CS5490-ISZ

{
  "slug": "cs5490-isz",
  "version": "0.1.0",
  "type": "component",
  "description": "Cirrus Logic Energy Metering ICs, SOIC-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "data converters",
    "cs5490-isz",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "cs5490-isz.kicad_sym",
    "cs5490-isz.kicad_mod",
    "cs5490-isz.glb",
    "cs5490-isz.step",
    "cs5490-isz.lbr",
    "docs/hero.png",
    "docs/cs5490-isz-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "cs5490-isz-hero.glb",
    "cs5490-isz-hero.overlay.json",
    "cs5490-isz-etched.glb"
  ],
  "component": {
    "mpn": "CS5490-ISZ",
    "manufacturer": "Cirrus Logic",
    "package": "SOIC-16",
    "pin_count": 16,
    "category": "Data Converters",
    "subcategory": "Energy Metering ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/c08764a33a28c8f80b6db7417bf44a51.pdf",
    "parts": {
      "symbol": "cs5490-isz.kicad_sym",
      "footprint": "cs5490-isz.kicad_mod",
      "model_3d": "cs5490-isz-hero.glb",
      "model_3d_plain": "cs5490-isz-etched.glb",
      "model_3d_step": "cs5490-isz-etched.step",
      "model_3d_step_plain": "cs5490-isz.step",
      "lbr": "cs5490-isz.lbr"
    },
    "distributor_links": {
      "lcsc": "C1519157",
      "digikey": "598-1928-ND",
      "mouser": "777-CS5490-ISZ"
    },
    "distributor_check": {
      "checked_at": "2026-10-30T22:41:27Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "598-1928-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "777-CS5490-ISZ",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "XOUT",
        "type": "passive",
        "description": "Crystal output for the external 4.096 MHz quartz crystal, which has an on-chip load capacitor; the datasheet says this pin is used for the crystal only."
      },
      {
        "number": "2",
        "name": "XIN",
        "type": "input",
        "description": "Crystal input for the external 4.096 MHz quartz crystal, or external clock input supplying the system clock (MCLK) to the device."
      },
      {
        "number": "3",
        "name": "RESET",
        "type": "input",
        "description": "Active-low Schmitt-trigger reset; assertion longer than 120 µs halts all operations and resets the hardware registers, and an external pull-up and decoupling capacitor are required."
      },
      {
        "number": "4",
        "name": "IIN-",
        "type": "passive",
        "description": "Negative differential analog input of the current channel; full-scale differential input is ±50 mV at 50x gain and ±250 mV at 10x gain."
      },
      {
        "number": "5",
        "name": "IIN+",
        "type": "passive",
        "description": "Positive differential analog input of the current channel; full-scale differential input is ±50 mV at 50x gain and ±250 mV at 10x gain."
      },
      {
        "number": "6",
        "name": "VIN+",
        "type": "power_in",
        "description": "Positive differential analog input of the voltage channel with fixed 10x gain; full-scale signal is ±250 mV."
      },
      {
        "number": "7",
        "name": "VIN-",
        "type": "power_in",
        "description": "Negative differential analog input of the voltage channel with fixed 10x gain; full-scale signal is ±250 mV."
      },
      {
        "number": "8",
        "name": "VREF-",
        "type": "power_in",
        "description": "Return pin of the on-chip 2.4 V voltage reference; a 0.1 µF filter capacitor must be connected between VREF+ and VREF- and nothing else should be connected to these pins."
      },
      {
        "number": "9",
        "name": "VREF+",
        "type": "power_in",
        "description": "Output of the on-chip 2.4 V voltage reference (limited drive capability); a 0.1 µF filter capacitor must be connected between VREF+ and VREF- and nothing else should be connected to these pins."
      },
      {
        "number": "10",
        "name": "GNDA",
        "type": "power_in",
        "description": "Analog ground; the common-mode input range of the differential inputs is referenced from GNDA to VDDA."
      },
      {
        "number": "11",
        "name": "VDDA",
        "type": "power_in",
        "description": "Positive analog supply, specified at 3.0 V to 3.6 V (3.3 V typical) with respect to GNDA."
      },
      {
        "number": "12",
        "name": "DO",
        "type": "output",
        "description": "Configurable digital output for energy pulses, interrupt, energy direction, or zero-crossing signals, with VOH of VDDA-0.3 V at 10 mA and VOL of 0.5 V max at 12 mA."
      },
      {
        "number": "13",
        "name": "TX",
        "type": "output",
        "description": "UART serial data output from the CS5490 to the host microcontroller (8-bit, LSB first, 10 bits per byte)."
      },
      {
        "number": "14",
        "name": "RX",
        "type": "input",
        "description": "UART serial data input to the CS5490 from the host microcontroller (8-bit, LSB first, 10 bits per byte)."
      },
      {
        "number": "15",
        "name": "MODE",
        "type": "input",
        "description": "Operating mode select that must be tied to VDDA for normal operation; it is used primarily for factory test procedures."
      },
      {
        "number": "16",
        "name": "VDDD",
        "type": "passive",
        "description": "Decoupling pin for the internal digital supply; it is not a supply input for external circuitry."
      }
    ],
    "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 pin table lists 'XIN, XOUT' as '2,1', and the pin diagram text is scrambled. I read XOUT=1 and X; VDDD is described only as a decoupling pin for the internal digital supply; the datasheet does not s; The datasheet gives VREF as a 2.4 V reference output with limited drive and says nothing else should",
          "2/16 pins cited to the wrong page (name found elsewhere): ['1:XOUT@p6', '2:XIN@p6']"
        ],
        "pages_sent": 16,
        "cost_usd": 0.0985,
        "at": "2026-10-30T22:41:05"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/c08764a33a28c8f80b6db7417bf44a51.pdf",
        "pages": 57,
        "sha256": "d104b02dede6c2ff",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "cs5490-isz.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          9.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "d5eeddb4c0b304dc61950919b126fc61d7586abd5f16ab71a2a79759ec6498bf",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cs5490-isz-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          9.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "95b1ac30f6c839a29f101243fef6cb88801f759978e56533bf7902df4bbb9bed",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "16 SOIC (150 MIL BODY)",
      "source_page": 56,
      "D": {
        "nom_mm": 9.9,
        "range_mm": [
          null,
          null
        ]
      },
      "E1": {
        "nom_mm": 3.9,
        "range_mm": [
          null,
          null
        ]
      },
      "E": {
        "nom_mm": 6.0,
        "range_mm": [
          null,
          null
        ]
      },
      "e": {
        "nom_mm": 1.27,
        "range_mm": [
          null,
          null
        ]
      },
      "A": {
        "nom_mm": 1.75,
        "range_mm": [
          null,
          1.75
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "cs5490-isz.step",
        "verdict": "PASS",
        "reasons": [
          "height and body within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  }
}