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OP777 Datasheet(PDF) 1 Page - Analog Devices |
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OP777 Datasheet(HTML) 1 Page - Analog Devices |
1 / 12 page REV. 0 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 rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. a OP777 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 2000 Precision Micropower Single Supply Operational Amplifier FUNCTIONAL BLOCK DIAGRAMS 8-Lead MSOP (RM Suffix) IN IN V V+ OUT NC NC 1 45 8 OP777 NC NC = NO CONNECT 8-Lead SOIC (R Suffix) 1 2 3 4 8 7 6 5 OP777 IN V +IN V+ OUT NC NC NC NC = NO CONNECT FEATURES Low Offset Voltage: 100 V Max Low Input Bias Current: 10 nA Max Single-Supply Operation: 2.7 V to 30 V Dual-Supply Operation: 1.35 V to 15 V Low Supply Current: 270 A/Amp Unity Gain Stable No Phase Reversal APPLICATIONS Precision Current Measurement Line or Battery-Powered Instrumentation Remote Sensors Precision Filters GENERAL DESCRIPTION The OP777 is a precision single supply amplifier featuring micropower operation and rail-to-rail output ranges. This ampli- fier provides improved performance over the industry-standard OP07 with ±15 V supplies and offers the further advantage of true single supply operation down to 2.7 V, and smaller package footprint than any other high-voltage precision bipolar amplifier. Outputs are stable with capacitive loads of over 1000 pF. Supply current is less than 300 µA per amplifier at 5 V. 500 Ω series resis- tors protect the inputs, allowing input signal levels to exceed either power supply rail by up to 3 V without causing phase reversal of the output signal or causing damage to the amplifier. The proprietary fabrication process yields a very low-voltage noise corner frequency under 10 Hz, greatly improving the low-frequency noise perfor- mance of the OP07 and similar amplifiers. The specially fabricated input PNP transistors operate with very low input bias currents while allowing operation with large differential voltages, eliminating a common limitation of many precision amplifiers and enabling application of the OP777 in precision comparator and rectifier circuits. This large differential voltage capability also further reduces the need for external protection devices such as clamping diodes. Applications for these amplifiers include both line powered and portable instrumentation, remote sensor signal conditioning, and precision filters. The OP777 is specified over the extended industrial (–40 °C to +85 °C) temperature range and is available in 8-lead MSOP and 8-lead SOIC packages. The OP777 uses a standard operational amplifier pinout, allowing for easy drop-in replacement of lower performance amplifiers in most circuits. Surface mount devices in MSOP packages are available in tape and reel only. |
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