Microchip Technology MCP3564R microCurrent Monitor Evaluation Board
Microchip Technology MCP3564R microCurrent Monitor Evaluation Board uses the MCP3564R 8-Channel 24-bit Delta-Sigma ADC to measure both low (µA) and high (800+mA) currents across 0.05Ω shunt. This evaluation board employs two high-side current sense amplifiers, MCP6C02 and MCP6C26, each with a fixed internal gain of 50. The two different amplifiers were used for their complementary input voltage ranges, enabling current measurements from 0V to 65V. Both amplifiers are configured for bidirectional current sensing, with their outputs offset at half of the ADC’s reference voltage (VREF). The MCP3564R microCurrent Monitor is designed to be mikroBUS compatible, ensuring seamless interconnection with a wide variety of microcontroller boards.
Features
- CP3564R 8-Channel 24-bit Delta-Sigma ADC with internal voltage reference
- High-side zero-drift current sense amplifiers on 0.05Ω shunts:
- 3V to 65V input voltage range (MCP6C02)
- 0V to 36V input voltage range (MCP6C26)
- On-board precision voltage reference (MCP1501) and 0.1% load resistors for calibrating the ADC measurements
- Buffered voltage dividers to measure bus voltages for both current channels
- 100 mil Header for load connection and calibration
- mikroBUS compatibility
- Test Points on current sense amplifier outputs and power rails
- Python demo code for the EV64F02A - PIC32MZ MXS data capture board using the generic SPI Bridge functionality
Block Diagram
Hardware Overview
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