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Analog Devices Semiconductor Electronic Components Datasheet

OP275 Datasheet

Dual Bipolar/JFET / Audio Operational Amplifier

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Dual Bipolar/JFET, Audio
Operational Amplifier
OP275
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
8-Lead Narrow-Body SOIC
(S Suffix)
8-Lead PDIP
(P Suffix)
OUT A 1
–IN A 2
+IN A 3
V– 4
OP275
8 V+
7 OUT B
6 –IN B
5 +IN B
OUT A 1
–IN A 2
+IN A 3
V– 4
OP275 8 V+
7 OUT B
6 –IN B
5 +IN B
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.
REV. C
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.


Analog Devices Semiconductor Electronic Components Datasheet

OP275 Datasheet

Dual Bipolar/JFET / Audio Operational Amplifier

No Preview Available !

OP275* PRODUCT PAGE QUICK LINKS
Last Content Update: 06/09/2017
COMPARABLE PARTS
View a parametric search of comparable parts.
EVALUATION KITS
EVAL-OPAMP-2 Evaluation Board
DOCUMENTATION
Application Notes
AN-211: The Alexander Current-Feedback Audio Power
Amplifier
AN-356: User's Guide to Applying and Measuring
Operational Amplifier Specifications
AN-649: Using the Analog Devices Active Filter Design
Tool
Data Sheet
OP275: Dual Bipolar/JFET, Audio Operational Amplifier
Data Sheet
TOOLS AND SIMULATIONS
Analog Filter Wizard
Analog Photodiode Wizard
OP275 SPICE Macro Models
DESIGN RESOURCES
OP275 Material Declaration
PCN-PDN Information
Quality And Reliability
Symbols and Footprints
DISCUSSIONS
View all OP275 EngineerZone Discussions.
SAMPLE AND BUY
Visit the product page to see pricing options.
TECHNICAL SUPPORT
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number.
DOCUMENT FEEDBACK
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Part Number OP275
Description Dual Bipolar/JFET / Audio Operational Amplifier
Maker Analog Devices
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OP275 Datasheet PDF






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