
Analog Devices / Maxim Integrated MAX12900 Sensor Transmitter AFE
Analog Devices MAX12900 Sensor Transmitter Analog Front-End (AFE) is an ultra-low-power, highly integrated AFE for a 4mA to 20mA sensor transmitter. This AFE converts PWM data from a microcontroller into current over a 4mA to 20mA loop with two, three, or four-wire configurations. The Analog Devices MAX12900 integrates ten building blocks into a small package. This AFE is available in a 5mm x 5mm 32-pin TQFN package and operates over a temperature range of -40°C to 125°C.Features
- 4V to 36V input supply range
- Ultra-low power consumption
- 5mm x 5mm x 0.8mm 32-pin TQFN package
- Up to 16-bit resolution
- High linearity
Specifications
- 4V to 36V input supply range
- -40°C to +125°C temperature range
- 10ppm/°C drift voltage reference
- 0.01% maximum error
Applications
- Loop-powered 4mA–20mA current transmitter
- Smart sensors
- Remote instrumentation
- Industrial automation and process control
MAX12900 AFE Block Diagram

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Published: 2017-12-20
| Updated: 2023-04-11