Analog Devices MAX12900
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.
Analog Devices
