ada4091-2arz-r2 Analog Devices, Inc., ada4091-2arz-r2 Datasheet

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ada4091-2arz-r2

Manufacturer Part Number
ada4091-2arz-r2
Description
Micropower, Single-supply, Rail-to-rail Input/output Operational Amplifier
Manufacturer
Analog Devices, Inc.
Datasheet
FEATURES
Single-supply operation: 3 V to 36 V
Wide input voltage range
Rail-to-rail output swing
Low supply current: 250 μA/amp
Wide bandwidth: 1.2 MHz
Slew rate: 0.46 V/μs
Low offset voltage: 500 μV maximum
No phase reversal
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 is a dual, micropower, single-supply, 1.2 MHz
bandwidth amplifier featuring rail-to-rail inputs and outputs.
It is guaranteed to operate from a +3 V single supply as well as
from ±15 V dual supplies.
The ADA4091 family of op amps features a unique input stage
that allows the input voltage to safely exceed either supply
without any phase inversion or latch-up. The output voltage
swings to within 10 mV of the supplies.
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.
Rev. 0
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.
Micropower, Single-Supply, Rail-to-Rail
Input/Output Operational Amplifier
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
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.
The ADA4091 family of op amps is specified over the extended
industrial temperature range of −40°C to +125°C. The ADA4091-2
is part of a growing family of 36 V, low power op amps from
Analog Devices, Inc. (see Table 1).
The ADA4091-2 is available in an 8-lead plastic SOIC surface-
mount package.
Table 1. Low Power, 36 V Operational Amplifiers
Family
Single
Dual
Quad
Rail-to-Rail I/O
ADA4091-2
Figure 1. 8-Lead, Narrow Body SOIC
OUTA
PIN CONFIGURATION
–INA
+INA
–V
©2008 Analog Devices, Inc. All rights reserved.
1
2
3
4
ADA4091-2
(Not to Scale)
TOP VIEW
PJFET
AD8682
AD8684
8
7
6
5
ADA4091-2
+V
OUTB
–INB
+INB
www.analog.com
Low Noise
OP1177
OP2177
OP4177

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ada4091-2arz-r2 Summary of contents

Page 1

... 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. The ADA4091 family of op amps is specified over the extended industrial temperature range of −40°C to +125°C. The ADA4091-2 is part of a growing family low power op amps from Analog Devices, Inc ...

Page 2

... ADA4091-2 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Pin Configuration ............................................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Electrical Specifications ............................................................... 3 Absolute Maximum Ratings ............................................................ 6 REVISION HISTORY 10/08—Revision 0: Initial Version   Thermal Resistance .......................................................................6   ESD Caution...................................................................................6   Typical Performance Characteristics ..............................................7   Theory of Operation ...................................................................... 13   Input Overvoltage Protection ................................................... 14   Outline Dimensions ....................................................................... 15   ...

Page 3

... T ≤ +125° 100 kΩ 0.01% S GBP Φ p-p 0 kHz n Rev Page ADA4091-2 Min Typ Max Unit −500 +45 +500 μV −1.0 +1.0 mV −50 +50 nA −55 +55 nA −275 +275 nA − − ...

Page 4

... ADA4091 ±5.0 V, −4.9 V ≤ V ≤ +4 Table 3. Parameter INPUT CHARACTERISTICS Offset Voltage Input Bias Current Input Offset Current Input Voltage Range Common-Mode Rejection Ratio Large Signal Voltage Gain OUTPUT CHARACTERISTICS Output Voltage High Output Voltage Low Short-Circuit Limit Open-Loop Impedance ...

Page 5

... T ≤ +125° 100 kΩ GBP Φ kHz e p-p 0 kHz n Rev Page ADA4091-2 Min Typ Max Unit −500 +500 μV −1.2 +1.20 mV −55 +55 nA −80 +80 nA −510 +510 nA − − ...

Page 6

... ADA4091-2 ABSOLUTE MAXIMUM RATINGS Table 5. Parameter Rating Supply Voltage 36 V Input Voltage Refer to the Input Overvoltage Protection section 1 Differential Input Voltage ±V Output Short-Circuit Duration to GND Indefinite Storage Temperature Range –65°C to +150°C Operating Temperature Range –40°C to +125°C Junction Temperature Range – ...

Page 7

... Figure 6. Open-Loop Gain and Phase vs. Frequency 100 ADA4091-2 – ±1. 1MΩ 35pF L –20 10 100 1k 10k 100k FREQUENCY (Hz) Figure 7. Closed-Loop Gain vs. Frequency ADA4091-2 ADA4091 ±1. 100 100 –20 10M 1M 10M ...

Page 8

... Figure 11. Output Swing vs. Frequency 225 200 175 150 125 100 –250 –200 –150 –100 – 100 V (µV) OS Figure 12. Input Offset Voltage Distribution 400 ADA4091-2 –40°C ≤ T 350 V = ±5V SY 300 250 200 150 100 50 0 – TCV (µ ...

Page 9

... ADA4091 100 Rev Page ADA4091-2 PHASE GAIN 10k 100k 1M FREQUENCY (Hz 100 ADA4091 25° 100 1k 10k 100k 1M FREQUENCY (Hz) Figure 18. Output Impedance vs. Frequency = ±5V = 9.8V p-p = 100kΩ ...

Page 10

... AND +125° ±15V 300 SY 250 200 150 100 50 0 – TCV (µV/°C) OS Figure 23. Offset Voltage TC 700 ADA4091 ±15V 600 SY 500 400 +125°C 300 200 +85°C 100 +25°C 0 –100 –40°C –200 –300 –15 –10 – ...

Page 11

... –10 ADA4091-2 V – – Rev Page ADA4091-2 V – – ADA4091 0.01 0 LOAD CURRENT (mA) Figure 29. Dropout Voltage vs. Load Current A = 100 ADA4091 25° 100 1k 10k 100k 1M FREQUENCY (Hz) Figure 30 ...

Page 12

... ADA4091-2 1M 10M Rev Page ±1.5V, ±5V, ±15V SY PSRR– PSRR+ 100 1k 10k 100k 1M FREQUENCY (Hz) Figure 35. PSRR vs. Frequency ADA4091 25° (V) SY Figure 36. Supply Current vs. Supply Voltage ADA4091-2 10M 35 ...

Page 13

... Evaluate each circuit carefully to make sure that the increase in current does not affect performance. The output stage in the ADA4091-2 device uses a PNP and an NPN transistor most output stages. However, Q32 and Q33, the output transistors, are actually connected with their collectors to the output pin to achieve the rail-to-rail output swing ...

Page 14

... VOLTAGE (V) Figure 38. DIAC Transfer Characteristic For a worst-case design analysis, consider two cases. The ADA4091-2 has the normal ESD structure from the internal op amp inputs to the supply rails. In addition, it has 42 V DIACs from the external inputs to the rails as shown in Figure 37. Therefore, two conditions have to be considered to determine which one is the limiting factor. • ...

Page 15

... OUTLINE DIMENSIONS 0.25 (0.0098) 0.10 (0.0040) COPLANARITY ORDERING GUIDE Model Temperature Range ADA4091-2ARZ-R2 1 −40°C to +125°C 1 ADA4091-2ARZ-R7 −40°C to +125°C 1 ADA4091-2ARZ-RL −40°C to +125° RoHS Compliant Part. 5.00 (0.1968) 4.80 (0.1890 6.20 (0.2441) 4.00 (0.1574) 1 5.80 (0.2284) 3.80 (0.1497) 4 1.27 (0.0500) BSC 1.75 (0.0688) 1.35 (0.0532) 8° ...

Page 16

... ADA4091-2 NOTES ©2008 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D07671-0-10/08(0) Rev Page ...

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