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AD8656 Dataheets PDF



Part Number AD8656
Manufacturers Analog Devices
Logo Analog Devices
Description (AD8655 / AD8656) Precision CMOS Amplifier
Datasheet AD8656 DatasheetAD8656 Datasheet (PDF)

Data Sheet FEATURES Low noise: 2.7 nV/√Hz at f = 10 kHz Low offset voltage: 250 µV max over VCM Offset voltage drift: 0.4 µV/°C typ and 2.3 µV/°C max Bandwidth: 28 MHz Rail-to-rail input/output Unity gain stable 2.7 V to 5.5 V operation −40°C to +125°C operation Qualified for automotive applications APPLICATIONS ADC and DAC buffers Audio Industrial controls Precision filters Digital scales Automotive collision avoidance PLL filters GENERAL DESCRIPTION The AD8655/AD8656 are the industry’s lowest .

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Data Sheet FEATURES Low noise: 2.7 nV/√Hz at f = 10 kHz Low offset voltage: 250 µV max over VCM Offset voltage drift: 0.4 µV/°C typ and 2.3 µV/°C max Bandwidth: 28 MHz Rail-to-rail input/output Unity gain stable 2.7 V to 5.5 V operation −40°C to +125°C operation Qualified for automotive applications APPLICATIONS ADC and DAC buffers Audio Industrial controls Precision filters Digital scales Automotive collision avoidance PLL filters GENERAL DESCRIPTION The AD8655/AD8656 are the industry’s lowest noise, precision CMOS amplifiers. They leverage the Analog Devices DigiTrim® technology to achieve high dc accuracy. The AD8655/AD8656 provide low noise (2.7 nV/√Hz at 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. Low Noise, Precision CMOS Amplifier AD8655/AD8656 05304-048 05304-059 PIN CONFIGURATIONS NC 1 –IN 2 +IN 3 V– 4 AD8655 TOP VIEW (Not to Scale) 8 NC 7 V+ 6 OUT 5 NC NC = NO CONNECT Figure 1. AD8655 8-Lead MSOP (RM-8) 8-Lead SOIC (R-8) OUT A 1 –IN A 2 +IN A 3 V– 4 AD8656 TOP VIEW (Not to Scale) 8 V+ 7 OUT B 6 –IN B 5 +IN B Figure 2. AD8656 8-Lead MSOP (RM-8) 8-Lead SOIC (R-8) The high precision performance of the AD8655/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 AD8655/AD8656 to reduce system level noise performance and maintain audio fidelity. The high precision and rail-to-rail input and output of the AD8655/ AD8656 benefit data acquisition, process controls, and PLL filter applications. The AD8655/AD8656 are fully specified over the −40°C to +125°C temperature range. The AD8655/AD8656 are available in Pb-free, 8-lead MSOP and SOIC packages. The AD8655/ AD8656 are both available for automotive applications. Rev. E Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 ©2005–2013 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com AD8655/AD8656 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Pin Configurations ........................................................................... 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 5 ESD Caution.................................................................................. 5 Typical Performance Characteristics ............................................. 6 Theory of Operation ...................................................................... 15 Applications Information .............................................................. 16 REVISION HISTORY 10/13—Rev. D to Rev. E Changes to Figure 1 Caption and Figure 2 Caption .................... 1 Deleted Figure 3 and Figure 4; Renumbered Sequentially ......... 1 Change to General Description Section ........................................ 1 Change to Figure 4 ........................................................................... 6 Change to Figure 32 ....................................................................... 10 Changes to Ordering Guide .......................................................... 19 Changes to Automotive Products Section................................... 19 6/13—Rev. C to Rev. D Change to Figure 57 ....................................................................... 16 5/13—Rev. B to Rev. C Change to Figure 57 ....................................................................... 16 9/11—Rev. A to Rev. B Changes to Features Section............................................................ 1 Updated Outline Dimensions ....................................................... 19 Changes to Ordering Guide .......................................................... 19 .


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