Ultraprecision Operational Amplifier Data Sheet OP177 FEATURES PIN CONFIGURATION Ultralow offset voltage V TRIM 1 8 V TRIM OS OS TA = 25C, 25 V maximum OP177 IN 2 7 V+ Outstanding offset voltage drift 0.3 V/C maximum +IN 3 6 OUT Excellent open-loop gain and gain linearity TOP VIEW V 4 5 NC (Not to Scale) 12 V/V typical NC = NO CONNECT CMRR: 130 dB minimum Figure 1. 8-Lead PDIP (P-Suffix), PSRR: 115 dB minimum 8-Lead SOIC (S-Suffix) Low supply current 2.0 mA maximum Fits industry-standard precision op amp sockets GENERAL DESCRIPTION operational amplifier. The combination of outstanding specifications of the OP177 ensures accurate performance in The OP177 features one of the highest precision performance of high closed-loop gain applications. any op amp currently available. Offset voltage of the OP177 is only 25 V maximum at room temperature. The ultralow V of OS This low noise, bipolar input op amp is also a cost effective the OP177 combines with its exceptional offset voltage drift alternative to chopper-stabilized amplifiers. The OP177 (TCV ) of 0.3 V/C maximum to eliminate the need for OS provides chopper-type performance without the usual problems external VOS adjustment and increases system accuracy over of high noise, low frequency chopper spikes, large physical size, temperature. limited common-mode input voltage range, and bulky external storage capacitors. The OP177 open-loop gain of 12 V/V is maintained over the full 10 V output range. CMRR of 130 dB minimum, PSRR of The OP177 is offered in the 40C to +85C extended industrial 120 dB minimum, and maximum supply current of 2 mA are temperature ranges. This product is available in 8-lead PDIP, as just a few examples of the excellent performance of this well as the space saving 8-lead SOIC. FUNCTIONAL BLOCK DIAGRAM V+ (OPTIONAL NULL) R * R * 2A 2B C 1 R 7 R R 1A 1B Q 2B 19 Q Q 9 10 R 9 Q Q 11 12 Q Q 7 8 Q Q 3 Q Q OUTPUT 5 6 4 R C Q 3 C 2 17 3 NONINVERTING Q R 27 10 Q 16 INPUT Q 1 R Q 5 26 Q Q Q 21 23 20 Q 25 Q Q R 22 24 4 INVERTING Q 15 Q 2 INPUT Q 18 Q 14 Q R R 13 6 8 V *R AND R ARE ELECTRONICALLY ADJUSTED ON CHIP AT FACTORY. 2A 2B Figure 2. Simplified Schematic Rev. G 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 19952012 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Technical Support www.analog.com Trademarks and registered trademarks are the property of their respective owners. 00289-001 00289-002OP177 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Applications Information .................................................................9 Pin Configuration ............................................................................. 1 Gain Linearity ................................................................................9 General Description ......................................................................... 1 Thermocouple Amplifier with Cold-Junction Compensation ........................................................................................ 9 Functional Block Diagram .............................................................. 1 Precision High Gain Differential Amplifier ........................... 10 Revision History ............................................................................... 2 Isolating Large Capacitive Loads .............................................. 10 Specifications ..................................................................................... 3 Bilateral Current Source ............................................................ 10 Electrical Characteristics ............................................................. 3 Precision Absolute Value Amplifier ......................................... 10 Test Circuits ................................................................................... 4 Precision Positive Peak Detector .............................................. 12 Absolute Maximum Ratings ............................................................ 5 Precision Threshold Detector/Amplifier ................................ 12 Thermal Resistance ...................................................................... 5 Outline Dimensions ....................................................................... 13 ESD Caution .................................................................................. 5 Ordering Guide .......................................................................... 14 Typical Performance Characteristics ............................................. 6 REVISION HISTORY Changes to Figure 10 and Figure 11................................................ 6 9/12Rev. F to Rev. G Changes to Figure 12 through Figure 17 ........................................ 7 Changes to Features and General Description Section ............... 1 Changes to Figure 18 through Figure 22 ........................................ 8 Updated Outline Dimensions ....................................................... 13 Change to Figure 27 ....................................................................... 10 Changes to Ordering Guide .......................................................... 14 Changes to Figure 30 and Figure 31............................................. 11 3/09Rev. E to Rev. F Updated Outline Dimensions ....................................................... 13 Added Figure 23, Renumbered Sequentially ................................ 8 Changes to Ordering Guide .......................................................... 13 Updated Outline Dimensions ....................................................... 13 1/05Rev. B to Rev. C 5/06Rev. D to Rev. E Edits to Features .................................................................................1 Changes to Figure 1 .......................................................................... 1 Edits to General Description ........................................................... 1 Change to Specifications Table 1 .................................................... 3 Edits to Pin Connections .................................................................. 1 Changes to Specifications Table 2................................................... 4 Edits to Electrical Characteristics .............................................. 2, 3 Changes to Table 3 ............................................................................ 5 Global deletion of references to OP177E ............................ 3, 4, 10 Changes to Figure 23 and Figure 24 ............................................... 9 Edits to Absolute Maximum Ratings .............................................. 5 Changes to Figure 32 ...................................................................... 12 Edits to Package Type ....................................................................... 5 Updated the Ordering Guide ........................................................ 14 Edits to Ordering Guide ................................................................... 5 Edit to Outline Dimensions .......................................................... 11 4/06Rev. C to Rev. D 11/95Rev. 0: Initial Version Change to Pin Configuration Caption ........................................... 1 Changes to Features .......................................................................... 1 Change to Table 2 ............................................................................. 4 Change to Figure 2 ........................................................................... 4 Rev. G Page 2 of 16