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OP177FS-REEL7 Datasheet(PDF) 1 Page - Analog Devices |
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OP177FS-REEL7 Datasheet(HTML) 1 Page - Analog Devices |
1 / 16 page Ultraprecision Operational Amplifier OP177 Rev. E Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2006 Analog Devices, Inc. All rights reserved. FEATURES Ultralow offset voltage TA = 25°C, 25 μV maximum Outstanding offset voltage drift 0.1 μV/°C maximum Excellent open-loop gain and gain linearity 12 V/μV typical CMRR: 130 dB minimum PSRR: 115 dB minimum Low supply current 2.0 mA maximum Fits industry-standard precision op amp sockets PIN CONFIGURATION 8 7 6 5 1 2 3 4 NC = NO CONNECT –IN +IN V+ OUT NC V– VOS TRIM VOS TRIM OP177 TOP VIEW (Not to Scale) Figure 1. 8-Lead PDIP (P-Suffix), 8-Lead SOIC (S-Suffix) GENERAL DESCRIPTION The OP177 features one of the highest precision performance of any op amp currently available. Offset voltage of the OP177 is only 25 μV maximum at room temperature. The ultralow VOS of the OP177 combines with its exceptional offset voltage drift (TCVOS) of 0.1 μV/°C maximum to eliminate the need for external VOS adjustment and increases system accuracy over temperature. The OP177 open-loop gain of 12 V/μV is maintained over the full ±10 V output range. CMRR of 130 dB minimum, PSRR of 120 dB minimum, and maximum supply current of 2 mA are just a few examples of the excellent performance of this operational amplifier. The combination of outstanding specifications of the OP177 ensures accurate performance in high closed-loop gain applications. This low noise, bipolar input op amp is also a cost effective alternative to chopper-stabilized amplifiers. The OP177 provides chopper-type performance without the usual problems of high noise, low frequency chopper spikes, large physical size, limited common-mode input voltage range, and bulky external storage capacitors. The OP177 is offered in the −40°C to +85°C extended industrial temperature ranges. This product is available in 8-lead PDIP, as well as the space saving 8-lead SOIC. FUNCTIONAL BLOCK DIAGRAM 2B C1 R7 (OPTIONAL NULL) Q19 R2B* R2A* R1B R1A R9 R10 OUTPUT R8 R6 C3 C2 Q13 Q17 R5 Q27 Q26 Q25 Q8 Q7 Q23 Q24 Q21 Q22 Q9 Q4 Q6 Q3 Q5 R3 R4 Q1 Q2 Q11 Q12 Q14 Q10 Q16 Q15 Q18 Q20 V+ V– NONINVERTING INPUT INVERTING INPUT *R2A AND R2B ARE ELECTRONICALLY ADJUSTED ON CHIP AT FACTORY. Figure 2. Simplified Schematic |
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