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ADS7844EBG4 - Texas Instruments

Description: TEXAS INSTRUMENTS - ADS7844EBG4 . - Analogue to Digital Converter, 12 bit, 200 kSPS, Differential, Single Ended, Serial, Single, 2.7 V

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ADS7844EBG4 - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - DBQ (R-PDSO-G20)
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ADS7844EBG4 - Texas Instruments  - 3D model - Small Outline Packages - DBQ (R-PDSO-G20)
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ADS7844EBG4 Details

  • Manufacturer Part Number:

    ADS7844EBG4

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    QSOP

  • 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:

    8.65 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,.25

  • 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:

    1.75 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:

    0.635 mm

  • Terminal Position:

    DUAL

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

    30

  • Width:

    3.9 mm

ADS7844EBG4 Frequently Asked Questions (FAQs)

  • The recommended power-up sequence is to power up VCC before VREF, and then power up VREF before applying any input signals. This ensures proper internal biasing and prevents any potential latch-up conditions.
  • The BUSY signal goes high during conversion and remains high until the conversion is complete. The host controller should monitor the BUSY signal and wait for it to go low before initiating the next conversion or accessing the data.
  • The maximum sampling rate of the ADS7844 is 125 kHz. However, the actual sampling rate may be limited by the system's clock frequency, the conversion time, and the settling time of the analog input signal.
  • The ADS7844 has an internal calibration circuit that can be used to calibrate the device. The calibration process involves applying a known input voltage and then reading the output code. The gain and offset errors can be calculated and corrected using the calibration data.
  • The ADS7844's performance is affected by temperature, with changes in gain, offset, and linearity. The device is specified to operate over a temperature range of -40°C to 85°C, and the user should consider these temperature effects when designing their system.

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ADS7844EBG4 Overview

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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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