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AD8642:  Low Power, Rail-to-Rail Output Precision JFET Dual Amplifier in 8-lead MSOP 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 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 ...More

AD8642:  Low Power, Rail-to-Rail Output Precision JFET Dual Amplifier in 8-lead MSOP 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

    • RESOURCES & TOOLS

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    • 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
    • Iq per Amplifier: 290µA
    • # OpAmps per Pkg: 2
    • Operating Temp Range: -40 to +125
    • Packages: SOIC,SOP
    • -3dB Bandwidth: 3.5MHz
    • Slew Rate: 3V/µs
    • Vos: 50µV
    • Ib: 0.25pA
    • Input Noise (nV/rtHz): 27.5nV/rtHz
    • Vcc-Vee Supply (V): 5 to 26

    Pin Configuration Diagram for AD8642

    Similar Products

    arrow View Full Interactive Product Selection Table
    Part# Small Signal Bandwidth Slew Rate Vos Ib V Noise Density Amplifiers Per Package Widest Temp Range (°C)
    AD8642 3.5MHz 3V/µs 50µV 250fA 27.5nV/rtHz 2 -40 to +125
    AD8606 10MHz 5V/µs 20µV 200fA 6.5nV/rtHz 2 -40 to +125
    AD8616 24MHz 12V/µs 23µV 200fA 6nV/rtHz 2 -40 to +125
    AD8608 10MHz 5V/µs 20µV 200fA 6.5nV/rtHz 4 -40 to +125
    AD8641 3.5MHz 3V/µs 50µV 250fA 27.5nV/rtHz 1 -40 to +125
    AD8643 3.5MHz 3V/µs 50µV 250fA 27.5nV/rtHz 4 -40 to +125
    AD8605 10MHz 5V/µs 20µV 200fA 6.5nV/rtHz 1 -40 to +125
    AD8672 10MHz 4V/µs 20µV 3nA 2.8nV/rtHz 2 -40 to +125
    AD8599 10MHz 16.8V/µs 10µV 25nA 1.15nV/rtHz 2 -40 to +125
    OP262 15MHz 13V/µs 25µV 260nA 9.5nV/rtHz 2 -40 to +125
    AD8692 10MHz 5V/µs 400µV 200fA 8nV/rtHz 2 -40 to +125
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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.