OP179 Datasheet PDF - Analog Devices
| Part Number | OP179 | |
| Description | Rail-to-Rail High Output Current Operational Amplifiers | |
| Manufacturers | Analog Devices | |
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Rail-to-Rail High Output
Current Operational Amplifiers
FEATURES
Rail-to-Rail Inputs and Outputs
High Output Current: ؎60 mA
Single Supply: 5 V to 12 V
Wide Bandwidth: 5 MHz
High Slew Rate: 3 V/s
Low Distortion: 0.01%
Unity-Gain Stable
No Phase Reversal
Short-Circuit Protected
Drives Capacitive Loads: 10 nF
APPLICATIONS
Multimedia
Telecom
DAA Transformer Driver
LCD Driver
Low Voltage Servo Control
Modems
FET Drivers
GENERAL DESCRIPTION
The OP179 and OP279 are rail-to-rail, high output current,
single-supply amplifiers. They are designed for low voltage
applications that require either current or capacitive load drive
capability. The OP179/OP279 can sink and source currents of
± 60 mA (typical) and are stable with capacitive loads to 10 nF.
Applications that benefit from the high output current of the
OP179/OP279 include driving headphones, displays, transform-
ers and power transistors. The powerful output is combined with a
unique input stage that maintains very low distortion with wide
common-mode range, even in single supply designs.
The OP179/OP279 can be used as a buffer to provide much
greater drive capability than can usually be provided by CMOS
outputs. CMOS ASICs and DAC often have outputs that can
swing to both the positive supply and ground, but cannot drive
more than a few milliamps.
Bandwidth is typically 5 MHz and the slew rate is 3 V/µs, making
these amplifiers well suited for single supply applications that
require audio bandwidths when used in high gain configurations.
Operation is guaranteed from voltages as low as 4.5 V, up to 12 V.
OP179/OP279
PIN CONFIGURATIONS
5-Lead SOT-23-5
(RT-5)
OP179
OUT A 1
5 V–
V+ 2
+IN A 3
4 ؊IN A
8-Lead SOIC
(S Suffix)
NC 1
؊IN A 2
+IN A 3
V؊ 4
OP179
8 NC
7 V+
6 OUT A
5 NC
NC = NO CONNECT
8-Lead SOIC and TSSOP
SO-8 (S) and RU-8
OUT A 1
؊IN A 2
+IN A 3
V؊ 4
OP279
8 V+
7 OUT B
6 ؊IN B
5 +IN B
Very good audio performance can be attained when using the
OP179/OP279 in 5 volt systems. THD is below 0.01% with a
600 Ω load, and noise is a respectable 21 nV/√Hz. Supply current
is less than 3.5 mA per amplifier.
The single OP179 is available in the 5-lead SOT-23-5 package.
It is specified over the industrial (–40°C to +85°C) tempera-
ture range.
The OP279 is available in 8-lead TSSOP and SO-8 surface
mount packages. They are specified over the industrial (–40°C
to +85°C) temperature range.
REV. G
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 otherwise
under any patent or patent rights of Analog Devices.
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
© Analog Devices, Inc., 2002
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6.5
6.0
VS ؍ ؎6V
5.5
VS ؍ ؎5V
5.0
VS ؍ 5V
4.5 VCM ؍ 2.5V
4.0
–50
–25 0 25 50 75
TEMPERATURE – ؇C
TPC 10. Supply Current vs.
Temperature
100
5
+EDGE
4
–EDGE
3
2
1
VS ؍ ؎5V
RL ؍ 1k⍀
CL ؍ +1nF
0
–50 –25 0 25 50 75
TEMPERATURE – ؇C
100
TPC 11. Slew Rate vs. Temperature
OP179/OP279
120 270
VS ؎2.5V
100
TA –40؇C
225
RL ؍ 2k⍀
80
GAIN
CL ؍ 500pF
180
60 135
40
PHASE
20
90
45
00
–20 –45
–40
100
1k 10k 100k 1M
FREQUENCY – Hz
–90
10M
TPC 12. Open-Loop Gain and
Phase vs. Frequency
120
VS ؎2.5V
100 TA ؍ 25؇C
80 –PSRR
60
+PSRR
40
20
0
10 100 1k 10k 100k 1M 10M
FREQUENCY – Hz
TPC 13. Power Supply Rejection vs.
Frequency
6
TA ؍ 25؇C
5 VS ؍ ؎2.5V
AVCL ؍ +1
RL 1k⍀
4
3
2
1
0
1k 10k 100k 1M 10M
FREQUENCY – Hz
TPC 14. Maximum Output
Swing vs. Frequency
180
160
TA ؍ 25؇C
VS ؍ ؎2.5V OR ؎5V
140
120
AVCL ؍ 10 OR 100
100
80
60
40
20
0
10
AVCL ؍ 1
100 1k 10k 100k 1M 10M
FREQUENCY – Hz
TPC 15. Closed-Loop Output
Impedance vs. Frequency
12
TA ؍ 25؇C
10
VS ؍ ؎5V
AVCL ؍ +1
RL 1k⍀
8
6
4
2
0
1k 10k 100k 1M 10M
FREQUENCY – Hz
TPC 16. Maximum Output Swing vs.
Frequency
50
AVCL ؍ +100
40
30
AVCL ؍ +10
20
VS ؎2.5V
TA ؍ 25؇C
RL 1k⍀
10
AVCL ؍ +1
0
–10
–20
–30
1k
10k 100k 1M 10M 100M
FREQUENCY – Hz
TPC 17. Closed-Loop Gain vs.
Frequency
80
TA ؍ 25؇C
70 AVCL ؍ +1
RL 1k⍀
60 VS ؎2.5V
VIN ؍ 100mV p-p
50
40
30
POSITIVE EDGE AND
20 NEGATIVE EDGE
10
0 0 2k 4k 6k 8k 10k
LOAD CAPACITANCE – pF
TPC 18. Small Signal Overshoot vs.
Load Capacitance
REV. G
–5–
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for OP179 electronic component. |
| Information | Total 16 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ OP179.PDF Datasheet ] | |
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