The LLMP9007x and LMP90080 are highly integrated, multi-channel, low-power 16-bit Sensor
AFEs. 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 LMP9007x and LMP90080 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/LMP90078 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/LMP90079/LMP90078/LMP90077 complete analog
front-ends for low-power, precision sensor applications such as temperature, pressure, strain
gauge, and industrial process control. The LMP90080/LMP90079/LMP90078/LMP90077 are ensured over the
extended temperature range of –40°C to +125°C and are available in a 28-pin package with an exposed
pad.
