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ADC Single SAR 1.25Msps 14-bit Serial 48-Pin TQFP T/R, ADS7890IPFBT, Texas Instruments

The ADS7890 is a 14-bit 1.25-MSPS A-to-D converter with 2.5-V internal reference. The device includes acapacitor based SAR A/D converter with inherent sample and hold. The device offers a 14-bit serial SPI or DSPcompatible interface. The device has a pseudo-differential input stage. The –IN swing of ±200 mV is useful to compensate for ground voltage mismatch between the ADC and sensorand also to cancel common-mode noise. The device operates at lower power when used at lower conversionrates because of the nap feature. The device is available in a 48-pin TQFP package.

  • 1.25 MHz Sample Rate, 14-Bit Resolution
  • Zero Latency
  • Unipolar, Pseudo Differential Input, Range:
    • 0 V to 2.5 V
  • SPI™ Compatible Serial Interface
  • 77.5 dB SNR and –95 dB THD at 0.5 MHz I/P
  • Power Dissipation 45 mW at 1.25 MSPS
  • Nap Mode (10 mW Power Dissipation)
  • Power Down (10 µW)
  • Internal Reference
  • Internal Reference Buffer
  • 48-Pin TQFP Package
  • APPLICATIONS
    • Optical Networking (DWDM, MEMS Based Switching)
    • Spectrum Analyzers
    • High Speed Data Acquisition Systems
    • High Speed Close-Loop Systems
    • Telecommunication

    • Характеристики

    Volt_supply_source

    Single
    Country_of_origin

    United States
    Sampling_rate

    1.25 Msps
    Volt_reference

    External, Internal
    Digital_supply_support

    No
    Architecture

    SAR
    Resolution

    14 Bit
    Typical_power_dissipation

    45 mW
    Differential_nonlinearity

    -1, 1.5 LSB
    Signal_to_noise_ratio

    78 dB
    Input_type

    Voltage
    Input_signal_type

    Differential, Pseudo-Differential
    Input_volt

    2.5 V
    Бренд

    Msl_level

    2
    Number_of_analog_inputs

    1
    Htsn

    8542390001
    Eccn

    EAR99
    Lead_finish

    Gold
    Max_power_dissipation

    60 mW
    Max_processing_temp

    260
    Mounting

    Surface Mount
    Operating_temp

    -40 to 85 °C
    Pin_count

    48
    Product_dimensions

    7 x 7 x 1 mm
    Schedule_b

    8542390000
    Specifications

    http://www.ti.com/general/docs/lit/getliterature.tsp?genericPartNumber=ADS7890&&fileType=pdf
    Supplier_package

    TQFP
    Polarity_of_input_volt

    Unipolar
    Operating_supply_volt

    4.75, 5 V, 5.25
    Number_of_adcs

    1
    Digital_interface_type

    Serial (SPI)
    SKU: ADS7890IPFBT

    Description

    The ADS7890 is a 14-bit 1.25-MSPS A-to-D converter with 2.5-V internal reference. The device includes acapacitor based SAR A/D converter with inherent sample and hold. The device offers a 14-bit serial SPI or DSPcompatible interface. The device has a pseudo-differential input stage. The –IN swing of ±200 mV is useful to compensate for ground voltage mismatch between the ADC and sensorand also to cancel common-mode noise. The device operates at lower power when used at lower conversionrates because of the nap feature. The device is available in a 48-pin TQFP package.

  • 1.25 MHz Sample Rate, 14-Bit Resolution
  • Zero Latency
  • Unipolar, Pseudo Differential Input, Range:
    • 0 V to 2.5 V
  • SPI™ Compatible Serial Interface
  • 77.5 dB SNR and –95 dB THD at 0.5 MHz I/P
  • Power Dissipation 45 mW at 1.25 MSPS
  • Nap Mode (10 mW Power Dissipation)
  • Power Down (10 µW)
  • Internal Reference
  • Internal Reference Buffer
  • 48-Pin TQFP Package
  • APPLICATIONS
    • Optical Networking (DWDM, MEMS Based Switching)
    • Spectrum Analyzers
    • High Speed Data Acquisition Systems
    • High Speed Close-Loop Systems
    • Telecommunication

    • Additional information

    Volt_supply_source

    Single
    Country_of_origin

    United States
    Sampling_rate

    1.25 Msps
    Volt_reference

    External, Internal
    Digital_supply_support

    No
    Architecture

    SAR
    Resolution

    14 Bit
    Typical_power_dissipation

    45 mW
    Differential_nonlinearity

    -1, 1.5 LSB
    Signal_to_noise_ratio

    78 dB
    Input_type

    Voltage
    Input_signal_type

    Differential, Pseudo-Differential
    Input_volt

    2.5 V
    Бренд

    Msl_level

    2
    Number_of_analog_inputs

    1
    Htsn

    8542390001
    Eccn

    EAR99
    Lead_finish

    Gold
    Max_power_dissipation

    60 mW
    Max_processing_temp

    260
    Mounting

    Surface Mount
    Operating_temp

    -40 to 85 °C
    Pin_count

    48
    Product_dimensions

    7 x 7 x 1 mm
    Schedule_b

    8542390000
    Specifications

    http://www.ti.com/general/docs/lit/getliterature.tsp?genericPartNumber=ADS7890&&fileType=pdf
    Supplier_package

    TQFP
    Polarity_of_input_volt

    Unipolar
    Operating_supply_volt

    4.75, 5 V, 5.25
    Number_of_adcs

    1
    Digital_interface_type

    Serial (SPI)

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