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AD844AQ - Analog Devices

Description: Operational Amplifiers - Op Amps 2000V/US, WIDE BW OP AMP

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AD844AQ - Analog Devices PCB footprint - Ceramic Dual-In-Line Packages - Ceramic Dual-In-Line Packages - Q-8_2022-2
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AD844AQ Details

  • Manufacturer Part Number:

    AD844AQ

  • Brand Name:

    Analog Devices Inc

  • Pbfree Code:

    No

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    DIP

  • Package Description:

    CERAMIC, DIP-8

  • Pin Count:

    8

  • Manufacturer Package Code:

    Q-8

  • Country Of Origin:

    Philippines

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.33.00.01

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    10

  • Amplifier Type:

    OPERATIONAL AMPLIFIER

  • Architecture:

    CURRENT-FEEDBACK

  • Average Bias Current-Max (IIB):

    0.4 µA

  • Bias Current-Max (IIB) @25C:

    0.45 µA

  • Frequency Compensation:

    YES

  • Input Offset Voltage-Max:

    500 µV

  • JESD-30 Code:

    R-GDIP-T8

  • JESD-609 Code:

    e0

  • Length:

    10.29 mm

  • Low-Bias:

    NO

  • Low-Offset:

    YES

  • Micropower:

    NO

  • Neg Supply Voltage Limit-Max:

    -18 V

  • Neg Supply Voltage-Nom (Vsup):

    -15 V

  • Number of Functions:

    1

  • Number of Terminals:

    8

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Package Body Material:

    CERAMIC, GLASS-SEALED

  • Package Code:

    DIP

  • Package Equivalence Code:

    DIP8,.3

  • Package Shape:

    RECTANGULAR

  • Package Style:

    IN-LINE

  • Power:

    NO

  • Programmable Power:

    NO

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    5.08 mm

  • Slew Rate-Min:

    1200 V/us

  • Slew Rate-Nom:

    2000 V/us

  • Supply Current-Max:

    8.5 mA

  • Supply Voltage Limit-Max:

    18 V

  • Supply Voltage-Nom (Vsup):

    15 V

  • Surface Mount:

    NO

  • Technology:

    BIPOLAR

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

    Tin/Lead (Sn/Pb)

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Pitch:

    2.54 mm

  • Terminal Position:

    DUAL

  • Unity Gain BW-Nom:

    60000

  • Wideband:

    YES

  • Width:

    7.62 mm

AD844AQ Frequently Asked Questions (FAQs)

  • The maximum power dissipation of the AD844AQ is 670mW, which is calculated based on the maximum junction temperature (TJ) of 150°C and the thermal resistance (θJA) of 125°C/W.
  • To ensure stability, it's essential to follow proper PCB layout practices, minimize parasitic capacitance, and use a compensation capacitor (if necessary) as recommended in the datasheet. Additionally, ensure that the feedback loop has a sufficient phase margin and gain margin.
  • The recommended input impedance for the AD844AQ is in the range of 1kΩ to 10kΩ. This ensures that the input bias current is minimized, and the amplifier operates within its specified performance.
  • While the AD844AQ can be used as a comparator, it's not the most suitable choice. The AD844AQ is an op-amp designed for linear applications, and its output stage is not optimized for high-speed switching. For comparator applications, consider using a dedicated comparator IC like the AD790 or AD8561.
  • To protect the AD844AQ from overvoltage conditions, use voltage clamping diodes (e.g., 1N4148) or a voltage limiter circuit at the input pins. Additionally, ensure that the power supply voltage does not exceed the maximum rating of ±18V.

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AD844AQ 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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