component
WM8974CGEFL
Public Made by Adomby adom
Cirrus Logic Audio Interface ICs, QFN-24-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"description": "Cirrus Logic Audio Interface ICs, QFN-24-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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"component": {
"mpn": "WM8974CGEFL",
"manufacturer": "Cirrus Logic",
"package": "QFN-24-EP(4x4)",
"pin_count": 25,
"category": "Interface ICs",
"subcategory": "Audio Interface ICs",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/580f3a7c8511e53547a64c64564ad1e4.pdf",
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"distributor_links": {
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"checked_at": "2026-10-30T06:25:57Z",
"source": "Component Ocean /api/assign-pns",
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"pn": null,
"status": "no match"
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"mouser": {
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},
"pins": [
{
"number": "1",
"name": "MICBIAS",
"type": "output",
"description": "Microphone bias output for electret microphones."
},
{
"number": "2",
"name": "AVDD",
"type": "power_in",
"description": "Analogue supply feeding the ADC and DAC, specified at 2.5V to 3.6V with an absolute maximum of +4.2V."
},
{
"number": "3",
"name": "AGND",
"type": "power_in",
"description": "Analogue ground feeding the ADC and DAC; analogue and digital grounds must always be within 0.3V of each other."
},
{
"number": "4",
"name": "DCVDD",
"type": "power_in",
"description": "Digital core supply specified at 1.71V to 3.6V, and must be 1.9V or higher when the PLL is used."
},
{
"number": "5",
"name": "DBVDD",
"type": "power_in",
"description": "Digital buffer (input/output) supply specified at 1.71V to 3.6V, subject to the DCVDD relationship in the recommended operating conditions notes."
},
{
"number": "6",
"name": "DGND",
"type": "power_in",
"description": "Digital ground; analogue and digital grounds must always be within 0.3V of each other."
},
{
"number": "7",
"name": "ADCDAT",
"type": "output",
"description": "ADC digital audio data output."
},
{
"number": "8",
"name": "DACDAT",
"type": "input",
"description": "DAC digital audio data input."
},
{
"number": "9",
"name": "FRAME",
"type": "bidirectional",
"description": "DAC and ADC sample rate clock or frame synch, configured as an input or, in master mode, an output generated by the WM8974."
},
{
"number": "10",
"name": "BCLK",
"type": "bidirectional",
"description": "Digital audio port clock, configured as an input or, in master mode, an output generated by the WM8974."
},
{
"number": "11",
"name": "MCLK",
"type": "input",
"description": "Master clock input, which can be used directly or through the on-chip PLL."
},
{
"number": "12",
"name": "CSB/GPIO",
"type": "bidirectional",
"description": "3-wire MPU chip select or general purpose input/output pin; GPIO function is only available in 2-wire mode."
},
{
"number": "13",
"name": "SCLK",
"type": "input",
"description": "3-wire MPU clock input or 2-wire MPU clock input."
},
{
"number": "14",
"name": "SDIN",
"type": "bidirectional",
"description": "3-wire MPU data input or 2-wire MPU data input."
},
{
"number": "15",
"name": "MODE",
"type": "input",
"description": "Control interface mode selection pin: low selects 2-wire mode and high selects 3-wire mode."
},
{
"number": "16",
"name": "MONOOUT",
"type": "output",
"description": "Mono line output."
},
{
"number": "17",
"name": "SPKOUTP",
"type": "output",
"description": "Positive speaker output."
},
{
"number": "18",
"name": "SPKGND",
"type": "power_in",
"description": "Speaker ground feeding the speaker and mono output amplifiers only."
},
{
"number": "19",
"name": "SPKOUTN",
"type": "output",
"description": "Negative speaker output."
},
{
"number": "20",
"name": "SPKVDD",
"type": "power_in",
"description": "Speaker supply feeding the speaker and mono output amplifiers only, specified at 2.5V to 5.5V with an absolute maximum of +7V."
},
{
"number": "21",
"name": "AUX",
"type": "input",
"description": "Auxiliary analogue input."
},
{
"number": "22",
"name": "VMID",
"type": "passive",
"description": "Decoupling pin for the midrail reference voltage."
},
{
"number": "23",
"name": "MICN",
"type": "input",
"description": "Negative microphone input."
},
{
"number": "24",
"name": "MICP",
"type": "input",
"description": "Positive microphone input (common mode)."
},
{
"number": "25",
"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": {
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"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 says the QFN ground paddle (exposed heat sink slug) should be connected to analogue gr; The note on DBVDD relative to DCVDD (note 3 under recommended operating conditions) has its comparis; Pin types were mapped to KiCad ERC classes from the datasheet's Type column: analogue outputs to out",
"exposed pad 25 added from the footprint"
],
"pages_sent": 14,
"cost_usd": 0.0794,
"at": "2026-10-30T06:25:44"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/580f3a7c8511e53547a64c64564ad1e4.pdf",
"pages": 89,
"sha256": "0f03918969831df6",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
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"described": 25,
"cites_pages": true,
"refuses_to_fabricate": true
}
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