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ADS7817E/250 - Texas Instruments

Description: 12-Bit Differential Input Micro Power Sampling Analog-to-Digital Converter

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ADS7817E/250 - Texas Instruments - PCB symbol
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PCB Footprints
ADS7817E/250 - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - DGK (S-PDSO-G8)
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3D Models
ADS7817E/250 - Texas Instruments - 3D model - Small Outline Packages - DGK (S-PDSO-G8)
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ADS7817E/250 Details

  • Manufacturer Part Number:

    ADS7817E/250

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    MSOP

  • Package Description:

    TSSOP-8

  • Pin Count:

    8

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.30

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    15

  • Analog Input Voltage-Max:

    5.25 V

  • Analog Input Voltage-Min:

    4.75 V

  • Conversion Time-Max:

    3.75 µs

  • Converter Type:

    ADC, SUCCESSIVE APPROXIMATION

  • JESD-30 Code:

    S-PDSO-G8

  • JESD-609 Code:

    e4

  • Length:

    3 mm

  • Linearity Error-Max (EL):

    0.0488%

  • Moisture Sensitivity Level:

    1

  • Number of Analog In Channels:

    1

  • Number of Bits:

    12

  • Number of Functions:

    1

  • Number of Terminals:

    8

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Bit Code:

    2S COMPLEMENT BINARY

  • Output Format:

    SERIAL

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    TSSOP

  • Package Equivalence Code:

    TSSOP8,.19

  • Package Shape:

    SQUARE

  • Package Style:

    SMALL OUTLINE, THIN PROFILE, 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:

    1.1 mm

  • Supply Voltage-Min:

    4.75 V

  • Supply Voltage-Nom:

    5 V

  • Surface Mount:

    YES

  • Technology:

    CMOS

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

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

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    0.65 mm

  • Terminal Position:

    DUAL

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

    30

  • Width:

    3 mm

ADS7817E/250 Frequently Asked Questions (FAQs)

  • Texas Instruments recommends a 4-layer PCB with a solid ground plane, and placing the ADC close to the analog signal source. Additionally, use short and direct traces for the analog input signals, and keep digital signals away from the analog signals. Refer to the TI application note 'PCB Layout Guidelines for ADCs' for more details.
  • The ADS7817E/250 outputs data in a 16-bit, two's complement format. The byte ordering is most significant byte (MSB) first. Ensure that your microcontroller is configured to receive data in this format and byte order to avoid incorrect readings.
  • Power up the VCC supply first, followed by the AVCC supply. Then, apply the clock signal and finally, bring the CS pin low to enable the ADC. This sequence ensures that the internal voltage regulators and clock circuitry are properly initialized.
  • The ADS7817E/250 has an internal calibration circuit that can be used to trim the offset and gain errors. Use the CAL pin to initiate the calibration sequence, and follow the procedure outlined in the datasheet to achieve optimal accuracy.
  • The maximum sampling rate of the ADS7817E/250 is 250 kSPS. However, the power consumption increases with the sampling rate. At 250 kSPS, the typical power consumption is around 15 mW. Refer to the datasheet for more information on power consumption vs. sampling rate.

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ADS7817E/250 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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