30 V, Low Noise, Rail-to-Rail Input/Output,
Low Power Operational Amplifiers
Data Sheet
ADA4084-1/ADA4084-2/ADA4084-4
FEATURES PIN CONNECTION DIAGRAM
ADA4084-2
Rail-to-rail input/output
OUT A 1 8 V+
Low power: 0.625 mA typical per amplifier at 15 V
7 OUT B
IN A 2
Gain bandwidth product: 15.9 MHz at A = 100 typical
V
6 IN B
+IN A 3
Unity-gain crossover: 9.9 MHz typical
V 4 5 +IN B
3 dB closed-loop bandwidth: 13.9 MHz typical at 15 V
Low offset voltage: 100 V maximum (SOIC)
NOTES
1. FOR THE LFCSP PACKAGE,
Unity-gain stable
THE EXPOSED PAD MUST BE
CONNECTED TO V.
High slew rate: 4.6 V/s typical
Figure 1. ADA4084-2, 8-Lead LFCSP (CP); for Additional Packages and
Low noise: 3.9 nV/Hz typical at 1 kHz
Models, See the Pin Configurations and Function Descriptions Section
Long-term offset voltage drift (10,000 hours): 3 V typical
Temperature hysteresis: 4 V typical
APPLICATIONS
Battery-powered instrumentation
High-side and low-side sensing
Power supply control and protection
Telecommunications
Digital-to-analog converter (DAC) output amplifiers
Analog-to-digital converter (ADC) input buffers
GENERAL DESCRIPTION
The ADA4084-1 (single), ADA4084-2 (dual), and ADA4084-4 The single ADA4084-1 is available in the 5-lead SOT-23 and
(quad) are single-supply, 10 MHz bandwidth amplifiers featuring 8-lead SOIC; the dual ADA4084-2 is available in the 8-lead
rail-to-rail inputs and outputs. They are guaranteed to operate SOIC, 8-lead MSOP, and 8-lead LFCSP surface-mount
from +3 V to +30 V (or 1.5 V to 15 V). packages; and the ADA4084-4 is offered in the 14-lead TSSOP
and 16-lead LFCSP.
These amplifiers are well suited for single-supply applications
requiring both ac and precision dc performance. The combination The ADA4084-1/ADA4084-2/ADA4084-4 are members of a
of wide bandwidth, low noise, and precision makes the growing series of high voltage, low noise op amps offered by
ADA4084-1/ADA4084-2/ADA4084-4 useful in a wide variety of Analog Devices, Inc. (see Table 1).
applications, including filters and instrumentation.
Table 1. Low Noise Op Amps
Other applications for these amplifiers include portable telecom-
Single Dual Quad Voltage Noise
munications equipment, power supply control and protection, and
AD8597 AD8599 1.1 nV/Hz
use as amplifiers or buffers for transducers with wide output
ADA4004-1 ADA4004-2 ADA4004-4 1.8 nV/Hz
ranges. Sensors requiring a rail-to-rail input amplifier include
AD8675 AD8676 2.8 nV/Hz rail-to-rail output
Hall effect, piezoelectric, and resistive transducers.
AD8671 AD8672 AD8674 2.8 nV/Hz
OP27, OP37 3.2 nV/Hz
The ability to swing rail to rail at both the input and output
ADA4084-1 ADA4084-2 ADA4084-4 3.9 nV/Hz rail-to-rail
enables designers to build multistage filters in single-supply
input/output
systems and to maintain high signal-to-noise ratios.
The ADA4084-1/ADA4084-2/ADA4084-4 are specified over
the industrial temperature range of 40C to +125C.
Rev. I Document Feedback
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08237-001ADA4084-1/ADA4084-2/ADA4084-4 Data Sheet
TABLE OF CONTENTS
Features .............................................................................................. 1 5 V Characteristics ................................................................... 17
Applications ....................................................................................... 1 15 V Characteristics ................................................................ 23
Pin Connection Diagram ................................................................ 1 Applications Information .............................................................. 29
General Description ......................................................................... 1 Functional Description .............................................................. 29
Revision History ............................................................................... 2 Start-Up Characteristics ............................................................ 30
Specifications ..................................................................................... 4 Input Protection ......................................................................... 30
Electrical Characteristics ............................................................. 4 Output Phase Reversal ............................................................... 30
Absolute Maximum Ratings ............................................................ 7 Designing Low Noise Circuits in Single-Supply Applications .. 31
Thermal Resistance ...................................................................... 7 Comparator Operation .............................................................. 31
ESD Caution .................................................................................. 7 Long-Term Drift ......................................................................... 32
Pin Configurations and Function Descriptions ........................... 8 Temperature Hysteresis ............................................................. 32
Typical Performance Characteristics ........................................... 11 Outline Dimensions ....................................................................... 33
1.5 V Characteristics ................................................................ 11 Ordering Guide .......................................................................... 36
REVISION HISTORY
5/2017Rev. H to Rev. I 6/2015Rev. F to Rev. G
Changed CP-8-12 to CP-8-11 ...................................... Throughout Changes to Figure 96 and Figure 97............................................. 24
Changed CP-16-26 to CP-16-17 .................................. Throughout
Changes to Features Section............................................................ 1 1/2015Rev. E to Rev. F
Moved Revision History ................................................................... 3
Added Long-Term Drift Section, Temperature Hysteresis
Section, Figure 112, Figure 113, and Figure 114; Renumbered Changes to Table 5 ............................................................................. 7
Sequentially ..................................................................................... 32 Changes to Ordering Guide .......................................................... 29
Updated Outline Dimensions ....................................................... 34
Changes to Ordering Guide .......................................................... 36 7/2014Rev. D to Rev. E
Added ADA4084-1 ............................................................. Universal
8/2015Rev. G to Rev. H Added Figure 1; Renumbered Sequentially ................................... 1
Added 5-Lead SOT-23 ....................................................... Universal Changes to Output Voltage High Parameter, Table 2 ................... 3
Changes to Current Noise Density Parameter, Table 3 ................ 4
Changes to Pin Connection Diagram Section, Figure 1, and
General Description Section ........................................................... 1 Changes to Current Noise Density Parameter, Table 4 ................ 5
Deleted Figure 3; Renumbered Sequentially ................................. 1 Changes to Figure 8 Caption, and Figure 9 to Figure 11 ............. 7
Changes to Large Signal Voltage Gain Parameter, Table 2 .......... 4 Changes to Figure 13 ......................................................................... 8
Changes to Large Signal Voltage Gain Parameter, Table 3 .......... 5 Changes to Figure 21 ......................................................................... 9
Changes to Large Signal Voltage Gain Parameter, Table 4 .......... 6 Added Figure 31; Renumbered Sequentially .............................. 11
Changes to Table 6 ............................................................................ 7 Changes to Figure 30 Caption, and Figure 32 to Figure 34 ...... 11
Moved Figure 3 ................................................................................. 8
Changes to Figure 36 Caption to Figure 39 Caption ................. 12
Added Pin Configurations and Function Descriptions Section, Changes to Figure 50 ...................................................................... 14
Figure 4, Figure 5, Table 7, Table 8, and Table 9; Renumbered Added Figure 60 ............................................................................. 16
Sequentially ....................................................................................... 8 Changes to Figure 59 Caption, Figure 62, and Figure 63 .......... 16
Added Figure 6, Figure 7, Figure 8, Table 10, and Table 11 ........ 9 Changes to Figure 65 Caption to Figure 68 Caption ................. 17
Moved Figure 9 ............................................................................... 10 Changes to Figure 79 ...................................................................... 19
Added Table 12 ............................................................................... 10 Added Figure 89 ............................................................................. 21
Added Figure 11 and Figure 15..................................................... 11 Changes to Figure 88 Caption, Figure 91 Caption, and
Added Figure 42 and Figure 46..................................................... 17
Figure 92 Caption ........................................................................... 21
Added Figure 73 and Figure 77..................................................... 23 Changes to Ordering Guide .......................................................... 28
Updated Outline Dimensions ....................................................... 32
Changes to Ordering Guide .......................................................... 35
Rev. I | Page 2 of 36