1 A Micropower CMOS Operational Amplifiers AD8502/AD8504 FEATURES PIN CONFIGURATIONS Supply current: 1 A maximum/amplifier OUT A 1 8 V+ Offset voltage: 3 mV maximum IN A 2 AD8502 7 OUT B Single-supply or dual-supply operation TOP VIEW +IN A 3 6 IN B (Not to Scale) Rail-to-rail input and output V 4 5 +IN B No phase reversal Unity gain stable Figure 1. 8-Lead SOT-23 1 OUT A 14 OUT D APPLICATIONS 2 13 IN A IN D Portable equipment 3 12 +IN A AD8504 +IN D Remote sensors TOP VIEW 4 11 V+ V (Not to Scale) Low power filters 5 10 +IN B +IN C Threshold detectors 6 9 IN B IN C Current sensing 7 8 OUT B OUT C Figure 2. 14-Lead TSSOP (RU-14) GENERAL DESCRIPTION without creating excessively large output offset errors. The The AD8502/AD8504 are low power, precision CMOS operational AD8502 and AD8504 offer an additional benefit by providing amplifiers featuring a maximum supply current of 1 A per high accuracy without the need for system calibration. amplifier. The AD8502/AD8504 have a maximum offset voltage of 3 mV and a typical input bias current of 1 pA operating rail- The AD8502/AD8504 are fully specified over the industrial to-rail on both the input and output. The AD8502/AD8504 can temperature range (40C to +85C) and the extended indus- operate from a single-supply voltage of +1.8 V to +5.5 V or a trial temperature range (40C to +125C). The AD8502 is dual-supply voltage of 0.9 V to 2.75 V. available in an 8-lead, SOT-23 surface-mount package. The AD8504 is available in a 14-lead TSSOP surface-mount package. With its low power consumption, low input bias current, and rail-to-rail input and output, the AD8502/AD8504 are ideally Table 1. Low Supply Current Op Amps suited for a variety of battery-powered portable applications. Supply Current 1 A 10 A 20 A Potential applications include bedside monitors, pulse monitors, Single AD8500 glucose meters, smoke and fire detectors, vibration monitors, Dual AD8502 ADA4505-2 AD8506 and backup battery sensors. Quad AD8504 ADA4505-4 AD8508 The ability to swing rail-to-rail at both the input and output helps maximize dynamic range and signal-to-noise ratio in systems that operate at very low voltages. The low offset voltage allows use of the AD8502/AD8504 in systems with high gain Rev. A 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 20072009 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. 06323-001 06323-038AD8502/AD8504 TABLE OF CONTENTS Features .............................................................................................. 1 Absolute Maximum Ratings ............................................................6 Applications ....................................................................................... 1 Thermal Resistance .......................................................................6 Pin Configurations ........................................................................... 1 ESD Caution...................................................................................6 General Description ......................................................................... 1 Typical Performance Characteristics ..............................................7 Revision History ............................................................................... 2 Outline Dimensions ....................................................................... 14 Specif icat ions ..................................................................................... 3 Ordering Guide .......................................................................... 14 Electrical Characteristics ............................................................. 3 REVISION HISTORY 2/09Rev. 0 to Rev. A Changes to General Description Section ...................................... 1 Added Table 1 Renumbered Sequentially .................................... 1 Changes to Typical Performance Characteristics Section ........... 7 Updated Outline Dimensions ....................................................... 14 1/07Revision 0: Initial Version Rev. A Page 2 of 16