The LMP90080-Q1 is a highly integrated, multi-channel, low-power 16-bit Sensor AFE. The
devices feature a precision, 16-bit Sigma Delta Analog-to-Digital Converter (ADC) with a low-noise
programmable gain amplifier and a fully differential high impedance analog input multiplexer. A
true continuous background calibration feature allows calibration at all gains and output data
rates without interrupting the signal path. The background calibration feature essentially
eliminates gain and offset errors across temperature and time, providing measurement accuracy
without sacrificing speed and power consumption.
Another feature of the LMP90080-Q1 is continuous background sensor diagnostics, allowing
the detection of open and short circuit conditions and out-of-range signals, without requiring user
intervention, resulting in enhanced system reliability.
Two sets of independent external reference voltage pins allow multiple ratiometric
measurements. In addition, two matched programmable current sources are available in the
LMP90080-Q1 to excite external sensors such as resistive temperature detectors and bridge sensors.
Furthermore, seven GPIO pins are provided for interfacing to external LEDs and switches to simplify
control across an isolation barrier.
Collectively, these features make the LMP90080-Q1 a complete analog front-end for
low-power, precision sensor applications such as temperature, pressure, strain gauge, and
industrial process control. The LMP90080-Q1 is ensured over the extended temperature range of -40°C
to +150°C and is available in a 28-pin package with an exposed pad.
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