OP176 Datasheet, PDF (1/21 Pages) Analog Devices – Bipolar/JFET, Audio Operational Amplifier

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
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
*Protected by U.S. Patent No. 5101126.
PIN CONNECTIONS
8-Lead Narrow-Body SO
(S Suffix)
8-Lead Epoxy DIP
(P Suffix)
NULL 1
–IN 2
+IN 3
V– 4
OP176
8 NC
7 V+
6 OUT
5 NULL
NULL 1
–IN 2
+IN ₃
V– 4
OP176
OP-482
8 NC
7 V+
6 OUT
5 NULL
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.
7
RB2
QB4
RB4
RB3
QB5
RB5
QB6
RB7
RB6
QB7
CB1
QB3
J1
Q1
Z2
2
J2
Q2
3
JB1
QB2
Q5
Q3
RB1
QB1
Z1
R1L
R1P1
QB8
CC1
R1A R1P2
R1S R2S
Q4
QS3
R2P1 R2L
R2P2 R2A
CCB
Q6
CF
R3
QB9
R4
Q10
QS1
Q9
RS1
R5
6
CC2
Q8
Q11
RS2
QS2
Q7
1
5
4
REV. 0
Simplified Schematic
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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.
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