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HomeProductsIntegrated Circuits (ICs)Linear - Amplifiers - Instrumentation, OP Amps, Buffer AmpsAD8642ARZ-REEL7
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AD8642ARZ-REEL7 - Analog Devices Inc.

Manufacturer Part Number
AD8642ARZ-REEL7
Manufacturer
Analog Devices, Inc.
Allelco Part Number
32D-AD8642ARZ-REEL7
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
6,270 pcs available, New & Original
Parts Description
IC OPAMP JFET 2 CIRCUIT 8SOIC
Package
8-SOIC
Data sheet
AD8642ARZ-REEL7.pdf

Other Related Documents

Tape and Reel Packaging.pdf
RoHs Status
ROHS3 Compliant
Compare
Our certification
In stock: 6270
  • Unit Price: $2.197
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $2.197 $2.20
10+ $1.913 $19.13
30+ $1.744 $52.32
100+ $1.466 $146.60
500+ $1.386 $693.00
1000+ $1.351 $1,351.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

AD8642ARZ-REEL7 Tech Specifications
Analog Devices Inc. - AD8642ARZ-REEL7 technical specifications, attributes, parameters and parts with similar specifications to Analog Devices Inc. - AD8642ARZ-REEL7

Product Attribute Attribute Value
Manufacturer Analog Devices, Inc.
Voltage - Supply Span (Min) 5 V
Voltage - Supply Span (Max) 26 V
Voltage - Input Offset 70 µV
Supplier Device Package 8-SOIC
Slew Rate 3V/µs
Series -
Package / Case 8-SOIC (0.154", 3.90mm Width)
Package Tape & Reel (TR)
Output Type Rail-to-Rail
Product Attribute Attribute Value
Operating Temperature -40°C ~ 125°C
Number of Circuits 2
Mounting Type Surface Mount
Gain Bandwidth Product 3.5 MHz
Current - Supply 200µA (x2 Channels)
Current - Output / Channel 12 mA
Current - Input Bias 0.25 pA
Base Product Number AD8642
Amplifier Type J-FET

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99

Parts Introduction

AD8642ARZ-REEL7 Image
AD8642ARZ-REEL7 (1)

Manufacturer Part Number

AD8642ARZ-REEL7

Manufacturer

Analog Devices, Inc.

Introduction

Dual Op-Amp Integrated Circuit (IC)

Designed for precision instrumentation and low-power applications

Product Features and Performance

Rail-to-Rail Output

Low Offset Voltage of 70 μV

Low Input Bias Current of 0.25 pA

High Gain Bandwidth of 3.5 MHz

Low Quiescent Current of 200 μA per Channel

Fast Slew Rate of 3 V/μs

Wide Supply Voltage Range from 5 V to 26 V

Wide Operating Temperature Range from -40°C to 125°C

Product Advantages

Excellent Precision and Low Noise Performance

Suitability for Portable, Battery-Powered, and Low-Power Applications

Versatile Operational Amplifier Design

AD8642ARZ-REEL7 Image
AD8642ARZ-REEL7 (2)

Key Technical Parameters

Package: 8-SOIC (0.154", 3.90mm Width)

Mounting Type: Surface Mount

Number of Circuits: 2

Output Type: Rail-to-Rail

Amplifier Type: J-FET

Quality and Safety Features

RoHS3 Compliant

Manufacturer's Packaging: Tape & Reel (TR)

Compatibility

Compatible with a wide range of electronic devices and systems

Application Areas

Precision Instrumentation

Low-Power Analog Circuits

Battery-Powered Devices

Industrial and Medical Equipment

Product Lifecycle

Current product, not nearing discontinuation

Replacement or upgraded versions may be available in the future

Key Reasons to Choose This Product

Excellent Precision and Low Noise Performance

Suitability for Portable, Battery-Powered, and Low-Power Applications

Wide Supply Voltage and Operating Temperature Range

Versatile Operational Amplifier Design

RoHS3 Compliance for Environmental Considerations

Frequently Asked Questions(FAQ)

How does the AD8642ARZ-REEL7 compare to general-purpose op-amps in low-noise precision applications, and what makes its J-FET input stage suitable for sensitive signal conditioning?
The AD8642ARZ-REEL7 offers significantly lower input bias current (0.25 pA) compared to standard bipolar-input amplifiers, making it ideal for high-impedance sensor interfaces where leakage currents could otherwise distort weak signals. Its 70 µV input offset voltage is competitive with precision amplifiers, and the rail-to-rail output enhances dynamic range in single-supply designs. While its gain bandwidth product of 3.5 MHz limits performance at higher frequencies, this trade-off enables superior DC accuracy and stability in instrumentation and measurement systems.
What are the key design considerations when using the AD8642ARZ-REEL7 in a dual-channel active filter configuration operating from a 5 V supply?
When implementing dual-channel active filters with the AD8642ARZ-REEL7 on a 5 V supply, designers must account for its 3.5 MHz gain-bandwidth product and 3 V/µs slew rate, which constrain achievable corner frequencies and transient response in higher-order filters. The 200 µA total supply current per channel affects power budget in battery-powered systems, while the 8-SOIC package provides adequate thermal performance for typical filter applications. Careful layout is essential due to the J-FET input’s sensitivity to electrostatic discharge, especially in industrial environments.
Can the AD8642ARZ-REEL7 be used in a single-supply photodiode transimpedance amplifier circuit without additional biasing components?
Yes, the AD8642ARZ-REEL7 supports single-supply operation from 5 V to 26 V, enabling direct integration into photodiode transimpedance stages without external biasing. Its rail-to-rail output swing allows full utilization of the supply headroom, and the ultra-low input bias current minimizes dark current effects in photodetector front ends. However, the feedback network must ensure stability given the device’s 3.5 MHz bandwidth, particularly when using large feedback resistors common in high-gain TIA configurations.
How does the supply current consumption of the AD8642ARZ-REEL7 impact system efficiency in a multi-channel data acquisition system?
With a quiescent current of 200 µA per channel, the AD8642ARZ-REEL7 consumes less than 1 mA for both channels combined—a significant advantage over bipolar-input amplifiers that may draw several milliamps. This low power profile reduces thermal load and extends battery life in portable DAQ systems. For example, in a 16-channel design using four AD8642ARZ-REEL7 devices, total static current would remain under 8 mA, minimizing cooling requirements and simplifying power supply design.
What layout and grounding practices should be followed when routing signals near the AD8642ARZ-REEL7 to preserve noise performance?
Due to its J-FET inputs and low 0.25 pA bias current, the AD8642ARZ-REEL7 is highly susceptible to capacitive coupling and electromagnetic interference. Keep guard traces around input lines, use star grounding at the amplifier’s reference point, and minimize trace lengths between input pins and source impedances. Avoid running digital lines parallel to analog paths, as even minor crosstalk can introduce errors in high-impedance circuits like pH probes or piezoelectric sensor interfaces.
Is the AD8642ARZ-REEL7 suitable for driving capacitive loads in motor control feedback loops without additional buffering?
The AD8642ARZ-REEL7 can drive moderate capacitive loads up to approximately 1 nF without compensation, thanks to its internal output stage design. However, beyond this threshold, phase margin degradation may occur, risking instability in feedback loops such as those found in current-sense amplifiers for motor drives. In such cases, adding a small series resistor (e.g., 10–50 Ω) at the output improves stability but increases power dissipation. The 12 mA output drive capability ensures sufficient current delivery even with capacitive loading.
How does the operating temperature range of -40°C to 125°C affect long-term reliability in automotive sensor conditioning applications using the AD8642ARZ-REEL7?
The wide operating range of the AD8642ARZ-REEL7 meets AEC-Q100 qualification requirements, ensuring stable performance across extreme environmental conditions. At elevated temperatures, input offset voltage may drift slightly due to semiconductor physics, though Analog Devices’ process control maintains consistency within datasheet specifications. The absence of electrolytic components and robust packaging support thermal cycling typical in engine bay deployments, making it a reliable choice for manifold absolute pressure sensors or exhaust gas monitoring systems.
What is the significance of the Moisture Sensitivity Level 1 designation for the AD8642ARZ-REEL7 in high-volume manufacturing?
MSL 1 indicates unlimited floor life for the AD8642ARZ-REEL7 under normal storage conditions, eliminating the need for bake-out cycles before reflow soldering. This simplifies assembly logistics and reduces production downtime in automated SMT lines, particularly beneficial for contract manufacturers handling large batches. Combined with RoHS3 compliance and ESD protection features intrinsic to the SOIC package, it supports efficient, environmentally compliant mass production without special handling protocols.
How does the AD8642ARZ-REEL7 compare to the AD8602 in terms of input type and suitability for FET-based sensor interfaces?
Unlike the AD8602, which uses a bipolar input stage, the AD8642ARZ-REEL7 employs J-FET inputs, resulting in drastically lower input bias current (0.25 pA vs. typically >1 nA). This makes the AD8642 more appropriate for interfacing with field-effect transistors or high-output-impedance capacitive sensors where charge injection and leakage dominate error sources. However, the AD8602 may offer lower input offset voltage in some units, depending on batch variation, and trades off speed for better DC precision in certain applications.
Can the AD8642ARZ-REEL7 replace a traditional op-amp in a unity-gain buffer configuration for a 24-bit ADC input stage?
Yes, the AD8642ARZ-REEL7 functions effectively as a unity-gain buffer in front of a 24-bit ADC, provided the ADC’s input capacitance is below 1 nF. Its rail-to-rail output ensures compatibility with unipolar ADCs running on 5 V logic levels, while the low offset (70 µV) and minimal drift help preserve resolution. However, ensure that the total closed-loop bandwidth meets the sampling rate requirements; with a GBW of 3.5 MHz, maximum usable sampling rates are limited to roughly 100 kSPS unless overdrive is acceptable.
What precautions should be taken during PCB assembly to avoid damaging the AD8642ARZ-REEL7 due to static discharge?
Although the AD8642ARZ-REEL7 lacks explicit ESD ratings in the datasheet, its J-FET inputs are vulnerable to gate oxide breakdown from static charges above ~100 mV. Use grounded wrist straps, ESD-safe workstations, and avoid handling directly by leads during placement. Prefer packages with built-in protection like TSSOP with ESD diodes, but if using SOIC, ensure proper grounding throughout the assembly chain. The Digi-Reel® packaging also includes anti-static materials to mitigate risk during automated pick-and-place.
How does the cut tape and Digi-Reel® packaging format influence inventory management and procurement strategy for the AD8642ARZ-REEL7?
The AD8642ARZ-REEL7 is available in both cut tape (CT) for prototyping and Digi-Reel® for high-volume manufacturing, allowing flexible sourcing strategies. Cut tape suits small-batch development with minimal lead time, while Digi-Reel® ensures compatibility with automated feeder systems and reduces handling errors in assembly. Both formats comply with IPC standards for surface-mount devices, simplifying integration into existing workflows without requiring custom reel adapters or manual sorting.

Parts with Similar Specifications

The three parts on the right have similar specifications to Analog Devices Inc. AD8642ARZ-REEL7

Product Attribute AD8641ARZ-REEL7 AD8642ARZ-REEL AD8642ARMZ-REEL AD8643ACPZ- REEL7
Part Number AD8641ARZ-REEL7 AD8642ARZ-REEL AD8642ARMZ-REEL AD8643ACPZ- REEL7
Manufacturer Analog Devices Inc. Analog Devices Inc. Analog Devices Inc. Analog Devices Inc.
Voltage - Input Offset - - - -
Voltage - Supply Span (Max) - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Amplifier Type - - - -
Gain Bandwidth Product - - - -
Voltage - Supply Span (Min) - - - -
Current - Supply - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Output Type - Current - Unbuffered Voltage - Buffered -
Current - Input Bias - - - -
Slew Rate - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Number of Circuits - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Current - Output / Channel - - - -
Series - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)

AD8642ARZ-REEL7 Datasheet PDF

Download AD8642ARZ-REEL7 pdf datasheets and Analog Devices Inc. documentation for AD8642ARZ-REEL7 - Analog Devices Inc..

Other Related Documents
Tape and Reel Packaging.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

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Brazil 7
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DHL & FedEx Shipment Charges Reference
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1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
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AD8642ARZ-REEL7 Image

AD8642ARZ-REEL7

Analog Devices Inc.
32D-AD8642ARZ-REEL7

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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