Precision Rail-to-Rail
Input and Output Operational Amplifiers
OP184/OP284/OP484
Rev. J
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FEATURES
Single-supply operation
Wide bandwidth: 4 MHz
Low offset voltage: 65 μV
Unity-gain stable
High slew rate: 4.0 V/ μs
Low noise: 3.9 nV/√Hz
APPLICATIONS
Battery-powered instrumentation
Power supply control and protection
Telecommunications
DAC output amplifier
ADC input buffer
GENERAL DESCRIPTION
4 MHz bandwidth amplifiers featuring rail-to-rail inputs and
outputs. They are guaranteed to operate from 3 V to 36 V (or
±1.5 V to ±18 V).
These amplifiers are superb for single-supply applications requiring
both ac and precision dc performance. The combination of wide
OP484 useful in a wide variety of applications, including filters
and instrumentation.
Other applications for these amplifiers include portable telecom-
munications equipment, power supply control and protection,
and use as amplifiers or buffers for transducers with wide output
ranges. Sensors requiring a rail-to-rail input amplifier include
Hall effect, piezoelectric, and resistive transducers.
The ability to swing rail-to-rail at both the input and output
enables designers to build multistage filters in single-supply
systems and to maintain high signal-to-noise ratios.
industrial temperature range of 40°C to +125°C. The single
OP184 is available in 8-lead SOIC surface mount packages. The
dual OP284 is available in 8-lead PDIP and SOIC surface mount
packages. The quad OP484 is available in 14-lead PDIP and
14-lead, narrow-body SOIC packages.
PIN CONFIGURATIONS
1
2
3
4
OUT A
V+
DNC
NC
DNC
–IN A
+IN A
V–
8
7
6
5
NOTES
1. NC = NO CONNECT
2. DNC = DO NOT CONNECT
–
+
00293-
001
TOP VIEW
(Not to Scale)
OP184
Figure 1. 8-Lead SOIC (S-Suffix)
00293-
002
1
2
3
4
8
7
6
5
OUT B
–IN B
+IN B
V+
OUT A
–IN A
+IN A
V–
OP284
TOP VIEW
(Not to Scale)
Figure 2. 8-Lead PDIP (P-Suffix)
8-Lead SOIC (S-Suffix)
14
13
12
11
10
9
8
1
2
3
4
5
6
7
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
OP484
TOP VIEW
(Not to Scale)
00293-
003
Figure 3. 14-Lead PDIP (P-Suffix)
14-Lead Narrow-Body SOIC (S-Suffix)
Table 1. Low Noise Op Amps
Voltage Noise
0.9 nV
1.1 nV
1.8 nV
2.8 nV
3.2 nV
3.8 nV
3.9 nV
Single
Dual
Quad