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MAX12900 - Ultra-Low-Power 4-20mA Sensor Transmitter

General Description

The MAX12900 is an ultra-low-power, highly integrated 4-20mA sensor transmitter.

Key Features

  • Supply rail monitoring, output current readback, open circuit and failure detection are a few examples of diagnostic features. All these features, as well as ultra-low-power and high accuracy make the MAX12900 ideal for loop-powered smart sensor transmitters for industrial.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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MAX12900 EVALUATION KIT AVAILABLE Ultra-Low-Power 4-20mA Sensor Transmitter General Description The MAX12900 is an ultra-low-power, highly integrated 4-20mA sensor transmitter. The MAX12900 integrates ten building blocks in a small package: a wide input supply voltage LDO, two conditioner circuits for pulse-widthmodulated (PWM) inputs, two low-power, low-drift, generalpurpose operational amplifiers (op amp) one wide bandwidth, zero-offset drift operational amplifier; two diagnostic comparators, a power-up sequencer with power good output to allow for a smooth power-up, and a low-drift voltage reference. The MAX12900 converts PWM data from a microcontroller into current over a 4-20mA loop with two, three, or fourwire configurations.