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Analog Devices - (ADA4091-2 / ADA4091-4) Operational Amplifier

Numéro de référence ADA4091-2
Description (ADA4091-2 / ADA4091-4) Operational Amplifier
Fabricant Analog Devices 
Logo Analog Devices 





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ADA4091-2 fiche technique
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Precision Micropower, OVP, RRIO
Operational Amplifier
ADA4091-2/ADA4091-4
FEATURES
Single-supply operation: 2.7 V to 36 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
+2.7 V to +30 V single supply as well as from ±1.35 V to ±15 V
dual supplies.
The ADA4091 family 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, or 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 family is specified over the extended industrial
temperature range of −40°C to +125°C. The ADA4091 family is
part of the growing selection of 36 V, low power op amps 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-8-9)
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. E
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113 ©2008–2010 Analog Devices, Inc. All rights reserved.

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