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LMP90079

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16-Bit, 214.6-SPS, 7-ch delta-sigma ADC for sensors

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Data sheet

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ADS114S08 ACTIVE 16-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 and 2x IDACs

LMP90079

ACTIVE
Data sheet Order now

Product details

Resolution (bps) 16 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 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) 16 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 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
  • 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
  • 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

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.

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.
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* Data sheet LMP9007x/LMP90080 Sensor AFE System: Multi-Channel, Low-Power 16-Bit Sensor AFE With True Continuous Background Calibration datasheet (Rev. H) PDF | HTML 22 Jan 2016

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