MICRF220AYQS-TR

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  "slug": "micrf220ayqs-tr",
  "title": "MICRF220AYQS-TR",
  "brief": "Microchip Tech RF Transceiver ICs, QSOP-16-150mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
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  "component": {
    "mpn": "MICRF220AYQS-TR",
    "manufacturer": "Microchip Tech",
    "package": "QSOP-16-150mil",
    "pin_count": 16,
    "category": "Radio Frequency Chip/Antenna",
    "subcategory": "RF Transceiver ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/a141d580e75e18f5ae2cc4c8b227ccb6.pdf",
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    "distributor_links": {
      "lcsc": "C510897",
      "digikey": "MICRF220AYQS-TR-ND",
      "mouser": "998-MICRF220AYQSTR"
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    },
    "pins": [
      {
        "number": "1",
        "name": "RO1",
        "type": "passive",
        "description": "Reference resonator connection to the Pierce oscillator, may also be driven by an external reference of 200mVp-p to 1.5Vp-p maximum, with 7pF internal capacitance to GND in normal operation."
      },
      {
        "number": "2",
        "name": "GNDRF",
        "type": "power_in",
        "description": "Ground connection for the ANT RF input, connect to PCB ground plane."
      },
      {
        "number": "3",
        "name": "ANT",
        "type": "input",
        "description": "Internally AC-coupled RF signal input from the antenna; a matching network with an inductor to RF ground is recommended to improve ESD protection."
      },
      {
        "number": "4",
        "name": "GNDRF",
        "type": "power_in",
        "description": "Ground connection for the ANT RF input, connect to PCB ground plane."
      },
      {
        "number": "5",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive supply for all chip functions (3.0V to 3.6V), bypass with 0.1µF capacitor as close to the pin as possible."
      },
      {
        "number": "6",
        "name": "SQ",
        "type": "input",
        "description": "Squelch control logic-level input with 5µA typical internal pull-up; a logic LOW reduces random activity on DO when there is no RF input signal."
      },
      {
        "number": "7",
        "name": "SEL0",
        "type": "input",
        "description": "Demodulator filter bandwidth select logic input with 3µA typical internal pull-up, used together with SEL1."
      },
      {
        "number": "8",
        "name": "SHDN",
        "type": "input",
        "description": "Shutdown control logic input with 5µA typical internal pull-up; LOW enables the device and HIGH places it in low-power shutdown."
      },
      {
        "number": "9",
        "name": "GND",
        "type": "power_in",
        "description": "Ground connection for all chip functions except the RF input, connect to PCB ground plane."
      },
      {
        "number": "10",
        "name": "DO",
        "type": "output",
        "description": "Demodulated data output, current-limited CMOS output in normal operation with a 25kΩ pull-down in shutdown."
      },
      {
        "number": "11",
        "name": "SEL1",
        "type": "input",
        "description": "Demodulator filter bandwidth select logic input with 3µA typical internal pull-up, used together with SEL0."
      },
      {
        "number": "12",
        "name": "CTH",
        "type": "passive",
        "description": "Demodulation threshold voltage integration capacitor pin; connect a 0.1µF capacitor to GND for a stable slicing threshold."
      },
      {
        "number": "13",
        "name": "CAGC",
        "type": "passive",
        "description": "AGC filter capacitor pin; connect a capacitor to GND, with value per the AGC Loop and CAGC section."
      },
      {
        "number": "14",
        "name": "RSSI",
        "type": "output",
        "description": "Received signal strength indicator output, an inverted amplified version of the CAGC voltage with 250Ω typical output impedance."
      },
      {
        "number": "15",
        "name": "NC",
        "type": "unconnected",
        "description": "No connect, leave this pin floating."
      },
      {
        "number": "16",
        "name": "RO2",
        "type": "passive",
        "description": "Reference resonator connection to the Pierce oscillator, with 7pF internal capacitance to GND in normal operation."
      }
    ],
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        "at": "2026-10-23T09:04:00"
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        "total": 16,
        "described": 16,
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  "metadata": {
    "specs": {
      "Manufacturer": "Microchip Tech",
      "Package": "QSOP-16-150mil",
      "Category": "Radio Frequency Chip/Antenna",
      "Pins": "16"
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