4-20mA Analog Input Module Reference Design for Safety Applications
Description
TIDA-00548 is an isolated dual-channel 4- to 20-mA analog input reference design: which can be used as a sub-part for functional safety programmable logic controllers (PLCs). This reference design delivers digitized input values using a 32-bit high-performance analog-to-digital converter (ADC). The RM4x dual-core ARM® Cortex®-R4 based CPU with lockstep technology and built-in self-tests (BIST) compares the converted values of up to nine selectable analog input signal chain paths. The dual-input approach with two separate burden resistors allows redundant measurement of either a single 4- to 20-mA loop or two independent loops. Hercules™ RM ARM Cortex-R based MCUs for functional safety applications help to develop systems according to IEC 61508 SIL 3.
Features
- Two channel 4- to 20-mA current measurement for redundancy with full-scale error less than ±0.01%Two ADC references (external and internal)Utilizes ADC built-in features such as test DAC: secondary ADC: analog signal level alarm: SPI CRC: timeout and moreHercules RM ARM Cortex-R based MCU (for development of IEV 61508 functional safety applications)Isolator shutdown upon failure provides reliable notification to backendAll integrated circuits: MTBF greater 4·10^8
Applications
- Analog input module
- Desktop POS
- ATMs (Automated Teller Machines)
- CPU (PLC Controller)
- Single board computer
- Rugged PC & laptop
- Robot CPU and compute board
- Telemetry & RTUs
- CNC control
- Full authority digital engine control (FADEC)
- Mixed module (AI
- AO
- DI
- DO)
- Train control & management
- Railway electric propulsion
- Robot communication module
- Robot I/O module
- Robot sensor module
- Mobile robot sensor
- Stand-alone remote IO
- Computer on module
- Machine to machine
- Mobile robot CPU & compute module
- Mobile robot motor control
Product Categories
- Data converters