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AD8642ARMZ-REEL
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Product Detailed Parameters
- Description：IC OPAMP JFET 2 CIRCUIT 8MSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Amplifier Type：J-FET
- Number of Circuits：2
- Output Type：Rail-to-Rail
- Slew Rate：3V/µs
- Gain Bandwidth Product：3.5 MHz
- Current - Input Bias：0.25 pA
- Voltage - Input Offset：70 µV
- Current - Supply：200µA (x2 Channels)
- Current - Output / Channel：12 mA
- Voltage - Supply Span (Min)：5 V
- Voltage - Supply Span (Max)：26 V
- Operating Temperature：-40°C ~ 125°C
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Supplier Device Package：8-MSOP
- -3db Bandwidth：-
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Overview
The AD8642ARMZ-REEL is a dual-channel, low-power precision JFET operational amplifier manufactured by Analog Devices Inc. It features rail-to-rail output capability and operates on single supplies from 5 V to 26 V or dual supplies of ±2.5 V to ±13 V. Key electrical specifications include a maximum supply current of 250 μA per amplifier, an input bias current of 1 pA maximum, and a gain-bandwidth product of 3 MHz. The device is unity-gain stable with no phase reversal and supports operation across an extended industrial temperature range of −40°C to +125°C.
Feature Summary
- Extremely low input bias current for high-impedance signal integrity
- Rail-to-rail output swing maximizes dynamic range in single-supply systems
- Low power consumption suitable for battery-powered applications
- Unity-gain stability without phase reversal
Applications
- Photodiode amplifiers
- Line- or battery-powered instruments
- Precision current sensing
- Medical instrumentation
- Industrial controls
Procurement Notes
Verify the specific ordering suffix REEL against the manufacturer's official documentation to confirm tape-and-reel packaging compliance. Ensure the component meets RoHS standards as indicated by the Z suffix. Cross-reference the part number with the latest datasheet revision to validate performance parameters before procurement.
Selection Notes
Select this component when low quiescent current and high input impedance are required. The dual-channel configuration reduces board space compared to single-channel alternatives. Verify that the 3 MHz bandwidth and 2 V/μs slew rate meet the AC performance requirements of the target application circuit.
Part Context
This component belongs to the AD864x family of precision amplifiers, which includes single (AD8641), dual (AD8642), and quad (AD8643) channel variants. All members share identical core electrical characteristics but differ in package options and channel counts to suit various integration needs.
Replacement Considerations
The AD8642ARZ-REEL serves as a direct pin-compatible alternative within the same series, differing only in the SOIC-8 package instead of MSOP-8.
FAQ
Does the AD8642 support input voltages beyond the supply rails?
No, the input voltage range is limited to the supply rails (VS− to VS+). It does not feature over-the-top input capability.
Is the AD8642ARMZ-REEL capable of driving capacitive loads?
Yes, the outputs remain stable with capacitive loads exceeding 500 pF.
