18 V, Precision, 725 A, 4 MHz, CMOS RRIO Operational Amplifier Data Sheet ADA4661-2 FEATURES PIN CONNECTION DIAGRAMS Low power at high voltage (18 V): 725 A maximum OUT A 1 8 V+ IN A 2 ADA4661-2 7 OUT B Low offset voltage TOP VIEW +IN A 3 6 IN B 150 V maximum at V /2 (Not to Scale) SY V 4 5 +IN B 300 V maximum over entire common-mode range Low input bias current: 15 pA maximum Figure 1. 8-Lead MSOP Gain bandwidth product: 4 MHz typical at A = 100 V OUT A 1 8 V+ Unity-gain crossover: 4 MHz typical IN A 2 7 OUT B 3 dB closed-loop bandwidth: 2.1 MHz typical ADA4661-2 +IN A 3 6 IN B TOP VIEW Single-supply operation: 3 V to 18 V (Not to Scale) 5 +IN B V 4 Dual-supply operation: 1.5 V to 9 V Unity-gain stable NOTES 1. CONNECT THE EXPOSED PAD TO V OR LEAVE IT UNCONNECTED. APPLICATIONS Figure 2. 8-Lead LFCSP Current shunt monitors 250 Active filters V = 18V SY 200 Portable medical equipment Buffer/level shifting 150 High impedance sensor interfaces 100 Battery powered instrumentation 50 0 50 GENERAL DESCRIPTION 100 The ADA4661-2 is a dual, precision, rail-to-rail input/output amplifier optimized for low power, high bandwidth, and wide 150 operating supply voltage range applications. 200 The ADA4661-2 performance is guaranteed at 3.0 V, 10 V, 250 0 1.5 3.0 4.5 6.0 7.5 9.0 10.5 12.0 13.5 15.0 16.5 18.0 and 18 V power supply voltages. It is an excellent selection for V (V) CM applications that use single-ended supplies of 3.3 V, 5 V, 10 V, 12 Figure 3. Input Offset Voltage vs. Common-Mode Voltage V and 15 V, and dual supplies of 2.5 V, 3.3 V, and 5 V. It uses the Analog Devices, Inc., patented DigiTrim trimming Table 1. Precision Low Power Op Amps (<1 mA) technique, which achieves low offset voltage. Additionally, the Supply Voltage 5 V 12 V to 16 V 30 V unique design architecture of the ADA4661-2 allows it to have Single ADA4505-1 OP196 OP777 excellent power supply rejection, common-mode rejection, and AD8500 offset voltage when operating in the common-mode voltage Dual ADA4505-2 AD8657 ADA4096-2 range of V + 1.5 V to +V 1.5 V. SY SY AD8502 OP296 OP727 The ADA4661-2 is specified over the extended industrial AD8506 ADA4661-2 AD8682 temperature range (40C to +125C) and is available in ADA4666-2 AD8622 8-lead MSOP and 8-lead LFCSP (3 mm 3 mm) packages. Quad ADA4505-4 AD8659 ADA4096-4 AD8504 OP496 OP747 AD8508 AD8684 AD8624 Rev. 0 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 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 2013 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. Technical Support www.analog.com V (V) OS 11366-001 11366-002 11366-011ADA4661-2 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Input Stage ................................................................................... 22 Applications ....................................................................................... 1 Gain Stage .................................................................................... 23 General Description ......................................................................... 1 Output Stage ................................................................................ 23 Pin Connection Diagrams ............................................................... 1 Maximum Power Dissipation ................................................... 23 Revision History ............................................................................... 2 Rail-to-Rail Input and Output .................................................. 23 Specifications ..................................................................................... 3 Comparator Operation .............................................................. 24 Electrical Characteristics18 V Operation ............................. 3 EMI Rejection Ratio .................................................................. 25 Electrical Characteristics10 V Operation ............................. 5 Current Shunt monitor .............................................................. 25 Electrical Characteristics3.0 V Operation ............................ 7 Active Filters ............................................................................... 25 Absolute Maximum Ratings ............................................................ 9 Capacitive Load Drive ............................................................... 26 Thermal Resistance ...................................................................... 9 Noise Considerations with High Impedance Sources ........... 28 ESD Caution .................................................................................. 9 Outline Dimensions ....................................................................... 29 Pin Configurations and Function Descriptions ......................... 10 Ordering Guide .......................................................................... 29 Typical Performance Characteristics ........................................... 11 Applications Information .............................................................. 22 REVISION HISTORY 7/13Revision 0: Initial Version Rev. 0 Page 2 of 32