AK7735EQ

{
  "slug": "ak7735eq",
  "version": "0.1.0",
  "type": "component",
  "description": "Asahi Kasei Microdevices Audio Interface ICs, LQFP-48(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "interface ics",
    "ak7735eq",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ak7735eq.kicad_sym",
    "ak7735eq.kicad_mod",
    "ak7735eq.glb",
    "ak7735eq.step",
    "ak7735eq.lbr",
    "docs/hero.png",
    "docs/ak7735eq-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ak7735eq-hero.glb",
    "ak7735eq-hero.overlay.json",
    "ak7735eq-etched.glb"
  ],
  "component": {
    "mpn": "AK7735EQ",
    "manufacturer": "Asahi Kasei Microdevices",
    "package": "LQFP-48(7x7)",
    "pin_count": 48,
    "category": "Interface ICs",
    "subcategory": "Audio Interface ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/a4c659373aee2a27a6103f0ce35bb3cc.pdf",
    "parts": {
      "symbol": "ak7735eq.kicad_sym",
      "footprint": "ak7735eq.kicad_mod",
      "model_3d": "ak7735eq-hero.glb",
      "model_3d_plain": "ak7735eq-etched.glb",
      "model_3d_step": "ak7735eq-etched.step",
      "model_3d_step_plain": "ak7735eq.step",
      "lbr": "ak7735eq.lbr"
    },
    "distributor_links": {
      "lcsc": "C2651820",
      "digikey": "974-1152-2-ND"
    },
    "distributor_check": {
      "checked_at": "2026-10-30T23:41:16Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "974-1152-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "AOUT2R",
        "type": "output",
        "description": "DAC2 Rch analog output; it outputs Hi-Z during power-down, and the pin is supplied from AVDD."
      },
      {
        "number": "2",
        "name": "AOUT2L",
        "type": "output",
        "description": "DAC2 Lch analog output; it outputs Hi-Z during power-down, and the pin is supplied from AVDD."
      },
      {
        "number": "3",
        "name": "TESTI",
        "type": "input",
        "description": "Test input pin that must be tied low."
      },
      {
        "number": "4",
        "name": "LRCK3",
        "type": "bidirectional",
        "description": "LR channel select clock 3 pin (I/O), referenced to VDD33."
      },
      {
        "number": "5",
        "name": "SDOUT4/GPO2",
        "type": "output",
        "description": "Serial data output 4 pin, or GPO output 2 of DSP2 when selected by DO4SEL; it is pulled down and outputs low in power-down."
      },
      {
        "number": "6",
        "name": "BICK3",
        "type": "bidirectional",
        "description": "Serial bit clock 3 pin (I/O), referenced to VDD33."
      },
      {
        "number": "7",
        "name": "SDOUT3/CLKO/GPO1",
        "type": "output",
        "description": "Serial data output 3 pin, or master clock output (CLKO) or GPO output 1 of DSP1 when selected by DO3SEL; it is pulled down and outputs low in power-down."
      },
      {
        "number": "8",
        "name": "SDIN3/JX3",
        "type": "input",
        "description": "Serial data input 3 pin, or external conditional jump input 3 when selected by DI3SEL; maximum input voltage is the smaller of (VDD33+0.3)V and 4.3V."
      },
      {
        "number": "9",
        "name": "SDIN4",
        "type": "input",
        "description": "Serial data input 4 pin; maximum input voltage is the smaller of (VDD33+0.3)V and 4.3V."
      },
      {
        "number": "10",
        "name": "DVSS1",
        "type": "power_in",
        "description": "Digital ground 1 pin at 0 V; must be connected to the same ground as AVSS and DVSS2/DVSS3."
      },
      {
        "number": "11",
        "name": "VDD33",
        "type": "power_in",
        "description": "Digital I/F power supply pin, 3.0 to 3.6 V (typ. 3.3 V)."
      },
      {
        "number": "12",
        "name": "XTI",
        "type": "input",
        "description": "Crystal oscillator input pin; connect the crystal between XTI and XTO, or leave open when not used."
      },
      {
        "number": "13",
        "name": "XTO",
        "type": "output",
        "description": "Crystal oscillator output pin; connect the crystal between XTI and XTO, or leave open when no crystal is used."
      },
      {
        "number": "14",
        "name": "SDIN2/JX0",
        "type": "input",
        "description": "Serial data input 2 pin, or external conditional jump input 0 when selected by DI2SEL; referenced to TVDD."
      },
      {
        "number": "15",
        "name": "LRCK2/JX1",
        "type": "bidirectional",
        "description": "LR channel select clock 2 pin (I/O), or external conditional jump input 1 when selected by LCK2SEL (requires MSN2 = 0); referenced to TVDD."
      },
      {
        "number": "16",
        "name": "BICK2/JX2",
        "type": "bidirectional",
        "description": "Serial bit clock 2 pin (I/O), or external conditional jump input 2 when selected by BCK2SEL (requires MSN2 = 0); referenced to TVDD."
      },
      {
        "number": "17",
        "name": "SDIN1",
        "type": "input",
        "description": "Serial data input 1 pin; referenced to TVDD."
      },
      {
        "number": "18",
        "name": "LRCK1",
        "type": "bidirectional",
        "description": "LR channel select clock 1 pin (I/O); referenced to TVDD."
      },
      {
        "number": "19",
        "name": "BICK1",
        "type": "bidirectional",
        "description": "Serial bit clock 1 pin (I/O); referenced to TVDD."
      },
      {
        "number": "20",
        "name": "SDOUT1/RDY",
        "type": "output",
        "description": "Serial data output 1 pin, or RDY signal output when selected by DO1SEL; it is pulled down and outputs low in power-down."
      },
      {
        "number": "21",
        "name": "TVDD",
        "type": "power_in",
        "description": "Digital I/F power supply pin, 1.7 to 3.6 V (typ. 3.3 V)."
      },
      {
        "number": "22",
        "name": "DVSS2",
        "type": "power_in",
        "description": "Digital ground 2 pin at 0 V; must be connected to the same ground as the other ground pins."
      },
      {
        "number": "23",
        "name": "STO/RDY/SDOUT2",
        "type": "output",
        "description": "Status output pin (STO, output low in power-down), or RDY signal output, or SDOUT2 serial data output depending on DO2SEL; it is pulled down in power-down."
      },
      {
        "number": "24",
        "name": "CSN",
        "type": "input",
        "description": "SPI chip select pin, to be held high during power-down or when SPI is not used; in I2C mode it is the chip address pin and must be pulled up or pulled down."
      },
      {
        "number": "25",
        "name": "SO/SDA",
        "type": "bidirectional",
        "description": "Serial data output pin for SPI (must be pulled up or down in SPI mode, Hi-Z in power-down), or serial data I/O for I2C; referenced to TVDD."
      },
      {
        "number": "26",
        "name": "SCLK/SCL",
        "type": "input",
        "description": "Serial data clock input pin for SPI, or serial clock input for I2C; referenced to TVDD."
      },
      {
        "number": "27",
        "name": "SI/I2CFIL",
        "type": "input",
        "description": "Serial data input pin for SPI, or I2C mode select input in I2C mode (L = Fast Mode 400 kHz, H = Fast Mode Plus 1 MHz, which should be fixed to TVDD2 as printed); referenced to TVDD."
      },
      {
        "number": "28",
        "name": "PDN",
        "type": "input",
        "description": "Power-down pin that must be held low while power is supplied and may be set high only after all power supplies are applied and settled; referenced to TVDD."
      },
      {
        "number": "29",
        "name": "AVDRV",
        "type": "output",
        "description": "VREG output pin; connect a 2.2 uF (±30%) ceramic capacitor between this pin and DVSS3, and do not connect it to an external circuit."
      },
      {
        "number": "30",
        "name": "DVSS3",
        "type": "power_in",
        "description": "Digital ground 3 pin at 0 V; must be connected to the same ground as the other ground pins."
      },
      {
        "number": "31",
        "name": "LVDD",
        "type": "power_in",
        "description": "Digital core power supply pin, 3.0 to 3.6 V (typ. 3.3 V)."
      },
      {
        "number": "32",
        "name": "AIN2RN/AIN4R",
        "type": "input",
        "description": "ADC2 Rch inverted differential input 2, or ADC2 Rch single-ended input 4; referenced to AVDD."
      },
      {
        "number": "33",
        "name": "AIN2RP/AIN3R",
        "type": "input",
        "description": "ADC2 Rch non-inverted differential input 2, or ADC2 Rch single-ended input 3; referenced to AVDD."
      },
      {
        "number": "34",
        "name": "AIN2LN/AIN4L",
        "type": "input",
        "description": "ADC2 Lch inverted differential input 2, or ADC2 Lch single-ended input 4; referenced to AVDD."
      },
      {
        "number": "35",
        "name": "AIN2LP/AIN3L",
        "type": "input",
        "description": "ADC2 Lch non-inverted differential input 2, or ADC2 Lch single-ended input 3; referenced to AVDD."
      },
      {
        "number": "36",
        "name": "INN2",
        "type": "input",
        "description": "ADC1 Rch inverted differential input 2; referenced to AVDD."
      },
      {
        "number": "37",
        "name": "AIN1R/INP2",
        "type": "input",
        "description": "ADC1 Rch single-ended input 1, or ADC1 Rch non-inverted differential input 2; referenced to AVDD."
      },
      {
        "number": "38",
        "name": "INN1",
        "type": "input",
        "description": "ADC1 Lch inverted differential input 1; referenced to AVDD."
      },
      {
        "number": "39",
        "name": "AIN1L/INP1",
        "type": "input",
        "description": "ADC1 Lch single-ended input 1, or ADC1 Lch non-inverted differential input 1; referenced to AVDD."
      },
      {
        "number": "40",
        "name": "MPREF",
        "type": "output",
        "description": "Ripple filter pin for the microphone power supply; connect a 1 uF ceramic capacitor between this pin and AVSS, and do not connect it to an external circuit."
      },
      {
        "number": "41",
        "name": "MPWR",
        "type": "output",
        "description": "Power supply output pin for the microphone, which outputs Hi-Z during power-down."
      },
      {
        "number": "42",
        "name": "AVDD",
        "type": "power_in",
        "description": "Analog power supply pin, 3.0 to 3.6 V (typ. 3.3 V)."
      },
      {
        "number": "43",
        "name": "AVSS",
        "type": "power_in",
        "description": "Analog ground pin at 0 V; must be connected to the same ground as DVSS1/DVSS2/DVSS3."
      },
      {
        "number": "44",
        "name": "VCOM",
        "type": "output",
        "description": "Analog common voltage output pin (AVDD/2); connect a 2.2 uF ceramic capacitor between this pin and AVSS, do not connect it to an external circuit, and it outputs low in power-down."
      },
      {
        "number": "45",
        "name": "VREFH",
        "type": "input",
        "description": "Analog high-level reference voltage input pin that must be connected to AVDD."
      },
      {
        "number": "46",
        "name": "VREFL",
        "type": "input",
        "description": "Analog low-level reference voltage input pin that must be connected to AVSS."
      },
      {
        "number": "47",
        "name": "AOUT1R",
        "type": "output",
        "description": "DAC1 Rch analog output pin, which outputs Hi-Z during power-down."
      },
      {
        "number": "48",
        "name": "AOUT1L",
        "type": "output",
        "description": "DAC1 Lch analog output pin, which outputs Hi-Z during power-down."
      }
    ],
    "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: These pins are multiplexed with GPO, CLKO, RDY or SDOUT functions selected by control registers; the; These pins are multiplexed with JX (conditional jump) inputs or serial data inputs; the type given i; Pin 25 is SO (SPI output) or SDA (I2C I/O) depending on the interface; it is typed as bidirectional "
        ],
        "pages_sent": 38,
        "cost_usd": 0.1671,
        "at": "2026-10-30T23:41:05"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/a4c659373aee2a27a6103f0ce35bb3cc.pdf",
        "pages": 142,
        "sha256": "2ca2c4f05a8540c6",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 48,
        "described": 48,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ak7735eq.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          9.0,
          9.0,
          1.5
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "9dea352d93177c2904afd7d7b68ea8855ce1ab691f69f8b3e13655600514b6bf",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ak7735eq-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          9.0,
          9.0,
          1.5
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "f402b341f428215643cccdef49f47e50a39a594b5e1213ae77fdee2a5bfc2473",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "LQFP-48",
      "source_page": 141,
      "e": {
        "nom_mm": 0.5,
        "range_mm": [
          null,
          null
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "ak7735eq.step",
        "verdict": "SKIP",
        "reasons": [
          "the datasheet dimensions give no height or body size to compare"
        ],
        "by": "factory/package_fit.py"
      }
    }
  }
}