OP181 Analog Devices, OP181 Datasheet

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OP181

Manufacturer Part Number
OP181
Description
Ultralow Power, Rail-to-Rail Output Operational Amplifiers
Manufacturer
Analog Devices
Datasheet

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Part Number
Manufacturer
Quantity
Price
Part Number:
OP181G
Manufacturer:
ADI/亚德诺
Quantity:
20 000
a
GENERAL DESCRIPTION
The OP181, OP281 and OP481 are single, dual and quad
ultralow power, single-supply amplifiers featuring rail-to-rail
outputs. All operate from supplies as low as 2.0 V and are
specified at +3 V and +5 V single supply as well as 5 V dual
supplies.
Fabricated on Analog Devices’ CBCMOS process, the OP181
family features a precision bipolar input and an output that
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 safety monitoring,
portable equipment, battery and power supply control, and
signal conditioning and interface for transducers in very low
power systems.
The output’s ability to swing rail-to-rail and not increase supply
current, when the output is driven to a supply voltage, enables
the OP181 family to be used as comparators in very low power
systems. This is enhanced by their fast saturation recovery time.
Propagation delays are 250 s.
The OP181/OP281/OP481 are specified over the extended
industrial (–40 C to +85 C) temperature range. The OP181,
single, and OP281, dual, amplifiers are available in 8-pin plastic
DIPs and SO surface mount packages. The OP281 is also
available in 8-lead TSSOP. The OP481 quad is available in 14-
pin DIPs, narrow 14-pin SO and TSSOP packages.
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
FEATURES
Low Supply Current: 4 A/Amplifier max
Single-Supply Operation: 2.7 V to 12 V
Wide Input Voltage Range
Rail-to-Rail Output Swing
Low Offset Voltage: 1.5 mV
No Phase Reversal
APPLICATIONS
Comparator
Battery Powered Instrumentation
Safety Monitoring
Remote Sensors
Low Voltage Strain Gage Amplifiers
Ultralow Power, Rail-to-Rail Output
NOTE: PIN ORIENTATION IS EQUIVALENT FOR
EACH PACKAGE VARIATION
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
OUT A
OUT B
+IN A
+IN B
–IN A
–IN B
14-Lead Epoxy DIP
OUT A
NULL
+IN A
–IN A
–IN A
+IN A
V+
8-Lead TSSOP
V–
V–
NC = NO CONNECT
(RU Suffix)
8-Lead SO
8-Lead SO
1
2
3
4
7
5
6
(S Suffix)
(S Suffix)
(P Suffix)
1
4
OP281
1
4
1
4
OP181
OP281
OP481
OP181/OP281/OP481
8
PIN CONFIGURATIONS
5
8
5
8
5
Operational Amplifiers
World Wide Web Site: http://www.analog.com
NC
V+
OUT A
NULL
V+
OUT B
–IN B
+IN B
14
13
12
11
10
9
8
OUT D
–IN D
+IN D
V–
+IN C
–IN C
OUT C
OUT A
NULL
+IN A
–IN A
+IN A
–IN A
V–
V–
8-Lead Epoxy DIP
8-Lead Epoxy DIP
© Analog Devices, Inc., 1996
Narrow-Body SO
14-Lead TSSOP
1
2
3
4
NC = NO CONNECT
1
2
3
4
(RU Suffix)
(P Suffix)
(P Suffix)
(S Suffix)
14-Lead
7
1
OP181
1
OP481
7
OP481
OP281
14
8
14
8
8
7
6
5
8
7
6
5
NC
V+
OUT A
NULL
V+
OUT B
–IN B
+IN B

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OP181 Summary of contents

Page 1

... The output’s ability to swing rail-to-rail and not increase supply current, when the output is driven to a supply voltage, enables the OP181 family to be used as comparators in very low power systems. This is enhanced by their fast saturation recovery time. Propagation delays are 250 s. ...

Page 2

... OP181/OP281/OP481–SPECIFICATIONS ELECTRICAL SPECIFICATIONS Parameter INPUT CHARACTERISTICS Offset Voltage Input Bias Current 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 High Output Voltage Low ...

Page 3

... 100 k to GND – + 100 – + PSRR – + – + 100 GBP o e p-p 0 kHz –3– OP181/OP281/OP481 1 ) Min Typ Max Units 0.1 1 V/ pA/ C 4.925 V/ms 120 s 100 kHz 74 Degrees 10 V p-p 75 nV/ Hz <1 ...

Page 4

... OP181/OP281/OP481–SPECIFICATIONS ELECTRICAL SPECIFICATIONS Parameter INPUT CHARACTERISTICS Offset Voltage Input Bias Current Input Offset Current Input Voltage Range Common-Mode Rejection Large Signal Voltage Gain Offset Voltage Drift Bias Current Drift Offset Current Drift OUTPUT CHARACTERISTICS Output Voltage Swing Short Circuit Limit ...

Page 5

... Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +16 V Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . Gnd to V Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . 3.5 V Output Short-Circuit Duration to Gnd . . . . . . . . . . Indefinite Storage Temperature Range Package . . . . . . . . . . . . . . . . . . . – +150 C Operating Temperature Range OP181/OP281/OP481G . . . . . . . . . . . . . . . – +85 C Junction Temperature Range Package . . . . . . . . . . . . . . . . . . . – +150 C Lead Temperature Range (Soldering, 60 sec +300 C Package Type * JA ...

Page 6

... OP181/OP281/OP481–Typical Characteristics +2. + –1.0 –0.8 –0.6 –0.4 –0.2 0 0.2 0.4 0.6 0.8 1.0 INPUT OFFSET VOLTAGE – mV Figure 1. Input Offset Voltage Distribution 0 –0 +5V S –1.0 –1.5 –2.0 –2.5 –3.0 –3.5 –4.0 –4.5 –5.0 –40 – 100 120 TEMPERATURE – C Figure 4. Input Bias Current vs. ...

Page 7

... FREQUENCY – Hz Figure 14. Closed-Loop Gain vs. Frequency 160 V = 5V, +5V, +3V, +2.7V S 140 INFINITE 120 L 100 –20 –40 10 100 1k 10k 100k 1M FREQUENCY – Hz Figure 17. PSRR vs. Frequency –7– OP181/OP281/OP481 +2. + 100k 135 0 180 –10 225 –20 270 –30 100 1k 10k 100k 1M FREQUENCY – Hz Figure 12 ...

Page 8

... OP181/OP281/OP481 + 4Vp– INFINITE + 100 1k 10k 100k FREQUENCY – Hz Figure 19. Maximum Output Swing vs. Frequency 4 +5V S 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 –40 – 100 120 TEMPERATURE – C Figure 22. Supply Current/Amplifier vs. Temperature V = 1.35V A2 0mV 100k 100 50pF + 50mV 100µs Figure 25 ...

Page 9

... FREQUENCY – Hz Figure 29. Channel Separation vs. Frequency 0.00V S L CIRCUIT = +25 C VOL A 100 500mV 100µs Figure 31. Saturation Recovery Time –9– OP181/OP281/OP481 V = 1.35V V = 1Vp-p A2 0.00V 2kHz 100 500mV 500mV 50µs Figure 30. Saturation Recovery Time ...

Page 10

... the lowest input voltage excursion expected IN, MIN For example, an OP181 used with a single supply volt- age where the input signal could possibly go as low as –1.0 V. Because the amplifier is powered from a single supply ground, so the necessary series resistance should ...

Page 11

... The overdrive recovery time for the OP181 with the amplifier running from a 3 volt supply and increases to 100 s with a 10 volt supply. Figure 36 shows the result of the OP181 running from supply with its output being overdriven 100 SCALE 0 ...

Page 12

... V, single-supply current monitor that can be incorpo- rated into the design of a voltage regulator with fold-back current limiting or a high current power supply with crowbar protection. The design capitalizes on the OP181’s common- mode range that extends to ground. Current is monitored in the power supply return path where a 0.1 +3V creates a very small voltage drop ...

Page 13

... A is drawn by the microphone itself. A CR2032 3 V lithium battery has a life expectancy of 160 mA hours, which means this circuit could run continuously for 640 hours on a single battery. SPICE Macro-Model * OP181 SPICE Macro-model 1µF * 9/96, Ver. 1 MIC OUT * * Copyright 1996 by Analog Devices * * Refer to “ ...

Page 14

... OP181/OP281/OP481 ECM1 11 98 POLY(2) (1, 98) (2, 98 1.59E6 100E- 283 * * POLE AT 900kHz * EREF 98 0 (90 ( 1E6 177E- POLE AT 500kHz * (20, 98 1E6 320E- GAIN STAGE * 5E- 65. 65E6 (22, 98) 4.08E 0 0 OUTPUT STAGE * ISY 99 50 1.375E-6 RS1 99 90 10E6 RS2 90 50 10E6 M1 45 ...

Page 15

... SEATING PLANE 0.0160 (0.41) 0.006 (0.15) 0.002 (0.05) 0.028 (0.70) 8 SEATING 0 0.020 (0.50) PLANE –15– OP181/OP281/OP481 14-Lead Plastic DIP (N-14) 0.795 (20.19) 0.725 (18.42 0.280 (7.11) 0.240 (6.10) 0.325 (8.25 0.195 (4.95) 0.300 (7.62) 0.060 (1.52) 0.115 (2.93) PIN 1 0 ...

Page 16

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