "DGND",
"type": "power_in",
"description": "Digital ground."
},
{
"number": "11",
"name": "DATA2",
"type": "input",
"description": "Serial audio data input for VOUT3 and VOUT4; Schmitt-trigger 5-V tolerant."
},
{
"number": "12",
"name": "DATA3",
"type": "input",
"description": "Serial audio data input for VOUT5 and VOUT6; Schmitt-trigger 5-V tolerant."
},
{
"number": "13",
"name": "DATA4",
"type": "input",
"description": "Serial audio data input for VOUT7 and VOUT8; Schmitt-trigger 5-V tolerant."
},
{
"number": "14",
"name": "MSEL",
"type": "input",
"description": "Mode control select for I2C (tied to DGND), SPI (tied to VDD), or parallel H/W (pull-up/pull-down for wide/narrow oversampling); VDD/2 biased quad-state input."
},
{
"number": "15",
"name": "VOUT8",
"type": "output",
"description": "Unbalanced audio output for right-channel of DATA4, 3.75 VPP typical into 5 kΩ load."
},
{
"number": "16",
"name": "VOUT7",
"type": "output",
"description": "Unbalanced audio output for left-channel of DATA4, 3.75 VPP typical into 5 kΩ load."
},
{
"number": "17",
"name": "VCC1",
"type": "power_in",
"description": "Analog power supply, 5 V nominal (4.5 to 5.5 V operating range)."
},
{
"number": "18",
"name": "AGND1",
"type": "power_in",
"description": "Analog ground."
},
{
"number": "19",
"name": "VOUT6",
"type": "output",
"description": "Unbalanced audio output for right-channel of DATA3, 3.75 VPP typical into 5 kΩ load."
},
{
"number": "20",
"name": "VOUT5",
"type": "output",
"description": "Unbalanced audio output for left-channel of DATA3, 3.75 VPP typical into 5 kΩ load."
},
{
"number": "21",
"name": "VOUT4",
"type": "output",
"description": "Unbalanced audio output for right-channel of DATA2, 3.75 VPP typical into 5 kΩ load."
},
{
"number": "22",
"name": "VOUT3",
"type": "output",
"description": "Unbalanced audio output for left-channel of DATA2, 3.75 VPP typical into 5 kΩ load."
},
{
"number": "23",
"name": "VCC2",
"type": "power_in",
"description": "Analog power supply, 5 V nominal (4.5 to 5.5 V operating range)."
},
{
"number": "24",
"name": "AGND2",
"type": "power_in",
"description": "Analog ground."
},
{
"number": "25",
"name": "VCOM",
"type": "output",
"description": "Common voltage output biased to 0.486 VCC; requires 10-μF capacitor bypass to AGND."
},
{
"number": "26",
"name": "VOUT2",
"type": "output",
"description": "Unbalanced audio output for right-channel of DATA1, 3.75 VPP typical into 5 kΩ load."
},
{
"number": "27",
"name": "VOUT1",
"type": "output",
"description": "Unbalanced audio output for left-channel of DATA1, 3.75 VPP typical into 5 kΩ load."
},
{
"number": "28",
"name": "ZR2",
"type": "output",
"description": "Zero-flag output 2, detects silence on assigned channels; active-high by default."
},
{
"number": "29",
"name": "EP",
"type": "passive",
"description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
}
],
"provenance": {
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"factory_chain": {
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"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": [
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],
"pages_sent": 12,
"cost_usd": 0.1602,
"at": "2026-10-01T06:49:04"
},
"datasheet": {
"url": "https://www.ti.com/cn/lit/gpn/pcm1681-q1",
"pages": 46,
"sha256": "a111585ea2f64b35",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
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"described": 29,
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"refuses_to_fabricate": true
}
},
"viewers": {
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"metadata": {
"specs": {
"Manufacturer": "Texas Instruments",
"Package": "HTSSOP-28",
"Category": "Data Acquisition",
"Pins": "29"
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"email": "[email protected]"
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