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AD7843ARQZ - Analog Devices

Description: AD7843ARQZ, Touch Screen Digitizer, 12bit- 125ksps, 16-Pin QSOP

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AD7843ARQZ Details

  • Manufacturer Part Number:

    AD7843ARQZ

  • Brand Name:

    Analog Devices Inc

  • Pbfree Code:

    No

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    SSOP

  • Package Description:

    QSOP-16

  • Pin Count:

    16

  • Manufacturer Package Code:

    RQ-16

  • Country Of Origin:

    Philippines

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.01

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    10

  • Analog Input Voltage-Max:

    3.6 V

  • Converter Type:

    ADC, SUCCESSIVE APPROXIMATION

  • JESD-30 Code:

    R-PDSO-G16

  • JESD-609 Code:

    e3

  • Length:

    4.9 mm

  • Linearity Error-Max (EL):

    0.0488%

  • Moisture Sensitivity Level:

    1

  • Number of Analog In Channels:

    4

  • Number of Bits:

    12

  • Number of Functions:

    1

  • Number of Terminals:

    16

  • 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:

    TSSOP16,.24

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE, SHRINK PITCH

  • Peak Reflow Temperature (Cel):

    260

  • Sample Rate:

    0.125 MHz

  • Sample and Hold / Track and Hold:

    TRACK

  • Seated Height-Max:

    1.7526 mm

  • Supply Current-Max:

    0.38 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:

    0.635 mm

  • Terminal Position:

    DUAL

  • Width:

    3.9116 mm

AD7843ARQZ Frequently Asked Questions (FAQs)

  • A good layout and routing practice is to keep the analog and digital grounds separate, use a solid ground plane, and keep the analog and digital signal traces separate and away from each other. Additionally, use a low-ESR capacitor for the VCC pin and a 0.1uF capacitor for the AVCC pin.
  • The AD7843ARQZ has an internal calibration circuit that can be enabled by setting the CAL bit in the control register. The calibration process involves a self-calibration sequence that adjusts the internal offset and gain to ensure accurate conversions. Refer to the datasheet for the specific calibration procedure.
  • The AD7843ARQZ can achieve a maximum sampling rate of 200 kSPS (kilosamples per second) in the fast mode, and 100 kSPS in the normal mode. However, the actual sampling rate may vary depending on the system clock frequency and the conversion mode.
  • The AD7843ARQZ has a power-on reset circuit that ensures the device is in a known state after power-up. The recommended power-up sequence is to apply VCC first, followed by AVCC, and then the digital inputs. The device will reset and be ready for operation after a minimum of 10ms.
  • The AD7843ARQZ can be interfaced with a microcontroller or DSP using a standard SPI interface. The recommended method is to use a dedicated SPI port on the microcontroller or DSP, and to ensure that the clock frequency and data transfer protocol are compatible with the AD7843ARQZ's requirements.

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AD7843ARQZ 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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