1 Features
1• 16-Bit Low-Power Sigma Delta ADC
• True Continuous Background Calibration at All
Gains
• In-Place System Calibration Using Expected
Value Programming
• Low-Noise Programmable Gain (1x - 128x)
• Continuous Background Open/Short and Out of
Range Sensor Diagnostics
• 8 Output Data Rates (ODR) with Single-Cycle
Settling
• 2 Matched Excitation Current Sources from 100
μA to 1000 μA (LMP90080/LMP90078)
• 4-DIFF / 7-SE Inputs (LMP90080/LMP90079)
• 2-DIFF / 4-SE Inputs (LMP90078/LMP90077)
• 7 General Purpose Input/Output Pins
• Chopper-Stabilized Buffer for Low Offset
• SPI 4/3-Wire with CRC Data Link Error Detection
• 50 Hz to 60 Hz Line Rejection at ODR ≤13.42
SPS
• Independent Gain and ODR Selection per
Channel
• Supported by WEBENCH® Sensor AFE Designer
• Automatic Channel Sequencer
• Key Specifications
– ENOB/NFR: Up to 16/16 Bits
– Offset Error (typ): 8.4 nV
– Gain Error (typ): 7 ppm
– Total Noise: <10 μV-rms
– Integral Non-Linearity (INL Max): ±1 LSB
– Output Data Rates (ODR): 1.6775–214.65
SPS
– Analog Voltage, VA: 2.85 to 5.5 V
– Operating Temp Range: –40°C to 125°C
– Package: 28 Pin Exposed Pad

2 Applications
• Temperature and Pressure Transmitters
• Strain Gauge Interface
• Industrial Process Control

3 Description
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 lownoise
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.