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LMP90100MHE/NOPB Datasheet(PDF) 1 Page - Texas Instruments |
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LMP90100MHE/NOPB Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 69 page  LMP90100 www.ti.com SNAS510P – JANUARY 2011 – REVISED MARCH 2013 LMP90100/LMP90099/LMP90098/LMP90097 Sensor AFE System: Multi-Channel, Low Power 24-Bit Sensor AFE with True Continuous Background Calibration Check for Samples: LMP90100 1 FEATURES APPLICATIONS 23 • 24-Bit Low Power Sigma Delta ADC • Temperature and Pressure Transmitters • True Continuous Background Calibration at all • Strain Gauge Interface gains • Industrial Process Control • In-Place System Calibration using Expected Value programming DESCRIPTION The LMP90100/LMP90099/LMP90098/LMP90097 are • Low-Noise programmable gain (1x - 128x) highly integrated, multi-channel, low power 24-bit • Continuous background open/short and out of Sensor AFEs. The devices features a precision, 24- range sensor diagnostics bit Sigma Delta Analog-to-Digital Converter (ADC) • 8 output data rates (ODR) with single-cycle with a low-noise programmable gain amplifier and a settling fully differential high impedance analog input multiplexer. A true continuous background calibration • 2 matched excitation current sources from 100 feature allows calibration at all gains and output data µA to 1000 µA (LMP90100/LMP90098) rates without interrupting the signal path. The • 4-DIFF / 7-SE inputs (LMP90100/LMP90099) background calibration feature essentially eliminates • 2-DIFF / 4-SE inputs (LMP90098/LMP90097) gain and offset errors across temperature and time, providing measurement accuracy without sacrificing • 7 General Purpose Input/Output pins speed and power consumption. • Chopper-stabilized buffer for low offset Another feature of the • SPI 4/3-wire with CRC data link error detection LMP90100/LMP90099/LMP90098/LMP90097 is • 50 Hz to 60 Hz line rejection at ODR ≤13.42 continuous background sensor diagnostics, allowing SPS the detection of open and short circuit conditions and • Independent gain and ODR selection per out-of-range signals, without requiring user intervention, resulting in enhanced system reliability. channel • Supported by Webench Sensor AFE Designer Two sets of independent external reference voltage pins allow multiple ratiometric measurements. In • Automatic Channel Sequencer addition, two matched programmable current sources are available in the LMP90100/LMP90098 to excite KEY SPECIFICATIONS external sensors such as resistive temperature • ENOB/NFR Up to 21.5/19 bits detectors and bridge sensors. Furthermore, seven GPIO pins are provided for interfacing to external • Offset Error (typ) 8.4 nV LEDs and switches to simplify control across an • Gain Error (typ) 7 ppm isolation barrier. • Total Noise < 10 µV-rms Collectively, these features make the • Integral Non-Linearity (INL max) ±15 ppm of LMP90100/LMP90099/LMP90098/LMP90097 FSR complete analog front-ends for low power, precision • Output Data Rates (ODR) 1.6775 - 214.65 SPS sensor applications such as temperature, pressure, strain gauge, and industrial process control. The • Analog Voltage, VA +2.85 to +5.5 V LMP90100/LMP90099/LMP90098/LMP90097 are • Operating Temp Range -40°C to 125 °C ensured over the extended temperature range of - • Package 28 Pin HTSSOP exposed pad 40°C to +125°C and are available in a 28-pin HTSSOP package with an exposed pad. 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 TRI-STATE is a registered trademark of National Semiconductor Corporation. 3 All other trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2011–2013, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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