Micropower Precision CMOS Operational Amplifier AD8500 FEATURES PIN CONFIGURATION Supply current: 1 A maximum OUT A 1 5 V+ Offset voltage: 1 mV maximum AD8500 V 2 TOP VIEW Single-supply or dual-supply operation (Not to Scale) +IN 3 4 IN Rail-to-rail input and output No phase reversal Figure 1. 5-Lead SC70 Unity gain stable APPLICATIONS Portable equipment Remote sensors Low power filters Threshold detectors Current sensing GENERAL DESCRIPTION The AD8500 is a low power, precision CMOS op amp featuring The ability to swing rail-to-rail at both the input and output a maximum supply current of 1 A. The AD8500 has a maximum helps maximize dynamic range and signal-to-noise ratio in offset voltage of 1 mV and a typical input bias current of 1 pA it systems that operate at very low voltages. The low offset voltage operates rail-to-rail on both the input and output. The AD8500 allows the AD8500 to be used in systems with high gain without can operate from a single-supply voltage of +1.8 V to +5.5 V or having excessively large output offset errors, and it provides a dual-supply voltage of 0.9 V to 2.75 V. high accuracy without the need for system calibration. With its low power consumption, low input bias current, and The AD8500 is fully specified over the industrial temperature rail-to-rail input and output, the AD8500 is ideally suited for range (40C to +85C) and is operational over the extended a variety of battery-powered portable applications. Potential industrial temperature range (40C to +125C). It is available applications include ECGs, pulse monitors, glucose meters, in a 5-lead, SC70 surface-mount package. smoke and fire detectors, vibration monitors, and backup Table 1. Low Supply Current Op Amps battery sensors. Supply Current 1 A 10 A 20 A Single AD8500 Dual AD8502 ADA4505-2 AD8506 Quad AD8504 ADA4505-4 AD8508 Rev. B 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 www.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Fax: 781.461.3113 20062009 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. 06005-001AD8500 TABLE OF CONTENTS Features .............................................................................................. 1 Absolute Maximum Ratings ............................................................5 Applications ....................................................................................... 1 Thermal Resistance .......................................................................5 General Description ......................................................................... 1 ESD Caution...................................................................................5 Pin Configuration ............................................................................. 1 Typical Performance Characteristics ..............................................6 Revision History ............................................................................... 2 Outline Dimensions ....................................................................... 12 Specif icat ions ..................................................................................... 3 Ordering Guide .......................................................................... 12 Electrical Characteristics ............................................................. 3 REVISION HISTORY 2/09Rev. A to Rev. B Added Table 1 Renumbered Sequentially .................................... 1 Changes to Typical Performance Characteristics Section ........... 6 8/06Rev. 0 to Rev. A Updated Format .................................................................. Universal Changes to Figure 17, Figure 18, and Figure 19 ........................... 8 4/06Revision 0: Initial Version Rev. B Page 2 of 12