component
ALC5651-CG
Public Made by Adomby adom
Realtek Semicon Audio Interface ICs, QFN-40-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"schema_version": 1,
"type": "component",
"slug": "alc5651-cg",
"title": "ALC5651-CG",
"brief": "Realtek Semicon Audio Interface ICs, QFN-40-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
"tags": [
"component",
"interface ics",
"alc5651-cg",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "ALC5651-CG",
"manufacturer": "Realtek Semicon",
"package": "QFN-40-EP(5x5)",
"pin_count": 41,
"category": "Interface ICs",
"subcategory": "Audio Interface ICs",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/d0f4acfa4286ab985fe2c49988824023.pdf",
"parts": {
"symbol": "alc5651-cg.kicad_sym",
"footprint": "alc5651-cg.kicad_mod",
"model_3d": "alc5651-cg-hero.glb",
"model_3d_plain": "alc5651-cg-etched.glb",
"model_3d_step": "alc5651-cg-etched.step",
"model_3d_step_plain": "alc5651-cg.step",
"lbr": "alc5651-cg.lbr"
},
"distributor_links": {
"lcsc": "C963633"
},
"distributor_check": {
"checked_at": "2026-11-05T15:56:27Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "no match"
},
"mouser": {
"pn": null,
"status": "no match"
}
},
"pins": [
{
"number": "1",
"name": "MICVDD",
"type": "power_in",
"description": "Analog power for MICBIAS, 3.0V to 3.3V (default 3.3V recommended)."
},
{
"number": "2",
"name": "MICBIAS1",
"type": "output",
"description": "Bias voltage output for microphone, programmable analog DC output."
},
{
"number": "3",
"name": "JD1",
"type": "input",
"description": "First jack detection pin, multi-level; thresholds Vt1 = 1.485V, Vt2 = 1.925V, Vt3 = 2.7V."
},
{
"number": "4",
"name": "IN1P/DMIC_DAT",
"type": "input",
"description": "Single-ended analog input for microphone 1, or digital microphone data input in DMIC mode."
},
{
"number": "5",
"name": "IN2P",
"type": "input",
"description": "Positive differential input for microphone 2, or left channel line input."
},
{
"number": "6",
"name": "IN2N/JD2",
"type": "input",
"description": "Negative differential input for microphone 2, or right channel line input; also second jack detection pin with JD threshold VIL = 0.5V, VIH = 1.2V."
},
{
"number": "7",
"name": "IN3P",
"type": "input",
"description": "Single-ended input for microphone 3."
},
{
"number": "8",
"name": "DACREF",
"type": "power_in",
"description": "Analog power, 1.71V to 1.9V (default 1.8V recommended)."
},
{
"number": "9",
"name": "AVDD",
"type": "power_in",
"description": "Analog power, 1.71V to 1.9V (default 1.8V recommended)."
},
{
"number": "10",
"name": "AGND",
"type": "power_in",
"description": "Analog ground."
},
{
"number": "11",
"name": "VREF",
"type": "power_in",
"description": "Internal reference voltage, requires a 4.7uF capacitor to analog ground."
},
{
"number": "12",
"name": "LOUTL/P",
"type": "output",
"description": "Line output, left channel single-ended output or positive channel differential output."
},
{
"number": "13",
"name": "LOUTR/N",
"type": "output",
"description": "Line output, right channel single-ended output or negative channel differential output."
},
{
"number": "14",
"name": "CPN2",
"type": "passive",
"description": "Second charge pump bucket capacitor, 2.2uF capacitor to CPP2."
},
{
"number": "15",
"name": "CPP2",
"type": "passive",
"description": "Second charge pump bucket capacitor, 2.2uF capacitor to CPN2."
},
{
"number": "16",
"name": "CPN1",
"type": "passive",
"description": "First charge pump bucket capacitor, 2.2uF capacitor to CPP1."
},
{
"number": "17",
"name": "CPP1",
"type": "passive",
"description": "First charge pump bucket capacitor, 2.2uF capacitor to CPN1."
},
{
"number": "18",
"name": "CPVDD",
"type": "power_in",
"description": "Analog power for headphone charge pump, 1.71V to 1.9V (default 1.8V recommended)."
},
{
"number": "19",
"name": "CPVPP",
"type": "power_out",
"description": "Charge pump positive voltage output, 2.2uF capacitor to analog ground."
},
{
"number": "20",
"name": "CPVREF",
"type": "passive",
"description": "Headphone reference ground."
},
{
"number": "21",
"name": "HPO_R",
"type": "output",
"description": "Headphone amplifier output, right channel, analog output."
},
{
"number": "22",
"name": "CPVEE",
"type": "power_out",
"description": "Charge pump negative voltage output, 2.2uF capacitor to analog ground."
},
{
"number": "23",
"name": "HPO_L",
"type": "output",
"description": "Headphone amplifier output, left channel, analog output."
},
{
"number": "24",
"name": "PDM_SDA",
"type": "output",
"description": "PDM data output; can also be configured as GPIO or IRQ output. Output VOL = 0.1*DBVDD, VOH = 0.9*DBVDD."
},
{
"number": "25",
"name": "PDM_SCL",
"type": "output",
"description": "PDM clock output; can also be configured as GPIO or DMIC data input. Output VOL = 0.1*DBVDD, VOH = 0.9*DBVDD."
},
{
"number": "26",
"name": "ADCDAT2",
"type": "output",
"description": "Second I2S interface serial data output, VOL = 0.1*DBVDD, VOH = 0.9*DBVDD."
},
{
"number": "27",
"name": "DACDAT2",
"type": "input",
"description": "Second I2S interface serial data input with Schmitt trigger (VIL = 0.35*DBVDD, VIH = 0.65*DBVDD)."
},
{
"number": "28",
"name": "LRCK2",
"type": "bidirectional",
"description": "Second I2S interface synchronous signal; master output VOL/VOH = 0.1/0.9*DBVDD, slave Schmitt trigger input (VIL = 0.35*DBVDD, VIH = 0.65*DBVDD)."
},
{
"number": "29",
"name": "BCLK2",
"type": "bidirectional",
"description": "Second I2S interface serial bit clock; master output VOL/VOH = 0.1/0.9*DBVDD, slave Schmitt trigger input (VIL = 0.35*DBVDD, VIH = 0.65*DBVDD)."
},
{
"number": "30",
"name": "ADCDAT1",
"type": "output",
"description": "First I2S interface serial data output, VOL = 0.1*DBVDD, VOH = 0.9*DBVDD."
},
{
"number": "31",
"name": "DACDAT1",
"type": "input",
"description": "First I2S interface serial data input with Schmitt trigger (VIL = 0.35*DBVDD, VIH = 0.65*DBVDD)."
},
{
"number": "32",
"name": "LRCK1",
"type": "bidirectional",
"description": "First I2S interface synchronous signal; master output VOL/VOH = 0.1/0.9*DBVDD, slave Schmitt trigger input (VIL = 0.35*DBVDD, VIH = 0.65*DBVDD)."
},
{
"number": "33",
"name": "BCLK1",
"type": "bidirectional",
"description": "First I2S interface serial bit clock; master output VOL/VOH = 0.1/0.9*DBVDD, slave Schmitt trigger input (VIL = 0.35*DBVDD, VIH = 0.65*DBVDD)."
},
{
"number": "34",
"name": "MCLK",
"type": "input",
"description": "I2S interface master clock input with Schmitt trigger (VIL = 0.35*DBVDD, VIH = 0.65*DBVDD)."
},
{
"number": "35",
"name": "SCL",
"type": "input",
"description": "I2C interface clock input with Schmitt trigger."
},
{
"number": "36",
"name": "SDA",
"type": "bidirectional",
"description": "I2C interface serial data, open drain structure."
},
{
"number": "37",
"name": "GPIO1/IRQ",
"type": "bidirectional",
"description": "General purpose input/output, or interrupt output; output VOL = 0.1*DBVDD, VOH = 0.9*DBVDD, input Schmitt trigger."
},
{
"number": "38",
"name": "GPIO2/DMIC_SCL",
"type": "bidirectional",
"description": "General purpose input/output, or digital microphone clock output; output VOL = 0.1*DBVDD, VOH = 0.9*DBVDD, input Schmitt trigger."
},
{
"number": "39",
"name": "DBVDD",
"type": "power_in",
"description": "Digital power for digital I/O buffer, 1.71V to 3.3V (default 1.8V recommended)."
},
{
"number": "40",
"name": "DCVDD",
"type": "power_in",
"description": "Digital core power, 1.1V to 1.3V; may be left open to use internal LDO1 (default), or connected to external 1.2V when LDO1_EN is pulled low."
},
{
"number": "41",
"name": "CPGND/DGND",
"type": "power_in",
"description": "Charge pump ground and digital ground, Exposed-Pad."
}
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"Package": "QFN-40-EP(5x5)",
"Category": "Interface ICs",
"Pins": "41"
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{
"name": "Digital IO Buffer supply voltage",
"symbol": "DBVDD",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
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"max": 3.63,
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"name": "Digital Core supply voltage",
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"typ": null,
"max": 1.98,
"conditions": "",
"source_page": 125,
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{
"name": "Micbias supply voltage",
"symbol": "MICVDD",
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"min": -0.3,
"typ": null,
"max": 3.63,
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"source_page": 125,
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"min": 1.71,
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"max": 1.9,
"conditions": "",
"source_page": 125,
"source": "datasheet"
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{
"name": "Micbias supply voltage",
"symbol": "MICVDD",
"kind": "recommended_operating",
"unit": "V",
"min": 3,
"typ": 3.3,
"max": 3.6,
"conditions": "",
"source_page": 125,
"source": "datasheet"
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{
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"conditions": "DBVDD=1.8V, DCVDD=1.2V, Tambient=40C",
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{
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"source_page": 125,
"source": "datasheet"
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{
"name": "Output Buffer Low Drive Current",
"symbol": "",
"kind": "electrical",
"unit": "mA",
"min": 0.7,
"typ": 2.1,
"max": 4.8,
"conditions": "DBVDD=1.8V, DCVDD=1.2V, Tambient=40C",
"source_page": 125,
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{
"name": "Input Buffer Pull-Up Resistor",
"symbol": "",
"kind": "electrical",
"unit": "K",
"min": 55,
"typ": 110,
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"source_page": 125,
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"kind": "electrical",
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"min": null,
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"conditions": "Slave I2S Mode, 24-bit, SR: 44.1KHz; No Clock Input",
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"unit": "mW",
"min": null,
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"conditions": "Slave I2S Mode, 24-bit, SR: 44.1KHz; Stereo DAC to HP_OUT with 16 Ohm Load, With Clock, play silence",
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"min": null,
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"conditions": "Standard test conditions: Tambient=25C; DBVDD=1.8V; DCVDD=1.2V; AVDD=1.8V; MICVDD=3.3V; CPVDD=1.8V",
"source_page": 127,
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"min": null,
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"conditions": "Standard test conditions: Tambient=25C; DBVDD=1.8V; DCVDD=1.2V; AVDD=1.8V; MICVDD=3.3V; CPVDD=1.8V",
"source_page": 127,
"source": "datasheet"
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"alc5651-cg-hero.overlay.json",
"alc5651-cg-etched.glb"
],
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"public": true
}
}