ANALOG DEVICES AD8659 Service Manual
18V CMOS RRIO Op Amp
AD8659
Rev. PrA
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Fax: 781.461.3113 ©2010 Analog Devices, Inc. All rights reserved.
AD8603
AD8506
Quad
AD8504
AD8669
OP495
Preliminary Technical Data
FEATURES
Micropower at high voltage (18 V): 18 μA typical
Low offset voltage: 350 µV maximum
Single-supply operation: 2.7 V to 18 V
Dual-supply operation: ±1.35 V to ±9 V
Low input bias current: 20 pA
Gain bandwidth: 200 kHz
Unity-gain stable
Excellent electromagnetic interference immunity
APPLICATIONS
Portable operating systems
Current monitors
4 mA to 20 mA loop drivers
Buffer/level shifting
Multipole filters
Remote/wireless sensors
Low power transimpedance amplifiers
Precision, Micropower
PIN CONFIGURATION
GENERAL DESCRIPTION
The AD8659 is a Quad, micropower, precision, rail-to-rail
input/output amplifier optimized for low power and wide
operating supply voltage range applications.
The AD8659 operates from 2.7 V up to 18 V with a typical
quiescent supply current of 18 μA. It uses Analog Devices, Inc.,
patented DigiTrim® trimming technique, which achieves low
offset voltage. The AD8659 also has high immunity to
electromagnetic interference.
The combination of low supply current, low offset voltage, very
low input bias current, wide supply range, and rail-to-rail input
and output make the AD8659 ideal for current monitoring and
current loops in process and motor control applications. The
combination of precision specifications makes this device ideal
for dc gain and buffering of sensor front ends or high impedance
input sources in wireless or remote sensors or transmitters.
Table 1. Micropower Op Amps
Supply Voltage 5 V 12 V to 16 V 36 V
Single AD8500 AD8663
ADA4505-1
AD8505
AD8541
Dual AD8502 AD8667 OP295
ADA4505-2 OP281 ADA4062-2
AD8542
AD8607
ADA4505-4 OP481 ADA4062-4
AD8508
AD8544
AD8609
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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.
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Tel: 781.329.4700
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AD8659 Preliminary Technical Data
Rev. PrA | Page 2 of 8
Preliminary Technical Data AD8659
TABLE OF CONTENTS
Features ............................................................................................... 1
Applications ....................................................................................... 1
Pin Configuration ............................................................................. 1
General Description .......................................................................... 1
Revision History ........................... Error! Bookmark not defined.
Specifications ..................................................................................... 4
Electrical Characteristics—2.7 V Operation ............................. 4
Electrical Characteristics—10 V Operation .............................. 5
Electrical Characteristics—18 V Operation .............................. 6
Absolute Maximum Ratings ............................................................ 7
Thermal Resistance ....................................................................... 7
ESD Caution .................................................................................. 7
Typical Performance Characteristics .........
Applications Information ............
Input Stage ................................
Output Stage .............................
Rail to rail ..................................
Resistive load ............................
Comparator Operation............
EMI Rejection ratio .................
mA to 20 mA Process Control Current Loop Transmitter
4
....................................................
O
utline Dimensions .....................
Ordering Guide ...............................................................................
Rev. PrA | Page 3 of 8
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