component
AK4438VN
Public Made by Adomby adom
Asahi Kasei Microdevices Audio Interface ICs, QFN-32-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": "ak4438vn",
"title": "AK4438VN",
"brief": "Asahi Kasei Microdevices Audio Interface ICs, QFN-32-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",
"ak4438vn",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "AK4438VN",
"manufacturer": "Asahi Kasei Microdevices",
"package": "QFN-32-EP(5x5)",
"pin_count": 33,
"category": "Interface ICs",
"subcategory": "Audio Interface ICs",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/ffa107bc986dd0ac4ffc7bdf4762135c.pdf",
"parts": {
"symbol": "ak4438vn.kicad_sym",
"footprint": "ak4438vn.kicad_mod",
"model_3d": "ak4438vn-hero.glb",
"model_3d_plain": "ak4438vn-etched.glb",
"model_3d_step": "ak4438vn-etched.step",
"model_3d_step_plain": "ak4438vn.step",
"lbr": "ak4438vn.lbr"
},
"distributor_links": {
"lcsc": "C2667054",
"digikey": "974-1161-2-ND",
"mouser": "412-AK4438VN"
},
"distributor_check": {
"checked_at": "2026-10-30T22:46:56Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "974-1161-2-ND",
"status": "found"
},
"mouser": {
"pn": "412-AK4438VN",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "MCLK",
"type": "input",
"description": "External master clock input pin, with supported ratios of 256fs to 768fs depending on the speed mode."
},
{
"number": "2",
"name": "BICK",
"type": "input",
"description": "Audio serial data clock pin."
},
{
"number": "3",
"name": "LRCK",
"type": "input",
"description": "Input channel clock pin."
},
{
"number": "4",
"name": "SDTI1",
"type": "input",
"description": "Audio serial data input pin for DAC channel 1; unused pins must be connected to VSS1."
},
{
"number": "5",
"name": "SDTI2",
"type": "input",
"description": "Audio serial data input pin for DAC channel 2; unused pins must be connected to VSS1."
},
{
"number": "6",
"name": "SDTI3",
"type": "input",
"description": "Audio serial data input pin for DAC channel 3; unused pins must be connected to VSS1."
},
{
"number": "7",
"name": "SDTI4",
"type": "input",
"description": "Audio serial data input pin for DAC channel 4; unused pins must be connected to VSS1."
},
{
"number": "8",
"name": "DZF",
"type": "output",
"description": "Zero input detect output that goes H when the input data is continuously zero for 8192 LRCK cycles, with polarity set by the DZFB bit."
},
{
"number": "9",
"name": "PDN",
"type": "input",
"description": "Power-down and reset pin; when L the AK4438 is powered down and the control registers are reset to default state."
},
{
"number": "10",
"name": "SMUTE/CAD1",
"type": "input",
"description": "In parallel control mode, H starts soft mute and returning to L releases the output mute; in I2C or 3-wire mode it is chip address 1."
},
{
"number": "11",
"name": "SDA/CDTI/TDM0",
"type": "bidirectional",
"description": "Serial data I/O in I2C mode, control data input in 3-wire mode, and TDM mode select 0 in parallel mode."
},
{
"number": "12",
"name": "SCL/CCLK/TDM1",
"type": "input",
"description": "Control data clock in I2C and 3-wire modes, and TDM mode select 1 in parallel mode."
},
{
"number": "13",
"name": "CAD0_I2C/CSN/DIF",
"type": "input",
"description": "Chip address 0 in I2C mode, chip select in 3-wire mode, and audio data format select in parallel mode (L: 32bit MSB, H: 32bit I2S)."
},
{
"number": "14",
"name": "PS/CAD0_SPI",
"type": "input",
"description": "With the I2C pin H, selects I2C (L) or parallel control (H); with the I2C pin L, it is chip address 0 in 3-wire mode."
},
{
"number": "15",
"name": "AOUTL1",
"type": "output",
"description": "Lch analog output pin for DAC 1; leave open when unused."
},
{
"number": "16",
"name": "AOUTR1",
"type": "output",
"description": "Rch analog output pin for DAC 1; leave open when unused."
},
{
"number": "17",
"name": "AOUTL2",
"type": "output",
"description": "Lch analog output pin for DAC 2; leave open when unused."
},
{
"number": "18",
"name": "AOUTR2",
"type": "output",
"description": "Rch analog output pin for DAC 2; leave open when unused."
},
{
"number": "19",
"name": "VREFH",
"type": "passive",
"description": "Positive voltage reference input pin, normally connected to AVDD, which sets the analog output range."
},
{
"number": "20",
"name": "VREFL",
"type": "passive",
"description": "Negative voltage reference input pin, which must be connected to VSS2."
},
{
"number": "21",
"name": "VCOM",
"type": "output",
"description": "Common voltage output at AVDD x 1/2 that requires an external capacitor of about 2.2uF and must not draw load current."
},
{
"number": "22",
"name": "VSS2",
"type": "power_in",
"description": "Analog ground pin that must be connected to the same analog ground plane as VSS1."
},
{
"number": "23",
"name": "AVDD",
"type": "power_in",
"description": "Analog power supply pin, 3.0V to 3.6V."
},
{
"number": "24",
"name": "AOUTL3",
"type": "output",
"description": "Lch analog output pin for DAC 3; leave open when unused."
},
{
"number": "25",
"name": "AOUTR3",
"type": "output",
"description": "Rch analog output pin for DAC 3; leave open when unused."
},
{
"number": "26",
"name": "AOUTL4",
"type": "output",
"description": "Lch analog output pin for DAC 4; leave open when unused."
},
{
"number": "27",
"name": "AOUTR4",
"type": "output",
"description": "Rch analog output pin for DAC 4; leave open when unused."
},
{
"number": "28",
"name": "TEST",
"type": "passive",
"description": "Test pin that must be connected to VSS1."
},
{
"number": "29",
"name": "I2C",
"type": "input",
"description": "Control mode select pin: L selects 3-wire serial control, H selects I2C bus or parallel control."
},
{
"number": "30",
"name": "TVDD",
"type": "power_in",
"description": "Digital power supply pin, 1.7V to 3.6V."
},
{
"number": "31",
"name": "VSS1",
"type": "power_in",
"description": "Digital ground pin that must be connected to the same analog ground plane as VSS2."
},
{
"number": "32",
"name": "LDOO",
"type": "output",
"description": "LDO output pin producing 1.2V for the internal digital circuit, which must be connected to ground through 2.2uF +/-50%."
},
{
"number": "33",
"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": {
"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: The datasheet gives the package as 32-pin QFN (0.5mm pitch) and the ordering guide lists AK4438VN in"
],
"pages_sent": 25,
"cost_usd": 0.0341,
"at": "2026-10-30T22:46:47"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/ffa107bc986dd0ac4ffc7bdf4762135c.pdf",
"pages": 63,
"sha256": "bbe6752337c63e2b",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 33,
"described": 33,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
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"footprint": "viewers/footprint.html"
},
"models_3d": [
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"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
5,
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0.875
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "5fa713ea46b36980895812ed853577889b7cb06d275041a39b99bc0be305dc79",
"checked": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "ak4438vn-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
5,
5,
0.875
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"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "11f8532dc1f593f06137b0717324299cf64b72e7747855f65a89549976167ec0",
"checked": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "Asahi Kasei Microdevices",
"Package": "QFN-32-EP(5x5)",
"Category": "Interface ICs",
"Pins": "33"
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
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],
"discovery_pitch": "AK4438VN (Asahi Kasei Microdevices) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
"author": {
"name": "Ray",
"email": "[email protected]"
},
"dependencies": {},
"hero": {
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"path": "docs/hero.png"
},
"files": [
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"ak4438vn.lbr",
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"docs/ak4438vn-datasheet.pdf",
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"visibility": {
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}