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AD7903BRQZ - Analog Devices

Description: Analog Devices AD7903BRQZ, 16 bit Serial ADC, Dual Differential Input, 20-Pin QSOP

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AD7903BRQZ - Analog Devices - PCB symbol
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PCB Footprints
AD7903BRQZ - Analog Devices PCB footprint - Small Outline Packages - Small Outline Packages - RQ-20 (QSOP)
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AD7903BRQZ - Analog Devices - 3D model - Small Outline Packages - RQ-20 (QSOP)
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AD7903BRQZ Details

  • Manufacturer Part Number:

    AD7903BRQZ

  • Brand Name:

    Analog Devices Inc

  • Pbfree Code:

    No

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    SOIC

  • Package Description:

    ROHS COMPLIANT, MO-137AD, QSOP-20

  • Pin Count:

    20

  • Manufacturer Package Code:

    RQ-20

  • Country Of Origin:

    Philippines

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.01

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    10

  • Analog Input Voltage-Max:

    5.1 V

  • Analog Input Voltage-Min:

    -2.4 V

  • Conversion Time-Max:

    0.71 µs

  • Converter Type:

    ADC, SUCCESSIVE APPROXIMATION

  • JESD-30 Code:

    R-PDSO-G20

  • JESD-609 Code:

    e3

  • Length:

    8.66 mm

  • Linearity Error-Max (EL):

    0.0031%

  • Moisture Sensitivity Level:

    1

  • Number of Analog In Channels:

    2

  • Number of Bits:

    16

  • Number of Functions:

    1

  • Number of Terminals:

    20

  • Operating Temperature-Max:

    125 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Bit Code:

    BINARY, 2S COMPLEMENT 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

  • Sample Rate:

    1 MHz

  • Sample and Hold / Track and Hold:

    TRACK

  • Seated Height-Max:

    1.75 mm

  • Supply Current-Max:

    1.6 mA

  • Supply Voltage-Nom:

    2.5 V

  • Surface Mount:

    YES

  • Temperature Grade:

    AUTOMOTIVE

  • Terminal Finish:

    Matte Tin (Sn)

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    0.64 mm

  • Terminal Position:

    DUAL

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

    30

  • Width:

    3.91 mm

AD7903BRQZ Frequently Asked Questions (FAQs)

  • The AD7903BRQZ is a high-speed amplifier, and as such, it requires careful layout and placement to minimize noise and ensure optimal performance. It is recommended to keep the input and output traces as short as possible, and to use a solid ground plane to reduce noise. Additionally, it is recommended to place the amplifier close to the signal source and to use a low-impedance output to reduce ringing and oscillations.
  • The gain resistor values for the AD7903BRQZ can be calculated using the formula: Rg = (Rf / (1 + (Rf / Rg))) * (Vout / Vin), where Rg is the gain resistor, Rf is the feedback resistor, Vout is the output voltage, and Vin is the input voltage. The recommended values for Rg and Rf can be found in the datasheet, but the actual values may need to be adjusted based on the specific application requirements.
  • The maximum power dissipation for the AD7903BRQZ is 1.4W. To ensure that it does not overheat, it is recommended to provide adequate heat sinking, such as a thermal pad or a heat sink, and to keep the ambient temperature below 85°C. Additionally, it is recommended to keep the device away from other heat sources and to ensure good airflow around the device.
  • Common issues with the AD7903BRQZ, such as oscillations or instability, can be troubleshooted by checking the layout and placement of the device, ensuring that the input and output traces are short and well-matched, and verifying that the power supply is clean and stable. Additionally, it is recommended to check the gain and phase margins of the amplifier, and to adjust the compensation capacitors if necessary.
  • The recommended PCB materials for the AD7903BRQZ are FR4 or Rogers 4350B, with a thickness of 0.0625 inches or 1.6 mm. The recommended stack-up is a 4-layer board with a solid ground plane on the bottom layer, a power plane on the second layer, a signal layer on the third layer, and a top layer for the components. This stack-up helps to reduce noise and ensure optimal performance.

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AD7903BRQZ Overview

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About Analog Devices

Analog Devices Inc. is a global leader in the design and manufacturing of analog, mixed-signal, and digital signal processing integrated circuits and software solutions for the industrial, automotive, healthcare, communications industries. Analog Devices serves a diverse range of markets including industrial, automotive, healthcare, energy, aerospace, defense, and consumer electronics industries. Analog Devices’ product portfolio includes a wide range of ICs, modules, and subsystems.

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