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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
PIN CONFIGURATIONS
OUTA 1 –INA 2 +INA 3 –V 4
8
+V OUTB
07671-001
ADA4091-2
TOP VIEW (Not to Scale)
7 6 5
–INB +INB
Figure 1. 8-Lead, Narrow-Body SOIC (R-8)
OUTA 1 –INA 2 +INA 3 –V 4 8 +V
ADA4091-2
TOP VIEW (Not to Scale)
7 OUTB 6 –INB 5 +INB
NOTES 1. IT IS RECOMMENDED TO CONNECT THE EXPOSED PAD TO V–.
APPLICATIONS
Industrial process control Battery-powered instrumentation Power supply control and protection Telecommunications Remote sensors Low voltage strain gage amplifiers DAC output amplifiers
Figure 2. 8-Lead LFCSP (CP-8-9)
OUTA 1 –INA +INA
2 3 14 13
OUTD –IND +IND –V +INC –INC OUTC
07671-101
ADA4091-4
TOP VIEW (Not to Scale)
12 11 10 9 8
+V 4 +INB 5 –INB OUTB
6 7
14 OUTD
15 OUTA
GENERAL DESCRIPTION
The ADA4091-2 dual and ADA4091-4 quad are micropower, single-supply, 1.2 MHz bandwidth amplifiers featuring rail-torail 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 telecommunications 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, piezoelectric, 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).
Rev. E
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. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners.
Figure 3. 14-Lead TSSOP (RU-14)
16 NC 13 NC
–INA 1 +INA 2 V+ 3 +INB 4
OUTC 7 OUTB 6 –INC 8 –INB 5
12 –IND
ADA4091-4
TOP VIEW
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 Single Dual Quad Rail-to-Rail I/O ADA4091-2 ADA4091-4 PJFET AD8682 AD8684 Low Noise OP1177 OP2177 OP4177
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. www.analog.com Tel: 781.329.4700 Fax: 781.461.3113 ©2008–2010 Analog Devices, Inc. All rights reserved.
07671-103
07571-102
ADA4091-2/ADA4091-4 TABLE OF CONTENTS
Features .............................................................................................. 1 Applications ....................................................................................... 1 General Description ......................................................................... 1 Pin Configurations ........................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Electrical Specifications ............................................................... 3 Absolute Maximum Ratings ............................................................ 6 Thermal Resistance ...................................................................... 6 ESD Caution...................................................................................6 Typical Performance Characteristics ..............................................7 Theory of Operation ...................................................................... 14 Input Stage ................................................................................... 14 Output Stage................................................................................ 14 Input Overvoltag.