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OP176 Datasheet(PDF) 1 Page - Analog Devices |
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OP176 Datasheet(HTML) 1 Page - Analog Devices |
1 / 21 page One Technology Way, P.O. Box 9106, Norwood. MA 02062-9106, U.S.A. Tel: 617/329-4700 Fax: 617/326-8703 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 Bipolar/JFET, Audio Operational Amplifier OP176* FEATURES Low Noise: 6 nV/ √Hz High Slew Rate: 25 V/ µs Wide Bandwidth: 10 MHz Low Supply Current: 2.5 mA Low Offset Voltage: 1 mV Unity Gain Stable SO-8 Package APPLICATIONS Line Driver Active Filters Fast Amplifiers Integrators PIN CONNECTIONS 8-Lead Narrow-Body SO 8-Lead Epoxy DIP (S Suffix) (P Suffix) NULL –IN +IN V– NC V+ OUT NULL 1 2 3 45 6 7 8 OP176 1 2 3 45 6 7 8 NULL –IN +IN V– OP-482 NC V+ OUT NULL OP176 GENERAL DESCRIPTION The OP176 is a low noise, high output drive op amp that features 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 previous audio amplifiers, but at much lower supply currents. 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 OP176 to be used in many dc coupled or summing applications without the need for special selections or the added noise of additional offset adjustment circuitry. The output is capable of driving 600 Ω loads to 10 V rms while maintaining low distortion. THD + Noise at 3 V rms is a low 0.0006%. The OP176 is specified over the extended industrial (–40 °C to +85 °C) temperature range. OP176s are available in both plastic DIP and SO-8 packages. SO-8 packages are available in 2500 piece reels. Many audio amplifiers are not offered in SO-8 surface mount packages for a variety of reasons, however, the OP176 was designed so that it would offer full performance in surface mount packaging. *Protected by U.S. Patent No. 5101126. Simplified Schematic RB4 RB3 QB5 RB5 QB6 RB7 RB6 QB7 J1 R4 Q9 Q10 J2 Q2 Q1 Z2 Q6 Q5 CCB CF QS1 RS1 R5 6 RS2 QS2 R3 Q3 Q4 QS3 QB9 Q8 Q11 Q7 CC2 4 QB8 R2L R2P1 R2A R2P2 R2S 5 R1P2 1 R1P1 R1L R1A R1S QB3 Z1 QB1 JB1 QB4 CB1 QB2 RB1 RB2 CC1 3 2 7 |
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