LMP90078MHXSLASHNOPB.A中文资料德州仪器数据手册PDF规格书

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.