ADS1191IRSMR by Texas Instruments | AFEs - Analog Front End ICs | Avnet ASIA
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ADS1191IRSMR

Texas Instruments

AFE General Purpose 1ADC 24-Bit 1.8V/3V 32-Pin VQFN EP T/R

Manufacturer Part #: ADS1191IRSMR

Alternate Part #: ADS1191IRSMR


RoHS Compliant

Descriptions

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Information

The ADS1191/2 are a family of multichannel, simultaneous sampling, 16-bit, delta-sigma (ΔΣ) analog-to-digital converters (ADCs) with a built-in programmable gain amplifier (PGA), internal reference, and an onboard oscillator.

The ADS1191/2 incorporate all of the features that are commonly required in portable, low-power medical electrocardiogram (ECG), sports, and fitness applications.

With its high levels of integration and exceptional performance,the ADS1191/2 family enables the creation of scalable medical instrumentation systems at significantly reduced size, power, and overall cost.

The ADS1191/2 have a flexible input multiplexer per channel that can be independently connected to the internally-generated signals for test, temperature, and lead-off detection. Additionally, any configuration of input channels can be selected for derivation of the right leg drive (RLD) output signal. The ADS1191/2 operate at data rates up to 8 kSPS. Lead-off detection can be implemented internal to the device, using the device internal excitation current sink/source.

The devices are packaged in a 5-mm × 5-mm, 32-pin thin quad flat pack (TQFP).Operating temperature is specified from –40°C to +85°C.

 

Key Features

  • Two Low-Noise PGAs and
    Two High-Resolution ADCs (ADS1192)
  • Low Power: 335 µW/channel
  • Input-Referred Noise: 24 µVPP
    (150-Hz BW, G = 6)
  • Input Bias Current: 1 nA
  • Data Rate: 125 SPS to 8 kSPS
  • CMRR: –95 dB
  • Programmable Gain: 1, 2, 3, 4, 6, 8, or 12
  • Supplies: Unipolar or Bipolar
    • Analog: 2.7 V to 5.25 V
    • Digital: 1.7 V to 3.6 V
  • Built-In Right Leg Drive Amplifier, Lead-Off Detection, Test Signals
  • Built-In Oscillator and Reference
  • Flexible Power-Down, Standby Mode
  • SPI™-Compatible Serial Interface
  • Operating Temperature Range: –40°C to +85°C
  • Technical Attributes

    Description
    Value
    Find similar Parts
    Minimum Operating Supply Voltage
    1.7|2.7 V
    Screening Level
    Industrial
    Number of ADC Inputs
    1
    Category
    General Purpose
    Interface Type
    Serial (SPI)
    Operating Temperature
    -40 to 85 °C
    Supplier Package
    VQFN EP
    Pin Count
    32
    Maximum Operating Supply Voltage
    3.6|5.25 V
    Type
    General Purpose
    Power Supply Type
    Analog|Digital
    Typical Operating Supply Voltage
    1.8|3 V
    Number of ADCs
    1
    Resolution
    24 Bit
    Sampling Rate
    8 ksps
    Number of Channels per Chip
    1
    Mounting
    Surface Mount
    Typical Supply Current
    0.25 mA
    Product Dimensions
    4.15 x 4.15 x 0.95 mm

    ECCN / UNSPSC

    Description
    Value
    ECCN:
    EAR99
    SCHEDULE B:
    85423900905.1
    HTSN:
    85423900905.1
    UNSPSC:
    32101600
    UNSPSC VERSION:
    V15.1101

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