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PDF ADA4091-2 Data sheet ( Hoja de datos )
| Número de pieza | ADA4091-2 | |
| Descripción | (ADA4091-2 / ADA4091-4) Operational Amplifier | |
| Fabricantes | Analog Devices | |
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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.
1 page  
VSY = ±15.0 V, VCM = 0.0 V, VO = 0.0 V, TA = 25°C, unless otherwise noted.
Table 4.
Parameter
INPUT CHARACTERISTICS
Offset Voltage
Offset Voltage Drift
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
POWER SUPPLY
Power Supply Rejection Ratio
Supply Current per Amplifier
DYNAMIC PERFORMANCE
Slew Rate
Settling Time
Gain Bandwidth Product
Phase Margin
Channel Separation
NOISE PERFORMANCE
Voltage Noise
Voltage Noise Density
Symbol
VOS
∆VOS/∆T
IB
IOS
CMRR
AVO
VOH
VOL
ISC
ZOUT
PSRR
ISY
SR
tS
GBP
ΦM
CS
en p-p
en
Test Conditions/Comments
ADA4091-4 LFCSP package
−40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +85°C
−40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +85°C
−40°C ≤ TA ≤ +125°C
VCM = −14.85 V to +14.85 V
−40°C ≤ TA ≤ +125°C
RL = 100 kΩ, VO = ±14.7 V
−40°C ≤ TA ≤ +125°C
RL = 10 kΩ, VO = ±14.7 V
−40°C ≤ TA ≤ +125°C
RL = 100 kΩ to GND
−40°C ≤ TA ≤ +125°C
RL = 10 kΩ to GND
−40°C ≤ TA ≤ +125°C
RL = 100 kΩ to GND
−40°C ≤ TA ≤ +125°C
RL = 10 kΩ to GND
−40°C ≤ TA ≤ +125°C
Source/sink
f = 1 MHz, AV = 1
VSY = 2.7 V to 36 V
−40°C ≤ TA ≤ +125°C
IO = 0 mA
−40°C ≤ TA ≤ +125°C
RL = 100 kΩ, CL = 30 pF
To 0.01%
f = 1 kHz
0.1 Hz to 10 Hz
f = 1 kHz
ADA4091-2/ADA4091-4
Min Typ Max Unit
−250
−400
−600
−60
−80
−510
−3
−10
−140
−15
104
95
116
108
102
93
−35
−40
3.0
−50
0.5
121
119
104
+250
+400
+600
+80
+510
+3
+10
+140
+15
µV
µV
µV
µV/°C
nA
nA
nA
nA
nA
nA
V
dB
dB
dB
dB
dB
dB
14.975
14.950
14.900
14.800
14.980
14.920
−14.996
−14.975
±20
71
−14.990
−14.985
−14.950
−14.940
V
V
V
V
V
V
V
V
mA
Ω
108 126
dB
100 dB
200 250 µA
350 µA
0.46 V/µs
22 µs
1.27 MHz
72 Degrees
100 dB
0.8 µV p-p
25 nV/√Hz
Rev. E | Page 5 of 20
5 Page 
250
ADA4091-2
TA = 25°C
VSY = ±15V
200
150
100
50
0
–250 –200 –150 –100 –50 0 50 100 150 200 250
VOS (µV)
Figure 29. Input Offset Voltage Distribution
350
ADA4091-2
–40°C ≤ TA ≤ +125°C
300 VSY = ±15V
250
200
150
100
50
0
–1 0 1 2 3 4 5 6 7 8
TCVOS (µV/°C)
Figure 30. TCVOS Distribution
700
ADA4091-2
600 VSY = ±15V
500
400
+125°C
300
200
100 +85°C
0
+25°C
–100
–200
–40°C
–300
–15
–10
–5
0
5 10 15
VCM (V)
Figure 31. Input Bias Current vs. Common-Mode Voltage
ADA4091-2/ADA4091-4
100 100
PHASE
80 80
60
GAIN
40
60
40
20 20
0 ADA4091-2
VSY = ±15V
RL = 1MΩ
CL = 35pF
0
–20 –20
1k 10k 100k 1M 10M
FREQUENCY (Hz)
Figure 32. Open-Loop Gain and Phase vs. Frequency
20
15
10
5
0 ADA4091-2
VSY = ±15V
TA = 25°C
–5 RL = 100kΩ
CL = 100pF
AV = +1
–10
–15
–20
–25
0 25 50 75 100 125 150 175
TIME (µs)
Figure 33. Large Signal Transient Response
200
0.06
0.04
0.02
0
–0.02
–0.04
ADA4091-2
VSY = ±15V
TA = 25°C
RL = 100kΩ
CL = 100pF
AV = +1
–0.06
–0.08
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
TIME (µs)
Figure 34. Small Signal Transient Response
Rev. E | Page 11 of 20
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet ADA4091-2.PDF ] | |
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