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ADS7844NBG4 - Texas Instruments

Description: Texas Instruments ADS7844NBG4, 12-bit Serial ADC Differential, Single Ended Input, 20-Pin SSOP

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ADS7844NBG4 - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - DB0020A
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ADS7844NBG4 Details

  • Manufacturer Part Number:

    ADS7844NBG4

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    SSOP

  • Package Description:

    SSOP-20

  • Pin Count:

    20

  • Country Of Origin:

    Malaysia

  • HTS Code:

    8542.39.00.30

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    15

  • Analog Input Voltage-Max:

    5.25 V

  • Conversion Time-Max:

    0.75 µs

  • Converter Type:

    ADC, SUCCESSIVE APPROXIMATION

  • JESD-30 Code:

    R-PDSO-G20

  • JESD-609 Code:

    e4

  • Length:

    7.2 mm

  • Linearity Error-Max (EL):

    0.0244%

  • Moisture Sensitivity Level:

    2

  • Number of Analog In Channels:

    8

  • Number of Bits:

    12

  • Number of Functions:

    1

  • Number of Terminals:

    20

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Bit Code:

    BINARY

  • Output Format:

    SERIAL

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SSOP

  • Package Equivalence Code:

    SSOP20,.3

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE, SHRINK PITCH

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Sample Rate:

    0.2 MHz

  • Sample and Hold / Track and Hold:

    SAMPLE

  • Seated Height-Max:

    2 mm

  • Supply Voltage-Min:

    1.9 V

  • Supply Voltage-Nom:

    2.7 V

  • Surface Mount:

    YES

  • Technology:

    CMOS

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

    Nickel/Palladium/Gold (Ni/Pd/Au)

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    0.65 mm

  • Terminal Position:

    DUAL

  • Time@Peak Reflow Temperature-Max (s):

    30

  • Width:

    5.3 mm

ADS7844NBG4 Frequently Asked Questions (FAQs)

  • The recommended power-up sequence is to apply VCC first, followed by VREF, and then the clock signal. This ensures proper initialization of the device.
  • The BUSY signal goes high during conversion and remains high until the conversion is complete. The host should wait for BUSY to go low before accessing the data.
  • The maximum frequency of the clock signal is 3.25 MHz. Exceeding this frequency may result in incorrect conversions or device malfunction.
  • The gain of the ADC can be configured using the GAIN[1:0] pins. The gain settings are: 00 = 1x, 01 = 2x, 10 = 4x, and 11 = 8x.
  • The CAL pin is used to initiate a self-calibration sequence. When CAL is pulled low, the device performs a self-calibration and adjusts its internal offset and gain settings.

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About Texas Instruments

Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.

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