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AK4438VN

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Asahi Kasei Microdevices Audio Interface ICs, QFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentinterface icsak4438vnfactory-2.0.0extractor-text

Verified AK4438VN

by Ray · last 30 Oct 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

30 Oct 2026RayPublished by the parts factory: tier lcsc, 33 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: AK4438VN · QFN-32-EP(5x5) · 33 pins
  • ✓copper: 33 copper pads, none touching another net
  • ✓datasheet: all 33 pin names found in the 63-page datasheet
  • ✓distributor: lcsc C2667054, digikey 974-1161-2-ND, mouser 412-AK4438VN
  • ✓family: QFN-32-1EP_5x5mm_P0.5mm_EP3.3x3.3mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-r4bq5_oj/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 33 pins = 33 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 33 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ ak4438vn.kicad_sym✓ ak4438vn.kicad_mod✓ ak4438vn.step
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Contents

README

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AK4438VN

Asahi Kasei Microdevices · Audio Interface ICs · QFN-32-EP(5x5)

AK4438VN from Asahi Kasei Microdevices, in a QFN-32-EP(5x5). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 MCLK input External master clock input pin, with supported ratios of 256fs to 768fs depending on the speed mode.
2 BICK input Audio serial data clock pin.
3 LRCK input Input channel clock pin.
4 SDTI1 input Audio serial data input pin for DAC channel 1; unused pins must be connected to VSS1.
5 SDTI2 input Audio serial data input pin for DAC channel 2; unused pins must be connected to VSS1.
6 SDTI3 input Audio serial data input pin for DAC channel 3; unused pins must be connected to VSS1.
7 SDTI4 input Audio serial data input pin for DAC channel 4; unused pins must be connected to VSS1.
8 DZF output 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.
9 PDN input Power-down and reset pin; when L the AK4438 is powered down and the control registers are reset to default state.
10 SMUTE/CAD1 input 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.
11 SDA/CDTI/TDM0 bidirectional Serial data I/O in I2C mode, control data input in 3-wire mode, and TDM mode select 0 in parallel mode.
12 SCL/CCLK/TDM1 input Control data clock in I2C and 3-wire modes, and TDM mode select 1 in parallel mode.
13 CAD0_I2C/CSN/DIF input 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).
14 PS/CAD0_SPI input 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.
15 AOUTL1 output Lch analog output pin for DAC 1; leave open when unused.
16 AOUTR1 output Rch analog output pin for DAC 1; leave open when unused.
17 AOUTL2 output Lch analog output pin for DAC 2; leave open when unused.
18 AOUTR2 output Rch analog output pin for DAC 2; leave open when unused.
19 VREFH passive Positive voltage reference input pin, normally connected to AVDD, which sets the analog output range.
20 VREFL passive Negative voltage reference input pin, which must be connected to VSS2.
21 VCOM output Common voltage output at AVDD x 1/2 that requires an external capacitor of about 2.2uF and must not draw load current.
22 VSS2 power_in Analog ground pin that must be connected to the same analog ground plane as VSS1.
23 AVDD power_in Analog power supply pin, 3.0V to 3.6V.
24 AOUTL3 output Lch analog output pin for DAC 3; leave open when unused.
25 AOUTR3 output Rch analog output pin for DAC 3; leave open when unused.
26 AOUTL4 output Lch analog output pin for DAC 4; leave open when unused.
27 AOUTR4 output Rch analog output pin for DAC 4; leave open when unused.
28 TEST passive Test pin that must be connected to VSS1.
29 I2C input Control mode select pin: L selects 3-wire serial control, H selects I2C bus or parallel control.
30 TVDD power_in Digital power supply pin, 1.7V to 3.6V.
31 VSS1 power_in Digital ground pin that must be connected to the same analog ground plane as VSS2.
32 LDOO output LDO output pin producing 1.2V for the internal digital circuit, which must be connected to ground through 2.2uF +/-50%.
33 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer Asahi Kasei Microdevices
Package QFN-32-EP(5x5)
Category Interface ICs
Pins 33

CAD (KiCad official)

  • Symbol: AK4438VN
  • Footprint: Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.3x3.3mm
  • 3D model: QFN-32-EP(5x5) (KiCad packages3D, STEP)
  • 3D model files: ak4438vn-etched.step / ak4438vn-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ak4438vn.step / ak4438vn.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Asahi Kasei Microdevices datasheet (63 pp, sha256 bbe6752337c63e2b, retrieved 2026-10-30, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF