AD8641:  Low Power, Rail - to - Rail Output Precision JFET Amplifier in 5-lead SC70 and 8-lead SOIC lead-free packages

The AD8641/AD8642/AD8643 are low power, precision JFET input amplifiers featuring extremely low input bias current and rail-to-rail output. The ability to swing nearly rail-to-rail at the input and ...More

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AD8641:  Low Power, Rail - to - Rail Output Precision JFET Amplifier in 5-lead SC70 and 8-lead SOIC lead-free packages

Product Description

The AD8641/AD8642/AD8643 are low power, precision JFET input amplifiers featuring extremely low input bias current and rail-to-rail output. The ability to swing nearly rail-to-rail at the input and rail-to-rail at the output enables designers to buffer CMOS DACs, ASICs, and other wide output swing devices in single-supply systems. The outputs remain stable with capacitive loads of more than 500 pF.

The AD8641/AD8642/AD8643 are suitable for applications utilizing multichannel boards that require low power to manage heat. Other applications include photodiodes, ATE reference level drivers, battery management, and industrial controls.

The AD8641/AD8642/AD8643 are fully specified over the extended industrial temperature range of –40°C to +125°C. The AD8641 is available in 5-lead SC70 and 8-lead SOIC lead-free packages. The AD8642 is available in 8-lead MSOP and 8-lead SOIC lead-free packages. The AD8643 is available in 14-lead SOIC and 16-lead, 3 mm × 3 mm, LFCSP lead-free packages.


Applications
  • Line-/battery-powered instruments
  • Photodiode amplifiers
  • Precision current sensing
  • Medical instrumentation
  • Industrial controls
  • Precision filters
  • Portable audio
  • ATE

    • Features

    • Low Supply Current: 250 µA max
    • Very Low Input Bias Current: 1 pA max
    • Low Offset Voltage: 750 µV max
    • Single-supply Operation: 5 V to 26 V
    • Dual-supply Operation: ±2.5 V to ±13 V
    • Rail-to-rail Output
    • Unity Gain Stable
    • No Phase Reversal
    • SC70 Package

    Diagrams

    • Enlarge
    • Symbols and Footprints
    AD8641 Diagram
    Pin Configuration Diagram for AD8641

    Specifications

    Vcc-Vee Supply (V) 5 to 26
    Iq per Amplifier 290µA
    -3dB Bandwidth 3.5MHz
    Aol 103dB
    I out Capability 12mA
    Capacitive Load 500pF
    Slew Rate 3V/µs
    Vos 50µV
    Ib 0.25pA
    Features Rail-to-Rail,Single Supply
    Packages SC70,SOIC

    Explore Other Products

    Part# V Span Max Iq per Amplifier -3dB Bandwidth Aol I out Capability Capacitive Load Slew Rate Vos Ib Price* (1000-4999) Product Description
    AD8560 16V 1mA 8MHz n/a 35mA n/a 8V/µs 2mV 80nA $1.02 16 V, 5-Channel, Rail - to - Rail Buffer Amplifier for LCD Monitor Applications
    ADD8504 6.5V 0.95mA n/a n/a 20mA 1nF 7V/µs 20mV 2nA $0.80 4 - Channel LCD Gamma Reference Buffer in 16 - Lead TSSOP
    ADD8505 6.5V 0.88mA n/a n/a 20mA 1nF 7V/µs 20mV 2nA $0.87 5 - Channel LCD Gamma Reference Buffer in 20 - Lead TSSOP
    ADD8506 6.5V 0.85mA n/a n/a 20mA 1nF 7V/µs 20mV 2nA $0.96 6 - Channel Muxed Input, LCD Gamma Reference Buffer in 24 - Lead TSSOP
    ADD8754 18V n/a 1.95MHz n/a 300mA n/a 105V/µs 19mV 50nA - VCOM Amplifier with LCD Panel Power & Gate Pulse Modulation Ciruitry
    AD8531 6V 1.25mA 3MHz 98dB 250mA 1nF 5V/µs 25mV 5pA $0.27 250 mA Output Current, Rail-Rail In/Out, Single-Supply Operational Amplifier
    AD8509 6.5V 944µA n/a n/a 20mA 1000pF 7V/µs 20mV 50nA $3.77 9-Channel, Multiplexed Input, LCD Driver
    AD8532 6V 1.25mA 3MHz 70dB 250mA 10nF 5V/µs 25mV 5pA $0.43 Dual, 250 mA Output Current, Rail-Rail In/Out, Single-Supply Operational Amplifier
    AD8511 6.5V 773µA n/a n/a 20mA 1000pF 7V/µs 20mV 50nA $3.99 11-Channel, Multiplexed Input, LCD Driver
    AD8534 6V 1.25mA 3MHz 70dB 250mA 10nF 5V/µs 25mV 5pA $0.60 Quad, 250 mA Output Current, Rail-Rail In/Out, Single-Supply Operational Amplifier
    AD8519 12V 1.2mA 8MHz 100dB 25mA 600pF 2.9V/µs 600µV 300nA $0.92 8 MHz, Rail-Rail Out, Operational Amplifier
    AD8529 12V 1.2mA 8MHz 100dB 25mA 600pF 2.9V/µs 600µV 300nA $1.22 Dual, 8 MHz, Rail-Rail Out, Operational Amplifier
    ADD8708 16.5V 0.9mA 4.5MHz n/a 150mA 200pF 6V/µs 5mV 500nA - 18 - Channel Gamma Buffer with Regulator
    ADD8701 16V 1mA 4.5MHz n/a 35mA n/a 6V/µs 4mV 500nA - Low Cost, 16 V, 12-Channel Gamma Buffer w/ Integrated High Drive Amplifier
    AD8565 16V 850µA 5MHz 80dB 35mA 1nF 6V/µs 2mV 600nA $0.56 16V, Single-Supply, Rail-Rail In/Out, Operational Amplifier
    AD8568 16V 850µA 6MHz n/a 35mA 1µF 6V/µs 2mV 600nA - Rail-Rail In/Out, Single-Supply Buffer Amplifier
    ADD8709 16.5V 0.94mA 4.5MHz n/a 15mA 200pF 6V/µs 5mV 1.5µA - 18-Channel Gamma Buffer with Regulator
    AD8566 16V 850µA 5MHz 80dB 35mA 1nF 6V/µs 2mV 600nA $0.71 16V, Single-Supply, Rail-Rail In/Out, Dual Operational Amplifier
    ADD8710 18V 0.91mA 5MHz n/a 10mA n/a 8V/µs 4mV 500nA $1.84 10-Channel Gamma Buffer with Vcom Driver
    AD8567 16V 850µA 5MHz 80dB 35mA 1nF 6V/µs 2mV 600nA $0.93 16V, Single-Supply, Rail-Rail In/Out, Quad Operational Amplifier
    ADD8706 16.5V 1.35mA 6MHz 80dB 15mA n/a 6V/µs 2mV 400nA - 16 V, (5 + 1)-Channel Operational Amplifier
    AD8614 18V 1.1mA 5.5MHz 100dB 30mA 2nF 7.5V/µs 1mV 80nA $1.15 Rail-Rail In/Out, 70 mA Output Current, Single-Supply Op Amp
    AD8024 24V 17mA 200MHz 280dB 50mA 1nF 390V/µs 2mV 1µA $4.32 Quad, 350 MHz, 24 V Amplifier
    AD8569 16V 850µA 6MHz n/a 35mA 1µF 6V/µs 2mV 600nA - Quad, Rail-Rail In/Out, Single-Supply Buffer Amplifier
    AD8641 26V 290µA 3.5MHz 103dB 12mA 500pF 3V/µs 50µV 0.25pA $1.47 Low Power, Rail-to-Rail Output Precision JFET Amplifier
    AD8644 18V 1.1mA 5.5MHz 100dB 30mA 2nF 7.5V/µs 1mV 80nA $2.30 Quad, Rail-Rail In/Out, 70 mA Output Current, Single-Supply Op Amp
    AD8570 16V 850µA 6MHz n/a 35mA 1µF 6V/µs 2mV 600nA - Octal, Rail-Rail In/Out, Single-Supply Buffer Amplifier

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    *The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
    **Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.

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