CS1259B-SOP16

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  "slug": "cs1259b-sop16",
  "title": "CS1259B-SOP16",
  "brief": "CHIPSEA Analog To Digital Converters (ADC), SOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
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  "component": {
    "mpn": "CS1259B-SOP16",
    "manufacturer": "CHIPSEA",
    "package": "SOP-16",
    "pin_count": 16,
    "category": "Data Acquisition",
    "subcategory": "Analog To Digital Converters (ADC)",
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    "distributor_links": {
      "lcsc": "C2833379"
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    "distributor_check": {
      "checked_at": "2026-10-18T15:26:04Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
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      "mouser": {
        "pn": null,
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    },
    "pins": [
      {
        "number": "1",
        "name": "REFN",
        "type": "input",
        "description": "Negative reference voltage input; for single-ended measurements it should be connected to GND."
      },
      {
        "number": "2",
        "name": "AIN0",
        "type": "input",
        "description": "Analog signal input channel 0, usable single-ended against REFN or combined with another AINx into a differential pair."
      },
      {
        "number": "3",
        "name": "AIN1",
        "type": "input",
        "description": "Analog signal input channel 1, usable single-ended against REFN or combined with another AINx into a differential pair."
      },
      {
        "number": "4",
        "name": "CIP",
        "type": "bidirectional",
        "description": "Positive terminal of the analog signal filter port, used to connect an external RC filter when EXFIL_EN is enabled."
      },
      {
        "number": "5",
        "name": "CIN",
        "type": "bidirectional",
        "description": "Negative terminal of the analog signal filter port, used to connect an external RC filter when EXFIL_EN is enabled."
      },
      {
        "number": "6",
        "name": "AIN4",
        "type": "input",
        "description": "Analog signal input channel 4, usable single-ended against REFN or combined with another AINx into a differential pair."
      },
      {
        "number": "7",
        "name": "AIN3",
        "type": "input",
        "description": "Analog signal input channel 3, usable single-ended against REFN or combined with another AINx into a differential pair."
      },
      {
        "number": "8",
        "name": "AIN2",
        "type": "input",
        "description": "Analog signal input channel 2, usable single-ended against REFN or combined with another AINx into a differential pair."
      },
      {
        "number": "9",
        "name": "CS",
        "type": "input",
        "description": "Serial interface chip-select, active low; the pin is internally floating so an external pull-up is recommended."
      },
      {
        "number": "10",
        "name": "SCLK",
        "type": "input",
        "description": "Serial communication clock input; SDA data is shifted out on the rising edge and sampled on the falling edge of SCLK."
      },
      {
        "number": "11",
        "name": "SDA",
        "type": "bidirectional",
        "description": "Serial data input/output; when CS is high it outputs DRDY to flag conversion data ready, and when CS is low it carries serial communication data."
      },
      {
        "number": "12",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "13",
        "name": "VDD",
        "type": "power_in",
        "description": "Supply voltage, 2.4 V to 3.6 V (3.0 V typical) per the electrical characteristics; absolute maximum is -0.3 V to 6 V."
      },
      {
        "number": "14",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "15",
        "name": "VS",
        "type": "power_in",
        "description": "Internal LDO output that powers the external bridge sensor and internal ADC, selectable via LDOS[1:0] and rated for a load current up to 10 mA."
      },
      {
        "number": "16",
        "name": "REFP",
        "type": "input",
        "description": "Positive reference voltage input; the ADC reference is REFP minus REFN, with REFP specified from VS/2 to VDD+0.1 V."
      }
    ],
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      "extractor": "extract_pins 0.3",
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        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
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        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: LDO output voltage options conflict within the datasheet: section 3.5 lists 2.4/2.6/2.8/3.0 V, while; The datasheet text writes CS with an overline (active low) that did not survive text extraction; act; Two GND pins are listed in the SOP16 pin table; both are ground and are reported as printed."
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        "pages_sent": 27,
        "cost_usd": 0.1112,
        "at": "2026-10-18T15:23:57"
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        "described": 16,
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  "metadata": {
    "specs": {
      "Manufacturer": "CHIPSEA",
      "Package": "SOP-16",
      "Category": "Data Acquisition",
      "Pins": "16"
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          "name": "Operating temperature",
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          "name": "Lead temperature (soldering)",
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          "name": "Data rate",
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          "name": "Offset error, Gain=128",
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          "name": "Offset error drift, Gain=128",
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          "name": "VREF voltage",
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        {
          "name": "Supply/timing t3: SCLK low before CS falling",
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          "name": "SCLK low after CS rising",
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        {
          "name": "SDA data setup before SCLK rising",
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          "name": "SDO stable after SCLK rising",
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          "name": "SCLK high width",
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          "name": "SCLK low width",
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          "name": "Power down current, ADC",
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          "name": "Power down current, digital",
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          "conditions": "Power down",
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        {
          "name": "Differential input impedance",
          "symbol": "",
          "kind": "electrical",
          "unit": "MΩ",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "PGA Buffer on",
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        {
          "name": "Resolution",
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        {
          "name": "Settling time",
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          "kind": "timing",
          "unit": "转换周期",
          "min": null,
          "typ": 4,
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          "name": "Noise, Gain=32×2",
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          "name": "Noise, Gain=1×1",
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          "name": "Integral linearity",
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          "name": "Offset error drift, Gain=1",
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          "name": "Gain error drift, Gain=128",
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          "name": "VS temperature drift",
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          "name": "VREF temperature drift",
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          "name": "Clock frequency",
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          "typ": 5.898,
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          "name": "Clock trim accuracy",
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          "name": "Clock frequency variation over temperature",
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          "kind": "electrical",
          "unit": "%",
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          "name": "Clock frequency variation over supply voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
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          "source_page": 10,
          "source": "datasheet"
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          "name": "Input high leakage current",
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          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 1,
          "max": null,
          "conditions": "VI=VDD",
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          "name": "Input low leakage current",
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          "kind": "electrical",
          "unit": "uA",
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          "typ": -1,
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          "name": "ADC operating current, normal mode",
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          "kind": "electrical",
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          "source_page": 10,
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        {
          "name": "ADC operating current, performance mode",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
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          "typ": 1.1,
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          "conditions": "性能模式",
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          "name": "LDO operating current",
          "symbol": "",
          "kind": "electrical",
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          "max": null,
          "conditions": "",
          "source_page": 10,
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        {
          "name": "VREF operating current, temperature compensation started",
          "symbol": "",
          "kind": "electrical",
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          "typ": 280,
          "max": null,
          "conditions": "启动温度补偿",
          "source_page": 10,
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        {
          "name": "VREF operating current, temperature compensation not started",
          "symbol": "",
          "kind": "electrical",
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          "conditions": "不启动温度补偿",
          "source_page": 10,
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          "name": "OSC operating current",
          "symbol": "",
          "kind": "electrical",
          "unit": "uA",
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          "typ": 78,
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          "conditions": "Freq=5.898MHz",
          "source_page": 10,
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        {
          "name": "Digital operating current",
          "symbol": "",
          "kind": "electrical",
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          "conditions": "正常工作",
          "source_page": 10,
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