OP176GS Analog Devices, OP176GS Datasheet

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OP176GS

Manufacturer Part Number
OP176GS
Description
Manufacturer
Analog Devices
Datasheet

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OP176GS
Manufacturer:
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Quantity:
20 000
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OP176GSZ
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a
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.
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.
FEATURES
Low Noise: 6 nV/ Hz
High Slew Rate: 25 V/ s
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
JB1
Z1
CB1
QB4
QB1
QB2
RB1
RB2
QB3
CC1
2
R1A
R1L
J1
Q3
R1P2
Q1
RB4
RB3
R1P1
QB5
1
R1S
Z2
Q5
QB8
Simplified Schematic
R2S
QB6
RB5
5
Q2
R2P1
R2P2
Q4
200 V. 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
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.
One Technology Way, P.O. Box 9106, Norwood. MA 02062-9106, U.S.A.
Tel: 617/329-4700
RB7
8-Lead Narrow-Body SO
J2
R2A
R2L
NULL
QS3
+IN
–IN
V–
3
Audio Operational Amplifier
2
3
1
4
(S Suffix)
OP176
QB9
Q6
R3
CCB
CF
PIN CONNECTIONS
7
8
6
5
V+
NC
OUT
NULL
Q8
Q9
Q7
QB7
RB6
R4
CC2
NULL
–IN
+IN
V–
7
4
Q10
Q11
8-Lead Epoxy DIP
RS1
Bipolar/JFET,
1
2
3
4
loads to 10 V rms while
(P Suffix)
OP-482
OP176
QS1
OP176*
QS2
RS2
R5
Fax: 617/326-8703
6
7
5
8
6
V+
OUT
NULL
NC

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OP176GS Summary of contents

Page 1

... Z1 CC1 R1A 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. ...

Page 2

OP176–SPECIFICATIONS ELECTRICAL CHARACTERISTICS Parameter INPUT CHARACTERISTICS Offset Voltage Offset Voltage Input Bias Current Input Offset Current Input Voltage Range Common-Mode Rejection Large Signal Voltage Gain Offset Voltage Drift OUTPUT CHARACTERISTICS Output Voltage Swing Output Short Circuit Current POWER SUPPLY Power ...

Page 3

... Model Temperature Range OP176GP – +85 C OP176GS – +85 C OP176GSR – +85 C OP176GBC +25 C CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the OP176 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges ...

Page 4

OP176–Typical Characteristics 120 100 80 BASED ON 300 OP AMPS – V/° Figure 1. Input Offset Voltage Drift Distribution @ 18V, ...

Page 5

SINK 60 SOURCE –50 – TEMPERATURE – °C Figure 7. Short Circuit Current vs. Temperature @ 15 V 120 100 80 GAIN 60 40 PHASE 20 0 PHASE MARGIN = ...

Page 6

OP176 140 120 100 100 1k 10k FRERQUENCY – Hz Figure 13. Common-Mode Rejection vs. Frequency 100 V = 15V NEGATIVE SWING V = 100mVp ...

Page 7

V = 15V +25° 100 FREQUENCY – Hz Figure 19. Voltage Noise Density vs. Frequency 100 90 V OUT (50mV/DIV 50mV TIME –100ns/DIV Figure 20. Small Signal ...

Page 8

OP176 APPLICATIONS Short Circuit Protection The OP176 has been designed with output short circuit protection. The typical output drive current is 50 mA. This high output current and wide output swing combine to yield an excellent audio amplifier, even when ...

Page 9

Noise The voltage noise density of the OP176 is below 6 nV/ Hz from 30 Hz. This enables low noise designs to have good perfor- mance throughout the full audio range. Figure 27 shows a typical OP176 with a 1/f ...

Page 10

OP176 Output Voltage Phase Reversal Since the OP176’s input stage combines bipolar transistors for low noise and p-channel JFETs for high speed performance, the output voltage of the OP176 may exhibit phase reversal if either of its inputs exceeds the ...

Page 11

Attention to Source Impedances Minimizes Distortion Since the OP176 is a very low distortion amplifier, careful attention should be given to source impedances seen by both inputs. As with many FET-type amplifiers, the p-channel JFETs in the OP176’s input stage ...

Page 12

... V supplies. For a complete treatment of the circuit design details, the interested reader should consult application note AN-242, available from Analog Devices. This amplifier’s performance is quite good over programmed gain ranges 2000. For a typical audio load of 600 , THD + N at various gains and an output level rms is illustrated in Figure 40 ...

Page 13

A Low Noise, +5 V/+10 V Reference In many high resolution applications, voltage reference noise can be a major contributor to overall system error. Monolithic voltage references often exhibit too much wide band noise to be used alone in these ...

Page 14

OP176 An RIAA Phono Preamp Figure 43 illustrates a simple phono preamplifier using RIAA equalization. The OP176 is used here to provide gain and is chosen for its low input voltage noise and high speed perfor- mance. The feedback equalization ...

Page 15

High Pass Sections Figure 44a illustrates the high-pass form of a 2-pole SK filter using an OP176. For simplicity and practicality, capacitors C1 and C2 are set equal (“C”), and resistors R2 and R1 are adjusted to a ratio, N, ...

Page 16

OP176 Passive Component Selection for Active Filters The passive components suitable for active filters deserve more than casual attention. Resistors should be 1%, low TC, metal- film types of the RN55 or RN60 style. Capacitors should ...

Page 17

CM2 – +IN CM1 ...

Page 18

OP176 OP176 SPICE Model * * Node Assignments * Noninverting Input * | Inverting Input * | | Positive Supply * | | | Negative Supply * | | | | * | | | | * | | | ...

Page 19

REV. 0 OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 8-Lead Plastic DIP (N- 0.280 (7.11) PIN 1 0.240 (6.10 0.325 (8.25) 0.430 (10.92) 0.300 (7.62) 0.348 (8.84) 0.060 (1.52) 0.210 0.015 (0.38) (5.33) MAX 0.130 ...

Page 20

–20– ...

Page 21

... Model Temperature Range OP176GP – +85 C OP176GS – +85 C OP176GSR – +85 C OP176GBC +25 C *For outline information see Package Information section. REV. 0 FOR CATALOG ORDERING GUIDE Package Description Package Option* 8-Pin Plastic DIP N-8 8-Pin SOIC SO-8 SO-8 Reel, 2500 Pieces DICE – ...

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