AD8656:  Low Noise, Precision CMOS Dual Amplifier

The AD8656 is one of the industry’s lowest noise, precision CMOS amplifiers. It leverages the Analog Devices DigiTrim® technology to achieve high dc accuracy.

The AD8656 provides low noise ...More

AD8656:  Low Noise, Precision CMOS Dual Amplifier

Product Description

The AD8656 is one of the industry’s lowest noise, precision CMOS amplifiers. It leverages the Analog Devices DigiTrim® technology to achieve high dc accuracy.

The AD8656 provides low noise (2.7 nV/√Hz @ 10 kHz), low THD + N (0.0007%), and high precision performance (250 μV max over VCM) to low voltage applications. The ability to swing rail-to-rail at the input and output enables designers to buffer analog-to-digital converters (ADCs) and other wide dynamic range devices in single-supply systems.

The high precision performance of the AD8656 improves the resolution and dynamic range in low voltage applications. Audio applications, such as microphone pre-amps and audio mixing consoles, benefit from the low noise, low distortion, and high output current capability of the AD8656 to reduce system level noise performance and maintain audio fidelity. The high precision and rail-to-rail input and output of the AD8656 benefit data acquisition, process controls, and PLL filter applications.

The AD8656 is fully specified over the −40°C to +125°C temperature range. The AD8656 is available in Pb-free, 8-lead MSOP and SOIC packages.

Features

  • Low Noise: 2.7 nV/√Hz @ f = 10 kHz
  • Low Offset Voltage: 250 V max over Vcm
  • Bandwidth: 28 MHz
  • Rail-to-rail Input and Output
  • Unity Gain Stable
  • 2.7 V to 5 V Operation
  • −40°C to +125°C Operation

Diagrams

AD8656 Diagram
Pin Configuration Diagram for AD8656

Specifications

-3dB Bandwidth 28MHz
Slew Rate 11V/µs
Vos 50µV
Ib 10pA
Input Noise (nV/rtHz) 4nV/rtHz
Vcc-Vee Supply (V) 2.7 to 5.5
Iq per Amplifier 4.5mA
# OpAmps per Pkg 2
Operating Temp Range -40 to +125
Packages SOIC,SOP

Explore Other Products

Part# Small Signal Bandwidth Slew Rate Vos Ib V Noise Density Amplifiers Per Package Widest Temp Range (°C)
AD8656 28MHz 11V/µs 50µV 10pA 4nV/rtHz 2 -40 to +125
AD8655 28MHz 11V/µs 50µV 10pA 4nV/rtHz 1 -40 to +125
AD8616 24MHz 12V/µs 23µV 200fA 6nV/rtHz 2 -40 to +125
ADA4841-2 80MHz 13V/µs 40µV 3µA 2.1nV/rtHz 2 -40 to +125
AD8599 10MHz 16.8V/µs 10µV 25nA 1.15nV/rtHz 2 -40 to +125
AD8618 24MHz 12V/µs 23µV 200fA 6nV/rtHz 4 -40 to +125
AD8620 25MHz 50V/µs 85µV 2pA 6nV/rtHz 2 -40 to +125
AD8652 50MHz 41V/µs 100µV 1pA 5nV/rtHz 2 -40 to +125
OP262 15MHz 13V/µs 25µV 260nA 9.5nV/rtHz 2 -40 to +125
ADA4841-1 80MHz 13V/µs 40µV 3µA 2.1nV/rtHz 1 -40 to +125
AD8646 24MHz 11V/µs 600µV 300fA 6nV/rtHz 2 -40 to +125
Pricing, Packaging & Availability

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Package Description
The package for this IC (i.e. DIP, SOIC, BGA). An Evaluation Board is a board engineered to show the performance of the model, the part is included on the board.

For detailed drawings and chemical composition please consult our  Package Site

Pin Count
Pin Count is the number of pins, balls, or pads on the device. Pin-out diagrams & pin function descriptions may be found in the datasheet.

Temperature Range
This is the acceptable operating range of the device. The various ranges specified are as follows:
  • Commercial: 0 to +70 degrees Celsius
  • Military : -55 to +125 degrees Celsius
  • Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
  • Automotive: -40 to +125 degrees Celsius
Price
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.

Production Availability
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Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.

RoHS Compliant
Due to environmental concerns, ADI offers many of our products in lead-free versions. For more information about lead-free parts, please consult our Pb (Lead) free information page.

*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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