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PDF ADA4084-4 Data sheet ( Hoja de datos )
| Número de pieza | ADA4084-4 | |
| Descripción | Low Power Operational Amplifiers | |
| Fabricantes | Analog Devices | |
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Data Sheet
30 V, Low Noise, Rail-to-Rail Input/Output,
Low Power Operational Amplifiers
ADA4084-1/ADA4084-2/ADA4084-4
FEATURES
Rail-to-rail input/output
Low power: 0.625 mA typical per amplifier at ±15 V
Gain bandwidth product: 15.9 MHz at AV = 100 typical
Unity-gain crossover: 9.9 MHz typical
−3 dB closed-loop bandwidth: 13.9 MHz typical at ±15 V
Low offset voltage: 100 μV maximum (SOIC)
Unity-gain stable
High slew rate: 4.6 V/μs typical
Low noise: 3.9 nV/√Hz typical at 1 kHz
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
(quad) are single-supply, 10 MHz bandwidth amplifiers featuring
rail-to-rail inputs and outputs. They are guaranteed to operate
from +3 V to +30 V (or ±1.5 V to ±15 V).
These amplifiers are well suited for single-supply applications
requiring both ac and precision dc performance. The combination
of wide bandwidth, low noise, and precision makes the
ADA4084-1, ADA4084-2, and ADA4084-4 useful in a wide
variety of applications, including filters and instrumentation.
Other applications for these amplifiers include portable telecom-
munications equipment, power supply control and protection, and
use as amplifiers or buffers 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 to build multistage filters in single-supply
systems and to maintain high signal-to-noise ratios.
The ADA4084-1, ADA4084-2, and ADA4084-4 are specified
over the industrial temperature range of −40°C to +125°C.
PIN CONNECTION DIAGRAM
ADA4084-2
OUT A 1
8 V+
–IN A 2
7 OUT B
+IN A 3
6 –IN B
V– 4
5 +IN B
NOTES
1. FOR THE LFCSP PACKAGE,
THE EXPOSED PAD MUST BE
CONNECTED TO V–.
Figure 1. ADA4084-2, 8-Lead LFCSP (CP)
See the Pin Configurations and Function Descriptions section
for additional pin configurations and information about the pin
functions.
The single ADA4084-1 is available in the 5-lead SOT-23 and
8-lead SOIC; the dual ADA4084-2 is available in the 8-lead
SOIC, 8-lead MSOP, and 8-lead LFCSP surface-mount
packages; and the ADA4084-4 is offered in the 14-lead TSSOP
and 16-lead LFCSP.
The ADA4084-1, ADA4084-2, and ADA4084-4 are members of
a growing series of high voltage, low noise op amps offered by
Analog Devices, Inc. (see Table 1).
Table 1. Low Noise Op Amps
Single
Dual
Quad
AD8597
AD8599
ADA4004-1 ADA4004-2 ADA4004-4
AD8675
AD8676
AD8671
AD8672
AD8674
OP27, OP37
ADA4084-1 ADA4084-2 ADA4084-4
Voltage Noise
1.1 nV/Hz
1.8 nV/Hz
2.8 nV/Hz rail-to-rail output
2.8 nV/Hz
3.2 nV/Hz
3.9 nV/Hz rail-to-rail
input/output
Rev. H
Document Feedback
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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2011–2015 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
1 page  
Data Sheet
ADA4084-1/ADA4084-2/ADA4084-4
VSY = ±5.0 V, VCM = 0 V, TA = 25°C, unless otherwise noted.
Table 3.
Parameter
INPUT CHARACTERISTICS
Offset Voltage
Offset Voltage Drift
Offset Voltage Matching
Input Bias Current
Input Offset Current
Input Voltage Range
Common-Mode Rejection Ratio
Large Signal Voltage Gain
Input Impedance
Differential
Common Mode
OUTPUT CHARACTERISTICS
Output Voltage High
Output Voltage Low
Short-Circuit Current
Closed-Loop Output Impedance
POWER SUPPLY
Power Supply Rejection Ratio
Supply Current per Amplifier
DYNAMIC PERFORMANCE
Slew Rate
Gain Bandwidth Product
Unity-Gain Crossover
Phase Margin
−3 dB Closed-Loop Bandwidth
Settling Time
Total Harmonic Distortion Plus Noise
NOISE PERFORMANCE
Voltage Noise
Voltage Noise Density
Current Noise Density
Symbol
VOS
ΔVOS/ΔT
IB
IOS
CMRR
AVO
Test Conditions/Comments
SOIC package
−40°C ≤ TA ≤ +125°C
SOT-23, MSOP, TSSOP packages
−40°C ≤ TA ≤ +125°C
ADA4084-2 LFCSP package
−40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C
TA = 25°C
ADA4084-4 LFCSP package
−40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C
VCM = ±4 V, −40°C ≤ TA ≤ +125°C
VCM = ±5 V
VCM = ±5 V, −40°C ≤ TA ≤ +125°C
RL = 2 kΩ, −4 V ≤ VOUT ≤ 4 V
−40°C ≤ TA ≤ +125°C
VOH
VOL
ISC
ZOUT
PSRR
ISY
SR
GBP
UGC
ΦM
−3 dB
tS
THD + N
en p-p
en
in
RL = 10 kΩ to VCM
−40°C ≤ TA ≤ +125°C
RL = 2 kΩ to VCM
−40°C ≤ TA ≤ +125°C
RL = 10 kΩ to VCM
−40°C ≤ TA ≤ +125°C
RL = 2 kΩ to VCM
−40°C ≤ TA ≤ +125°C
f = 1 kHz, AV = 1
VSY = ±2 V to ±18 V
−40°C ≤ TA ≤ +125°C
IOUT = 0 mA
−40°C ≤ TA ≤ +125°C
RL = 2 kΩ to VCM
VIN = 5 mV p-p, RL = 10 kΩ, AV = 100
VIN = 5 mV p-p, RL = 10 kΩ, AV = 1
AV = 1, VIN = 5 mV p-p
AV = 10, VIN = 8 V p-p, 0.1%
VIN = 2 V rms, RL = 2 kΩ, f = 1 kHz
0.1 Hz to 10 Hz
f = 1 kHz
f = 1 kHz
Min Typ
Max Unit
30
60
90
0.5
140
5
−5
106 124
76
70
108 112
103
100 µV
200 µV
130 µV
250 µV
200 µV
300 µV
1.75 µV/°C
150 µV
200 µV
250 nA
400 nA
25 nA
50 nA
+5 V
dB
dB
dB
dB
dB
100||1.1
200||2.5
kΩ||pF
MΩ||pF
4.9 4.95
V
4.8 V
4.8 4.85
V
4.7 V
−4.95
−4.9 V
−4.8 V
−4.95
−4.8 V
−4.7 V
−24/+17
mA
0.1 Ω
110 120
105
0.595
0.700
1.00
dB
dB
mA
mA
2.4 3.7
15.9
9.6
85
13.9
4
0.003
V/µs
MHz
MHz
Degrees
MHz
µs
%
0.14 µV p-p
3.9 nV/√Hz
0.55 pA/√Hz
Rev. H | Page 5 of 35
5 Page 
Data Sheet
ADA4084-1/ADA4084-2/ADA4084-4
TYPICAL PERFORMANCE CHARACTERISTICS
TA = 25°C, unless otherwise noted.
±1.5 V CHARACTERISTICS
120
VSY = ±1.5V
TA = 25°C
100 RL = ∞
80
60
40
20
200
VSY = ±1.5V
TA = 25°C
RL = ∞
150
100
50
0
–100 –75 –50 –25
0
25 50 75 100
VOS (µV)
Figure 10. Input Offset Voltage (VOS) Distribution, SOIC
0
–200
–150
–100
–50
0
50 100
VOS (µV)
Figure 13. Input Offset Voltage (VOS) Distribution, LFCSP
100
VSY = ±1.5V
90
TA = 25°C
RL = ∞
80
70
60
50
40
30
20
10
0
–100 –75 –50 –25
0
25 50 75 100
VOS (µV)
Figure 11. Input Offset Voltage (VOS) Distribution, SOT-23
60
50
40
30
20
10 VSY = ±1.5V
RL = ∞
–40°C ≤ TA ≤ +125°C
0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
TCVOS (µV/°C)
Figure 14. TCVOS Distribution, SOIC, MSOP, and TSSOP
50
VSY = ±1.5V
45 TA = 25°C
RL = ∞
40
35
30
25
20
15
10
5
0
–100 –75 –50 –25
0
25 50 75 100
VOS (µV)
Figure 12. Input Offset Voltage (VOS) Distribution, MSOP and TSSOP
20
VSY = ±1.5V
18 RL = ∞
–40°C ≤ TA ≤ +125°C
16
14
12
10
8
6
4
2
0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
TCVOS (µV/°C)
Figure 15. TCVOS Distribution, SOT-23
Rev. H | Page 11 of 35
11 Page | ||
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| PDF Descargar | [ Datasheet ADA4084-4.PDF ] | |
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