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a
Precision Rail-to-Rail Input & Output
Operational Amplifiers
OP184/OP284/OP484
FEATURES
Single-Supply Operation
Wide Bandwidth: 4 MHz
Low Offset Voltage: 65 mV
Unity-Gain Stable
High Slew Rate: 4.0 V/ms
Low Noise: 3.9 nV/√
Hz
APPLICATIONS
Battery Powered Instrumentation
Power Supply Control and Protection
Telecom
DAC Output Amplifier
ADC Input Buffer
GENERAL DESCRIPTION
The OP184/OP284/OP484 are single, dual and quad single-
supply, 4 MHz bandwidth amplifiers featuring rail-to-rail inputs
and outputs. They are guaranteed to operate from +3 to +36 (or
±1.5 to ±18) volts and will function with a single supply as low
as +1.5 volts.
These amplifiers are superb for single supply applications re-
quiring both ac and precision dc performance. The combination
of bandwidth, low noise and precision makes the OP184/OP284/
OP484 useful in a wide variety of applications, including filters
and instrumentation.
Other applications for these amplifiers include portable telecom
equipment, power supply control and protection, and as amplifi-
ers or buffers for transducers with wide output ranges. Sensors
requiring a rail-to-rail input amplifier include Hall effect, piezo
electric, and resistive transducers.
The ability to swing rail-to-rail at both the input and output en-
ables designers to build multistage filters in single-supply sys-
tems and to maintain high signal-to-noise ratios.
The OP184/OP284/OP484 are specified over the HOT extended
industrial (–40°C to +125°C) temperature range. The single
and dual are available in 8-pin plastic DIP plus SO surface
mount packages. The quad OP484 is available in 14-pin plastic
DIPs and 14-lead narrow-body SO packages.
PIN CONFIGURATIONS
8-Lead Epoxy DIP
(P Suffix)
8-Lead SO
(S Suffix)
1
2
3
4
8
7
6
5
OUT A
V+
NULL
NC
NULL
–IN A
+IN A
V–
OP184
NC = NO CONNECT
8-Lead Epoxy DIP
(P Suffix)
8-Lead SO
(S Suffix)
1
2
3
4
8
7
6
5
OP284
OUT B
–IN B
+IN B
V+
OUT A
–IN A
+IN A
V–
14-Lead Epoxy DIP
(P Suffix)
14-Lead Narrow-Body SO
(S Suffix)
14
13
12
11
10
9
8
1
2
3
4
5
6
7
OP484
OUT A
–IN A
+IN A
V+
+IN B
–IN B
OUT B
OUT D
–IN D
+IN D
V–
+IN C
–IN C
OUT C
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700 World Wide Web Site: http://www.analog.com
Fax: 617/326-8703 © Analog Devices, Inc., 1996
