SPECIFICATIONS

Product Introduction:

This professional-grade instrumentation amplifier module is built around the renowned AD623 chip, offering an exceptional balance of precision, low power consumption, and versatility. Designed for demanding signal conditioning and data acquisition applications, it excels at amplifying weak sensor signals, microphone inputs, and other low-level differential voltages with high accuracy and minimal noise.

• Module Model: KY_AD623

• Module Type: Instrumentation Amplifier (designed for amplifying weak signals)

• Power Supply: ±3V to ±6V (Caution: Do not reverse polarity or exceed voltage limits, as this may damage the module.)

• Quiescent Current: Typically ±5mA (at ±5V supply)

• Input Specifications:

  • Maximum Input Voltage: ±2V (4Vpp), dependent on supply voltage and gain setting.

  • Input Impedance: Very High (GΩ range, datasheet reference 26GΩ; confirm with actual measurement).

  • Input Offset Voltage: 200µV (typical per datasheet).

  • Input Bias Current: 25nA (typical per datasheet).

  • Input Voltage Noise: 35nV/√Hz (typical per datasheet).

  • Signal Input Type: Single-ended or Differential (selectable via jumper).

• Output Specifications:

  • Maximum Output Voltage: ±4.5V (9Vpp), scales with the supply voltage (higher supply allows higher output swing).

  • Output Impedance: Low.

• Gain & Performance:

  • Gain Adjustment Range: 2 to 1000 times (via potentiometer).

  • Bandwidth: 80KHz at a gain of 10 (with 1Vpp output). The Gain Bandwidth Product (GBWP) is 800KHz.

  • Slew Rate: 0.3V/µs (typical per datasheet).

  • Offset Voltage Adjustment Range: ±VCC/2 (via potentiometer).

• Interfaces:

  • Power Supply Interface: Screw terminal.

  • Signal Input/Output Interface: SMA connector / 2.54mm pin header.