Home Data converters Analog-to-digital converters (ADCs) Precision ADCs
Home
Data converters
Analog-to-digital converters (ADCs)
Precision ADCs

LMP90100

ACTIVE

24-Bit, 214.6-SPS, 7-ch delta-sigma ADC for sensors with 2x IDACs

Order now
Data sheet

A newer version of this product is available

open-in-new Compare alternates
Similar functionality to the compared device
ADS124S08 ACTIVE 24-bit, 4-kSPS, 12-ch delta-sigma ADC with PGA and voltage reference for sensor measurement This device has more analog inputs (12), faster sample rate (4 kSPS), lower power, smaller package, better DC accuracy, integrated VREF

LMP90100

ACTIVE
Data sheet Order now

Product details

Resolution (bps) 24 Sample rate (max) (ksps) 0.215 Number of input channels 7 Interface type SPI Architecture Delta-Sigma Input type Differential, Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode External Input voltage range (max) (V) 5.5 Input voltage range (min) (V) 0 Features Excitation Current Sources (iDACs), PGA Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 1.2 Analog supply (min) (V) 2.85 Analog supply voltage (max) (V) 5.5 Digital supply (min) (V) 2.7 Digital supply (max) (V) 5.5
Resolution (bps) 24 Sample rate (max) (ksps) 0.215 Number of input channels 7 Interface type SPI Architecture Delta-Sigma Input type Differential, Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode External Input voltage range (max) (V) 5.5 Input voltage range (min) (V) 0 Features Excitation Current Sources (iDACs), PGA Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 1.2 Analog supply (min) (V) 2.85 Analog supply voltage (max) (V) 5.5 Digital supply (min) (V) 2.7 Digital supply (max) (V) 5.5
HTSSOP (PWP) 28 62.08 mm² 9.7 x 6.4
  • 24-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 to 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 (LMP90100/LMP90098)
  • 4-DIFF / 7-SE Inputs (LMP90100/LMP90099)
  • 2-DIFF / 4-SE Inputs (LMP90098/LMP90097)
  • 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 WEBENCHR Sensor AFE Designer
  • Automatic Channel Sequencer
  • Key Specifications
    • ENOB/NFR Up to 21.5/19 Bits
    • Offset Error (Typical) 8.4 nV
    • Gain Error (Typical) 7 ppm
    • Total Noise < 10 µV-rms
    • Integral Nonlinearity (INL Maximum) ± 15 ppm
      of FSR
    • Output Data Rates (ODR) 1.6775 - 214.65
      SPS
    • Analog Voltage, VA 2.85 to 5.5 V
    • Operating Temp Range –4°C to 125°C
    • 28-Pin HTSSOP Exposed Pad
  • 24-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 to 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 (LMP90100/LMP90098)
  • 4-DIFF / 7-SE Inputs (LMP90100/LMP90099)
  • 2-DIFF / 4-SE Inputs (LMP90098/LMP90097)
  • 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 WEBENCHR Sensor AFE Designer
  • Automatic Channel Sequencer
  • Key Specifications
    • ENOB/NFR Up to 21.5/19 Bits
    • Offset Error (Typical) 8.4 nV
    • Gain Error (Typical) 7 ppm
    • Total Noise < 10 µV-rms
    • Integral Nonlinearity (INL Maximum) ± 15 ppm
      of FSR
    • Output Data Rates (ODR) 1.6775 - 214.65
      SPS
    • Analog Voltage, VA 2.85 to 5.5 V
    • Operating Temp Range –4°C to 125°C
    • 28-Pin HTSSOP Exposed Pad

The LMP90xxx is a highly integrated, multichannel, low-power, 24-bit Sensor AFEs. The devices features a precision, 24-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 LMP90100/LMP90099/LMP90098/LMP90097 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 LMP90100/LMP90098 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 LMP90100/LMP90099/LMP90098/LMP90097 complete analog front-ends for low-power, precision sensor applications such as temperature, pressure, strain gauge, and industrial process control. The LMP90100/LMP90099/LMP90098/LMP90097 are ensured over the extended temperature range of –40°C to +125°C and are available in a 28-pin HTSSOP package with an exposed pad.

The LMP90xxx is a highly integrated, multichannel, low-power, 24-bit Sensor AFEs. The devices features a precision, 24-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 LMP90100/LMP90099/LMP90098/LMP90097 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 LMP90100/LMP90098 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 LMP90100/LMP90099/LMP90098/LMP90097 complete analog front-ends for low-power, precision sensor applications such as temperature, pressure, strain gauge, and industrial process control. The LMP90100/LMP90099/LMP90098/LMP90097 are ensured over the extended temperature range of –40°C to +125°C and are available in a 28-pin HTSSOP package with an exposed pad.
filter Find other Precision ADCs
Download

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 1
Type Title Date
* Data sheet LMP90100 and LMP9009x Sensor AFE System: Multichannel, Low-Power, 24-Bit Sensor AFE With True Continuous Background Calibration datasheet (Rev. S) PDF | HTML 26 Jan 2016

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​