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OP275GS-REEL 데이터시트(PDF) 1 Page - Analog Devices |
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OP275GS-REEL 데이터시트(HTML) 1 Page - Analog Devices |
1 / 12 page 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 that may result from its use. No license is granted by implication or oth- erwise under any patent or patent rights of Analog Devices.Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 www.analog.com Fax: 781/326-8703 © 2004 Analog Devices, Inc. All rights reserved. OP275* Dual Bipolar/JFET, Audio Operational Amplifier FEATURES Excellent Sonic Characteristics Low Noise: 6 nV/Hz Low Distortion: 0.0006% High Slew Rate: 22 V/s Wide Bandwidth: 9 MHz Low Supply Current: 5 mA Low Offset Voltage: 1 mV Low Offset Current: 2 nA Unity Gain Stable SOIC-8 Package PDIP-8 Package APPLICATIONS High Performance Audio Active Filters Fast Amplifiers Integrators PIN CONNECTIONS GENERAL DESCRIPTION The OP275 is the first amplifier to feature the Butler Amplifier front end. This new front end design combines both bipolar and JFET transistors to attain amplifiers with the accuracy and low noise performance of bipolar transistors, and the speed and sound quality of JFETs. Total Harmonic Distortion plus Noise equals that of previous audio amplifiers, but at much lower supply currents. A very low l/f corner of below 6 Hz maintains a flat noise density response.Whether noise is measured at either 30 Hz or 1 kHz, it is only 6 nVHz.The JFET portion of the input stage gives the OP275 its high slew rates to keep distortion low, even when large output swings are required, and the 22 V/µs slew rate of the OP275 is the fastest of any standard audio amplifier. Best of all, this low noise and high speed are accomplished using less than 5 mA of supply current, lower than any standard audio amplifier. Improved dc performance is also provided with bias and offset currents greatly reduced over purely bipolar designs. Input offset voltage is guaranteed at 1 mV and is typically less than 200 µV. This allows the OP275 to be used in many dc-coupled or sum- ming applications without the need for special selections or the added noise of additional offset adjustment circuitry. The output is capable of driving 600 loads to 10 V rms while maintaining low distortion.THD + Noise at 3 V rms is a low 0.0006%. The OP275 is specified over the extended industrial (–40°C to +85°C) temperature range. OP275s are available in both plas- tic DIP and SOIC-8 packages. SOIC-8 packages are available in 2500-piece reels. Many audio amplifiers are not offered in SOIC-8 surface-mount packages for a variety of reasons; however, the OP275 was designed so that it would offer full performance in surface-mount packaging. 8-Lead Narrow-Body SOIC (S Suffix) OP275 OUT A –IN A +IN A V– OUT B –IN B +IN B V+ 1 2 3 4 5 6 7 8 8-Lead PDIP (P Suffix) 1 2 3 4 8 7 6 5 OP275 OUT B –IN B +IN B V+ OUT A –IN A +IN A V– * Protected by U.S. Patent No. 5,101,126. REV. C |
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