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PDF OP191 Data sheet ( Hoja de datos )
| Número de pieza | OP191 | |
| Descripción | Micropower Single-Supply Rail-to-Rail Input/Output Op Amps | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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FEATURES
Single-supply operation: 2.7 V to 12 V
Wide input voltage range
Rail-to-rail output swing
Low supply current: 300 μA/amp
Wide bandwidth: 3 MHz
Slew rate: 0.5 V/μs
Low offset voltage: 700 μV
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
Micropower Single-Supply
Rail-to-Rail Input/Output Op Amps
OP191/OP291/OP491
PIN CONFIGURATIONS
NC 1
–INA 2
+INA 3
–V 4
OP191
8 NC
7 +V
6 OUTA
5 NC
NC = NO CONNECT
Figure 1. 8-Lead Narrow-Body SOIC
OUTA 1
–INA 2
+INA 3
–V 4
OP291
8 +V
7 OUTB
6 –INB
5 +INB
Figure 2. 8-Lead Narrow-Body SOIC
OUTA 1
–INA 2
+INA 3
+V 4
+INB 5
–INB 6
OUTB 7
OP491
14 OUTD
13 –IND
12 +IND
11 –V
10 +INC
9 –INC
8 OUTC
OUTA 1
–INA 2
+INA 3
+V 4
+INB 5
–INB 6
OUTB 7
-+
+-
OP491
-+
14 OUTD
13 –IND
12 +IND
11 –V
10 +INC
9 –INC
8 OUTC
Figure 3. 14-Lead Narrow-Body SOIC
Figure 4. 14-Lead PDIP
OUTA
–INA
+INA
+V
+INB
–INB
OUTB
1
2
3
4
5
6
7
OP491
14 OUTD
13 –IND
12 +IND
11 –V
10 +INC
9 –INC
8 OUTC
Figure 5. 14-Lead TSSOP
GENERAL DESCRIPTION
The OP191, OP291, and OP491 are single, dual, and quad
micropower, single-supply, 3 MHz bandwidth amplifiers
featuring rail-to-rail inputs and outputs. All are guaranteed to
operate from a +3 V single supply as well as ±5 V dual supplies.
Fabricated on Analog Devices CBCMOS process, the OPx91
family has a unique input stage that allows the input voltage to
safely extend 10 V beyond either supply without any phase
inversion or latch-up. The output voltage swings to within
millivolts of the supplies and continues to sink or source
current all the way to the supplies.
Applications for these amplifiers include portable tele-
communications 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. 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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
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 OP191/OP291/OP491 are specified over the extended
industrial –40°C to +125°C temperature range. The OP191
single and OP291 dual amplifiers are available in 8-lead plastic
SOIC surface-mount packages. The OP491 quad is available in a
14-lead PDIP, a narrow 14-lead SOIC package, and a 14-lead
TSSOP.
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 ©1994–2010 Analog Devices, Inc. All rights reserved.
1 page  
@ VO = ±5.0 V, –4.9 V ≤ VCM ≤ +4.9 V, TA = +25°C, unless otherwise noted.
Table 3.
Parameter
INPUT CHARACTERISTICS
Offset Voltage
OP191
OP291/OP491
Input Bias Current
Symbol Conditions
VOS
−40°C ≤ TA ≤ +125°C
VOS
−40°C ≤ TA ≤ +125°C
IB
−40°C ≤ TA ≤ +125°C
Input Offset Current
Input Voltage Range
Common-Mode Rejection Ratio
Large Signal Voltage Gain
Offset Voltage Drift
Bias Current Drift
Offset Current Drift
OUTPUT CHARACTERISTICS
Output Voltage Swing
Short-Circuit Limit
Open-Loop Impedance
POWER SUPPLY
Power Supply Rejection Ratio
Supply Current/Amplifier
DYNAMIC PERFORMANCE
Slew Rate
Full-Power Bandwidth
Settling Time
Gain Bandwidth Product
Phase Margin
Channel Separation
NOISE PERFORMANCE
Voltage Noise
Voltage Noise Density
Current Noise Density
IOS
CMRR
AVO
∆VOS/∆T
∆IB/∆T
∆IOS/∆T
VO
ISC
ZOUT
PSRR
ISY
±SR
BWP
tS
GBP
θO
CS
en p-p
en
in
−40°C ≤ TA ≤ +125°C
VCM = ±5 V
−40°C ≤ TA ≤ +125°C
RL = +10 kΩ, VO = ±4.7 V
−40°C ≤ TA ≤ +125°C
RL = 100 kΩ to GND
−40°C to +125°C
RL = 2 kΩ to GND
–40°C ≤ TA ≤ +125°C
Sink/source
−40°C to +125°C
f = 1 MHz, AV = 1
VS = ±5 V
−40°C ≤ TA ≤ +125°C
VO = 0 V
−40°C ≤ TA ≤ +125°C
RL = 10 kΩ
1% distortion
To 0.01%
f = 1 kHz
0.1 Hz to 10 Hz
f = 1 kHz
OP191/OP291/OP491
Min Typ Max Unit
−5
75
67
25
±4.93
±4.90
±4.80
±4.65
±8.75
±6
80
75
80 500
1
80 700
1.25
30 65
95
0.1 11
22
+5
100
97
70
50
1.1
100
20
±4.99
±4.98
±4.95
±4.75
±16.00
±13
200
110
100
260 420
390 550
0.5
1.2
22
3
45
145
2
42
0.8
μV
mV
μV
mV
nA
nA
nA
nA
V
dB
dB
V/mV
μV/°C
pA/°C
pA/°C
V
V
V
V
mA
mA
Ω
dB
dB
μA
μA
V/μs
kHz
μs
MHz
Degrees
dB
μV p-p
nV/√Hz
pA/√Hz
Rev. E | Page 5 of 24
5 Page 
70
VS = 5V
60
TA = 25°C
BASED ON 600
OP AMPS
50
40
30
20
10
0
–0.50
–0.30
–0.10
0.10
0.30
INPUT OFFSET VOLTAGE (mV)
0.50
Figure 25. OP291 Input Offset Voltage Distribution, VS = 5 V
120
VS = 5V
100
–40°C < TA < +125°C
BASED ON 600 OP AMPS
80
60
40
20
0
0 1 2 34 567
INPUT OFFSET VOLTAGE (µV/°C)
Figure 26. OP291 Input Offset Voltage Drift Distribution, VS = 5 V
0.15
VS = 5V
0.10
0.05
VCM = 0V
0
–0.05
VCM = 5V
–0.10
–40
25 85
TEMPERATURE (°C)
125
Figure 27. Input Offset Voltage vs. Temperature, VS = 5 V
OP191/OP291/OP491
40
VS = 5V
30
20
VCM = 5V
+IB
–IB
10
0
–10
–20
–30
–40
–40
VCM = 0V
25 85
TEMPERATURE (°C)
–IB
+IB
125
Figure 28. Input Bias Current vs. Temperature, VS = 5 V
1.6
VS = 5V
1.4
1.2
1.0
VCM = 0V
0.8
0.6
0.4
0.2
0
–0.2
–40
VCM = 5V
25 85
TEMPERATURE (°C)
125
Figure 29. Input Offset Current vs. Temperature, VS = 5 V
36
VS = 5V
30
24
18
12
6
0
–6
–12
–18
–24
–30
–36
0
1234
COMMON-MODE INPUT VOLTAGE (V)
5
Figure 30. Input Bias Current vs. Common-Mode Input Voltage, VS = 5 V
Rev. E | Page 11 of 24
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet OP191.PDF ] | |
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