AD620 Instrumentation Amplifier

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  "title": "AD620 Instrumentation Amplifier",
  "brief": "Low-power, low-noise instrumentation amplifier with a single-resistor gain set.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "instrumentation-amp",
    "in-amp",
    "low-noise",
    "precision",
    "adi",
    "soic-8"
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  "component": {
    "mpn": "AD620",
    "manufacturer": "Analog Devices",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Analog",
    "subcategory": "Instrumentation Amplifier",
    "datasheet": "https://www.analog.com/media/en/technical-documentation/data-sheets/AD620.pdf",
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    "pins": [
      {
        "number": "1",
        "name": "RG",
        "type": "passive",
        "description": "Gain-setting resistor terminal. Connect an external resistor RG between pins 1 and 8 to program the gain: G = 1 + (49.4 kΩ / RG). Leave open for unity gain (G = 1)."
      },
      {
        "number": "2",
        "name": "-IN",
        "type": "input",
        "description": "Inverting analog input of the instrumentation amplifier. Differential input impedance 10 GΩ||2 pF; input voltage range within (-Vs + 1.9 V) to (+Vs - 1.2 V) at ±15 V supply."
      },
      {
        "number": "3",
        "name": "+IN",
        "type": "input",
        "description": "Noninverting analog input of the instrumentation amplifier. Differential input impedance 10 GΩ||2 pF; input voltage range within (-Vs + 1.9 V) to (+Vs - 1.2 V) at ±15 V supply."
      },
      {
        "number": "4",
        "name": "-VS",
        "type": "power_in",
        "description": "Negative supply rail. Operating range ±2.3 V to ±18 V (bipolar) referenced to +VS. Quiescent current 0.9 mA typ, 1.3 mA max."
      },
      {
        "number": "5",
        "name": "REF",
        "type": "input",
        "description": "Reference input. Sets the DC level of the output; the output voltage is measured with respect to this pin. Input resistance 20 kΩ typical, input current 50 µA (60 µA max) when VIN+ = VREF = 0. Must be driven from a low-impedance source to preserve CMRR."
      },
      {
        "number": "6",
        "name": "OUTPUT",
        "type": "output",
        "description": "Amplifier output. Output voltage = G × (V+IN - V-IN) + VREF. Output swing to within ~1.2 V of the rails at ±15 V into 10 kΩ; short-circuit current ±18 mA."
      },
      {
        "number": "7",
        "name": "+VS",
        "type": "power_in",
        "description": "Positive supply rail. Operating range ±2.3 V to ±18 V (bipolar). Quiescent current 0.9 mA typ, 1.3 mA max."
      },
      {
        "number": "8",
        "name": "RG",
        "type": "passive",
        "description": "Gain-setting resistor terminal. Connect an external resistor RG between pins 1 and 8 to program the gain: G = 1 + (49.4 kΩ / RG). Leave open for unity gain (G = 1)."
      }
    ],
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        "total": 8,
        "described": 8,
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        "zmin_mm": -0.0,
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  "metadata": {
    "specs": {
      "Type": "Instrumentation amplifier",
      "Gain": "1 to 1000 (single external resistor)",
      "Input offset voltage": "50 uV max",
      "Input noise": "9 nV/sqrt(Hz) at 1 kHz",
      "CMRR": "100 dB min (G >= 10)",
      "Supply voltage": "+-2.3 V to +-18 V",
      "Supply current": "1.3 mA max",
      "Operating temperature": "-40 C to 85 C"
    }
  },
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  "discovery_triggers": [
    "instrumentation amplifier",
    "bridge sensor amplifier",
    "ECG amplifier",
    "single-resistor gain in-amp"
  ],
  "discovery_pitch": "A classic low-noise in-amp with one external resistor to set gain from 1 to 1000, for bridge and biopotential sensors.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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