AMC1301 3-channel Isolated Current Acquisition Module

Specifications:

• Onboard SEPIC DC-DC Converter, supports a wide input voltage range (3.3V – 12V DC).
• Channel-to-channel isolation voltage: ≥2500V DC. Input-to-output isolation voltage: ≥2500V DC. Typical output offset voltage: 2mV.
• System gain: 8.2. The current measurement range can be easily adjusted by modifying the differential amplifier or shunt resistor.
• External reference input: Allows flexible adjustment of the reference level for different measurement systems.
• 3.3V supply: 100mA operating current.
• 5.0V supply: 65mA operating current.
• Supports bidirectional current measurement (positive & negative currents).
• Minimum analog bandwidth: 200kHz.

FAQ

• Q: How to configure STM32's internal ADC for measuring bidirectional current?
  A:
• The module's default output range is 0–3.3V, with 1.65V corresponding to zero current.
• This allows direct interfacing with 3.3V ADC-based MCUs or DSPs.
• The REF pin provides the zero-current reference voltage (1.65V) with an output impedance of 5kΩ.

Packing List:

• AMC1301 3-Channel Isolated Current Acquisition Module × 1
• 2.54mm 2×6 Pin Header × 1
• SMA 180° Connector × 3