MCP6N11 and MCP6V2x Wheatstone Bridge Reference Design
The ARD00354 board demonstrates the performance of Microchip’s MCP6N11 instrumentation amplifier (INA) and a traditional three op amp INA using Microchip’s MCP6V26 and MCP6V27 auto-zeroed op amps. The input signal comes from an RTD temperature sensor in a Wheatstone bridge. Real world interference is added to the bridge’s output, to provide realistic performance comparisons. Data is gathered and displayed on a PC, for ease of use. The USB PICmicro® microcontroller and included Graphical User Interface (GUI) provides the means to configure the board and collect sample data. The power supply can be provided by the USB or by a lab power supply.
This board uses an RTD temperature sensor, in a Wheatstone bridge, to measure the board’s temperature. The bridge’s output is a small Differential mode (DM) signal with a large Common mode (CM) interference signal superimposed. The CM signal is a PWM waveform generated by the microcontroller, which simulates real world interference.
Features
- RTD temperature sensor
- INA signal conditioning
- PICmicro® signal conditioning and communications
- PC software (GUI): Thermal Management Utility
Ships With
- 1x MCP6N11 and MCP6V2x Wheatstone Bridge Reference Design (ARD00354)
- 1x Mini-USB cable