ADA4091-2_16 Datasheet, PDF (1/20 Pages) Analog Devices – Precision Micropower, OVP, RRIO Operational Amplifier

Data Sheet
Precision Micropower, OVP, RRIO
Operational Amplifier
ADA4091-2/ADA4091-4
FEATURES
Single-supply operation: 3.0 V to 30 V
Wide input voltage range
Rail-to-rail output swing
Low supply current: 200 μA/amplifier
Wide bandwidth: 1.2 MHz
Slew rate: 0.46 V/μs
Low offset voltage: 250 μV maximum
No phase reversal
Overvoltage protection (OVP)
25 V above/below supply rails at ±5 V
12 V above/below supply rails at ±15 V
APPLICATIONS
Industrial process control
Battery-powered instrumentation
Power supply control and protection
Telecommunications
Remote sensors
Low voltage strain gage amplifiers
DAC output amplifiers
GENERAL DESCRIPTION
The ADA4091-2 dual and ADA4091-4 quad are micropower,
single-supply, 1.2 MHz bandwidth amplifiers featuring rail-to-
rail inputs and outputs. They are guaranteed to operate from a
+3.0 V to +30 V single supply as well as from ±1.5 V to ±15 V
dual supplies.
The ADA4091-2/ADA4091-4 features a unique input stage that
allows the input voltage to exceed either supply safely without any
phase reversal or latch-up; this is called overvoltage protection
(OVP).
Applications for these amplifiers include portable telecom-
munications equipment, power supply control and protection,
and interface 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 enables
designers, for example, to build multistage filters in single-supply
systems and to maintain high signal-to-noise ratios (SNR).
The ADA4091-2/ADA4091-4 is specified over the extended indus-
trial temperature range of −40°C to +125°C. The ADA4091-2/
ADA4091-4 is part of the growing selection of 36 V, low power
operational amplifiers from Analog Devices, Inc., (see Table 1).
PIN CONFIGURATIONS
OUTA 1
8 +V
–INA 2 _ADA4091-2 7 OUTB
+INA 3 TOP VIEW 6 –INB
–V 4 ^{(Not to Scale)} 5 +INB
Figure 1. 8-Lead, Narrow-Body SOIC (R-8)
OUTA 1
–INA 2
+INA 3
–V 4
ADA4091-2
TOP VIEW
(Not to Scale)
8 +V
7 OUTB
6 –INB
5 +INB
NOTES
1. IT IS RECOMMENDED TO CONNECT THE
EXPOSED PAD TO V–.
Figure 2. 8-Lead LFCSP (CP-8-21)
OUTA 1
14 OUTD
–INA 2
13 –IND
+INA 3 _ADA4091-4 12 +IND
+V 4 TOP VIEW 11 –V
(Not to Scale)
+INB 5
10 +INC
–INB 6
9 –INC
OUTB 7
8 OUTC
Figure 3. 14-Lead TSSOP (RU-14)
–INA 1
+INA 2
V+ 3
+INB 4
ADA4091-4
TOP
VIEW
12 –IND
11 +IND
10 V–
9 +INC
NOTES
1. NC = NO CONNECT.
2. IT IS RECOMMENDED TO CONNECT THE
EXPOSED PAD TO V–.
Figure 4. 16-Lead LFCSP (CP-16-17)
The ADA4091-2 is available in 8-lead, plastic SOIC and 8-lead
LFCSP packages. The ADA4091-4 is available in 14–lead TSSOP
and 16-lead LFCSP surface-mount packages.
Table 1. Low Power, 36 V Operational Amplifiers
Family Rail-to-Rail I/O PJFET
Low Noise
Single
OP1177
Dual
ADA4091-2
AD8682
OP2177
Quad
ADA4091-4
AD8684
OP4177
Rev. H
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