AD8232ACPZ-R7

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  "slug": "ad8232acpz-r7",
  "title": "AD8232ACPZ-R7",
  "brief": "Analog Devices Analog To Digital Converters (ADC), LFCSP-20(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
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    "data acquisition",
    "ad8232acpz-r7",
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  "component": {
    "mpn": "AD8232ACPZ-R7",
    "manufacturer": "Analog Devices",
    "package": "LFCSP-20(4x4)",
    "pin_count": 21,
    "category": "Data Acquisition",
    "subcategory": "Analog To Digital Converters (ADC)",
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    "distributor_links": {
      "lcsc": "C43216",
      "digikey": "505-AD8232ACPZ-R7TR-ND"
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    "pins": [
      {
        "number": "1",
        "name": "HPDRIVE",
        "type": "output",
        "description": "High-pass driver output that connects to the capacitor of the first high-pass filter, driven by the AD8232 to keep HPSENSE at the reference voltage."
      },
      {
        "number": "2",
        "name": "+IN",
        "type": "input",
        "description": "Instrumentation amplifier positive input, typically connected to the left arm (LA) electrode."
      },
      {
        "number": "3",
        "name": "-IN",
        "type": "input",
        "description": "Instrumentation amplifier negative input, typically connected to the right arm (RA) electrode."
      },
      {
        "number": "4",
        "name": "RLDFB",
        "type": "input",
        "description": "Right leg drive feedback input, the feedback terminal for the right leg drive circuit."
      },
      {
        "number": "5",
        "name": "RLD",
        "type": "output",
        "description": "Right leg drive output, to which the driven electrode (typically the right leg) is connected."
      },
      {
        "number": "6",
        "name": "SW",
        "type": "passive",
        "description": "Fast restore switch terminal, connected to the output of the second high-pass filter."
      },
      {
        "number": "7",
        "name": "OPAMP+",
        "type": "input",
        "description": "Operational amplifier noninverting input."
      },
      {
        "number": "8",
        "name": "REFOUT",
        "type": "output",
        "description": "Reference buffer output that serves as the signal reference (virtual ground) for the instrumentation amplifier output and any circuit point needing a reference."
      },
      {
        "number": "9",
        "name": "OPAMP-",
        "type": "input",
        "description": "Operational amplifier inverting input."
      },
      {
        "number": "10",
        "name": "OUT",
        "type": "output",
        "description": "Operational amplifier output carrying the fully conditioned heart rate signal, which can drive an ADC input."
      },
      {
        "number": "11",
        "name": "LOD-",
        "type": "output",
        "description": "Leads off comparator output: in dc leads off mode it is high when the -IN electrode is disconnected and low when connected, and in ac leads off mode it is always low."
      },
      {
        "number": "12",
        "name": "LOD+",
        "type": "output",
        "description": "Leads off comparator output: in dc leads off mode it is high when the +IN electrode is disconnected, and in ac leads off mode it is high when either -IN or +IN is disconnected and low only when both are connected."
      },
      {
        "number": "13",
        "name": "SDN",
        "type": "input",
        "description": "Shutdown control input; driving SDN low enters the low power shutdown mode."
      },
      {
        "number": "14",
        "name": "AC/DC",
        "type": "input",
        "description": "Leads off mode control input; low selects dc leads off mode and high selects ac leads off mode."
      },
      {
        "number": "15",
        "name": "FR",
        "type": "input",
        "description": "Fast restore control input; high enables fast recovery mode, otherwise drive low."
      },
      {
        "number": "16",
        "name": "GND",
        "type": "power_in",
        "description": "Power supply ground."
      },
      {
        "number": "17",
        "name": "+VS",
        "type": "power_in",
        "description": "Power supply terminal; single-supply operation from 2.0 V to 3.5 V per the features list."
      },
      {
        "number": "18",
        "name": "REFIN",
        "type": "input",
        "description": "Reference buffer input, a high impedance terminal used to set the level of the reference buffer."
      },
      {
        "number": "19",
        "name": "IAOUT",
        "type": "output",
        "description": "Instrumentation amplifier output terminal."
      },
      {
        "number": "20",
        "name": "HPSENSE",
        "type": "input",
        "description": "High-pass sense input for the instrumentation amplifier, connected to the junction of the R and C that sets the dc blocking corner frequency."
      },
      {
        "number": "21",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
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        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
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          "exposed pad 21 added from the footprint",
          "dropped thermal pad ['EP'] absent from footprint"
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      "Manufacturer": "Analog Devices",
      "Package": "LFCSP-20(4x4)",
      "Category": "Data Acquisition",
      "Pins": "21"
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