Reference Design for 16-Bit High-Accuracy 4-20mA Input Isolated Analog Front End (AFE)
Manufactured By:Maxim Integrated
Part Number:MAXREFDES4
In industrial control and industrial automation applications, high-resolution data converters are often required. Although today's field programmable gate arrays (FPGAs) and microcontrollers may integrate analog-to-digital converters (ADCs), in many cases, the resolution is not high enough and isolation is lacking. The Campbell (MAXREFDES4#) subsystem reference design is a 16-bit high-accuracy industrial analog front end (AFE) that accepts a 4–20mA current loop or a 0.2V to 4.096V voltage input signal, and features isolated power and data—all integrated into a small form factor.
The Campbell design integrates a precision low-noise buffer (MAX44250), a high-accuracy ADC (MAX11100), an ultra-high-precision 4.096V voltage reference (MAX6126), 600VRMS data isolation (MAX14850), and isolated/regulated 5V power rails (MAX256/MAX1659). This AFE solution can be used in any application that needs high-accuracy analog-to-digital conversion.
Applications:
The Campbell design integrates a precision low-noise buffer (MAX44250), a high-accuracy ADC (MAX11100), an ultra-high-precision 4.096V voltage reference (MAX6126), 600VRMS data isolation (MAX14850), and isolated/regulated 5V power rails (MAX256/MAX1659). This AFE solution can be used in any application that needs high-accuracy analog-to-digital conversion.
Applications:
- Industrial sensors
- Industrial automation
- Process control
- Programmable logic controllers (PLCs)
- Medical applications.
Features
- High accuracy
- 4–20mA current loop input
- 0.2V to 4.096V input range
- Isolated power and data
- Small printed circuit board (PCB) area
- Device drivers
- Example C source code
- Pmod™-compatible form factor
Ships With
- Board