Analog DevicesEVAL-CN0337-PMDZ

Reference Design: 12-Bit, 300 kSPS, Single-Supply, Fully Isolated RTD Temperature Measurement System with 3-Wire Compensation

EVAL-CN0337-PMDZ is a Pmod interface board with a completely isolated 12-bit, 300 kSPS RTD temperature measuring system that uses only three active devices. The system processes the output of a Pt100 RTD and includes an innovative circuit for lead-wire compensation using a standard 3-wire connection. The circuit operates on a single 3.3 V supply. The total error after room temperature calibration is less than ±0.24% FSR for a ±10°C change in temperature, making it ideal for a wide variety of industrial temperature measurements.

Block Diagram:

Features:

• Flexible RTD conditioning and conversion

• Temperature compensated

• Fully isolated

Applications:

• Battery-powered systems

• Handheld meters

• Medical instruments

• Instrumentation and control systems

• Data acquisition systems

• Optical sensors

• Diagnostic/monitoring functions

• Energy harvesting

 

Compatible FPGA Boards

• Intel boards with the Pmod connector

Related ADI parts:

• ADUM5401:  Quad-Channel Isolators with Integrated DC/DC Converter (3/1 channel directionality)

• AD7091R: 1 MSPS, Ultralow Power, 12-Bit ADC in 10-Lead LFCSP and MSOP

• AD8608: Low Noise, CMOS, Rail-to-Rail, Input/Output Precision Quad Op Amp

Reference Documentation:

• ADI Pmod Daughter Cards