MAXREFDES16#: -200°C ~ 850°C, Hart Interface, RTD

Summary

Temperature is one of the most widely measured parameters in industrial process control and automation. This reference design provides a complete signal-chain solution that works with any type of RTDs, from PT100 to PT1000. The Novato PT100 2-wire, loop-powered smart temperature transmitter guarantees a low-power, easy-to-use, reliable solution of temperature measurement from -200°C to +850°C with accuracy better than 0.1% or 1.0°C, whichever is more accurate, over the entire operating range.

The signal chain contains the MAX11213 (U1), 16-bit delta-sigma ADC with programmable gain and GPIO, the RL78/G13 Renesas' microcontroller with 128kB flash memory (U2), and the 4–20mA current loop transmitter built on the MAX5216 and MAX9620 (U3 and U4). The DS8500 modem (U7) provides digital interface utilizing HART protocol over 4–20mA current loop. The MAX15006 (U6) and MAX6133 (U5) provide power and reference voltage to the entire circuitry.

Specifications

Manufacturer	Analog Devices Inc./Maxim Integrated
Category	Sensor Solutions
Sub-Category	Temperature Sensing
Eval Board Part Number	MAXREFDES16#-ND
Eval Board Supplier	Analog Devices Inc./Maxim Integrated
Eval Board	Board not Stocked
Purpose	Temp Sensor Interface
Sensing Method	RTD, External
Accuracy	0.1% or 1.0°C
Sensing Range	-200°C ~ 850°C
Features	HART Interface Sensor Burnout Detection
Design Author	Maxim Integrated Products
Main I.C. Base Part	DS8500 MAX11213 MAX4729 MAX5216
Component Count + Extras	92 + 6
Date Created By Author	2014-01
Date Added To Library	2014-05