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AD7781CRZ - Analog Devices

Description: 20 Bit Analog to Digital Converter 1 Input 1 Sigma-Delta 14-SO

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AD7781CRZ - Analog Devices - PCB symbol
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AD7781CRZ - Analog Devices PCB footprint - Small Outline Packages - Small Outline Packages - R-14 (SOIC)
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AD7781CRZ - Analog Devices - 3D model - Small Outline Packages - R-14 (SOIC)
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AD7781CRZ Details

  • Manufacturer Part Number:

    AD7781CRZ

  • Brand Name:

    Analog Devices Inc

  • Pbfree Code:

    No

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    SOIC

  • Package Description:

    SOIC-14

  • Pin Count:

    14

  • Manufacturer Package Code:

    R-14

  • Country Of Origin:

    Taiwan

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.01

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    10

  • Analog Input Voltage-Max:

    5 V

  • Analog Input Voltage-Min:

    -5 V

  • Converter Type:

    ADC, DELTA-SIGMA

  • JESD-30 Code:

    R-PDSO-G14

  • JESD-609 Code:

    e3

  • Length:

    8.65 mm

  • Linearity Error-Max (EL):

    0.0006%

  • Moisture Sensitivity Level:

    1

  • Number of Analog In Channels:

    1

  • Number of Bits:

    20

  • Number of Functions:

    1

  • Number of Terminals:

    14

  • Operating Temperature-Max:

    105 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Bit Code:

    OFFSET BINARY

  • Output Format:

    SERIAL

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP14,.25

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    1.75 mm

  • Supply Current-Max:

    0.5 mA

  • Supply Voltage-Nom:

    3 V

  • Surface Mount:

    YES

  • Technology:

    CMOS

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

    Matte Tin (Sn)

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

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

    30

  • Width:

    3.9 mm

AD7781CRZ Frequently Asked Questions (FAQs)

  • The AD7781CRZ is a high-precision ADC, and its performance can be affected by the PCB layout and component placement. It is recommended to follow a star-grounding scheme, keep the analog and digital grounds separate, and place the ADC close to the analog signal sources. Additionally, decoupling capacitors should be placed as close as possible to the ADC's power pins.
  • The AD7781CRZ has an internal calibration mechanism that can be initiated by writing to the CAL register. The calibration process involves a series of internal measurements and calculations to determine the ADC's offset and gain errors. The calibration data is then stored in the ADC's internal registers and can be retrieved and used to correct the ADC's output data.
  • The maximum sampling rate of the AD7781CRZ is 30 kSPS (kilosamples per second). However, the actual sampling rate may be limited by the system's clock frequency, the ADC's conversion time, and the interface mode used (e.g., SPI or I2C).
  • Yes, the AD7781CRZ can be used with an external reference voltage. The ADC has a dedicated REFIN pin that can be connected to an external reference voltage source. The external reference voltage should be within the range of 2.5 V to 5.5 V, and its accuracy and stability will affect the ADC's overall performance.
  • The AD7781CRZ has a power-on reset (POR) and brown-out reset (BOR) circuitry that resets the ADC's internal registers and logic when the power supply voltage falls below a certain threshold. To handle POR and BOR, the system should ensure that the power supply voltage is stable and within the recommended range, and that the ADC is properly reset and initialized after power-up or brown-out events.

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AD7781CRZ Overview

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To find more CAD model downloads similar to this part, try a partial part number search, like AD778, or try a keyword search, such as Analog to Digital Converters

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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AD7781CRZ Alternates

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Part Image AD7781CRZ-REEL Analog Devices Inc

ADC, Delta-Sigma, 20-Bit, 1 Func, 1 Channel, Serial Access, PDSO14