OP295G Analog Devices, OP295G Datasheet

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OP295G

Manufacturer Part Number
OP295G
Description
Manufacturer
Analog Devices
Datasheet

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a
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. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
GENERAL DESCRIPTION
Rail-to-rail output swing combined with dc accuracy are the key
features of the OP495 quad and OP295 dual CBCMOS operational
amplifiers. By using a bipolar front end, lower noise and higher
accuracy than that of CMOS designs has been achieved. Both input
and output ranges include the negative supply, providing the user
“zero-in/zero-out” capability. For users of 3.3 V systems such as
lithium batteries, the OP295/OP495 is specified for 3 V operation.
Maximum offset voltage is specified at 300 mV for 5 V operation,
and the open-loop gain is a minimum of 1000 V/mV. This yields
performance that can be used to implement high accuracy systems,
even in single-supply designs.
The ability to swing rail-to-rail and supply 15 mA to the load makes
the OP295/OP495 an ideal driver for power transistors and “H”
bridges. This allows designs to achieve higher efficiencies and to
transfer more power to the load than previously possible without
the use of discrete components. For applications that require
REV. C
FEATURES
Rail-to-Rail Output Swing
Single-Supply Operation: 3 V to 36 V
Low Offset Voltage: 300 V
Gain Bandwidth Product: 75 kHz
High Open-Loop Gain: 1,000 V/mV
Unity-Gain Stable
Low Supply Current/Per Amplifier: 150 A max
APPLICATIONS
Battery-Operated Instrumentation
Servo Amplifiers
Actuator Drives
Sensor Conditioners
Power Supply Control
driving inductive loads, such as transformers, increases in efficiency
are also possible. Stability while driving capacitive loads is another
benefit of this design over CMOS rail-to-rail amplifiers. This is
useful for driving coax cable or large FET transistors. The
OP295/OP495 is stable with loads in excess of 300 pF.
The OP295 and OP495 are specified over the extended industrial
(–40∞C to +125∞C) temperature range. OP295s are available in
8-lead plastic DIP plus SO-8 surface-mount packages. OP495s are
available in 14-lead plastic and SO-16 surface-mount packages.
Contact your local sales office for MIL-STD-883 data sheet.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
OUT A
OUT B
OUT A
8-Lead Narrow-Body SO
–IN A
+IN A
+IN B
–IN B
–IN A
+IN A
V+
V–
14-Lead Epoxy DIP
1
4
5
6
7
2
3
3
4
1
2
(P Suffix)
(S Suffix)
OP495
OP295
Dual/Quad Rail-to-Rail
Operational Amplifiers
PIN CONNECTIONS
10
14
13
12
11
8
7
6
5
9
8
V+
OUT B
+IN B
OUT D
–IN D
+IN D
V–
+IN C
–IN C
OUT C
–IN B
OP295/OP495
OUT A
+IN A
–IN A
OUT A
OUT B
–IN A
+IN A
+IN B
–IN B
V–
16-Lead SO (300 Mil)
NC
V+
8-Lead Epoxy DIP
© Analog Devices, Inc., 2002
1
2
3
4
NC = NO CONNECT
1
2
3
4
5
6
7
8
(Not to Scale)
(P Suffix)
(S Suffix)
TOP VIEW
OP495
OP295
www.analog.com
16
15
14
13
12
11
10
9
8
7
6
5
OUT D
–IN D
+IN D
V–
+IN C
–IN C
OUT C
NC
V+
OUT B
+IN B
–IN B

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OP295G Summary of contents

Page 1

... For applications that require REV. C 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 ...

Page 2

OP295/OP495–SPECIFICATIONS ELECTRICAL CHARACTERISTICS Parameter Symbol INPUT CHARACTERISTICS Offset Voltage V OS Input Bias Current I B Input Offset Current I OS Input Voltage Range V CM Common-Mode Rejection Ratio CMRR Large Signal Voltage Gain Offset Voltage Drift ...

Page 3

ELECTRICAL CHARACTERISTICS Parameter Symbol INPUT CHARACTERISTICS Offset Voltage V OS Input Bias Current I B Input Offset Current I OS Input Voltage Range V CM Common-Mode Rejection Ratio CMRR Large Signal Voltage Gain Offset Voltage Drift OS ...

Page 4

... V Output Short-Circuit Duration . . . . . . . . . . . . . . . . . Indefinite Storage Temperature Range P, S Package . . . . . . . . . . . . . . . . . . . . . . . . –65∞C to +150∞C Operating Temperature Range OP295G, OP495G . . . . . . . . . . . . . . . . . . . –40∞C to +125∞C Junction Temperature Range P, S Package . . . . . . . . . . . . . . . . . . . . . . . . –65∞C to +150∞C Lead Temperature Range (Soldering, 60 Sec 300∞C NOTES 1 Absolute maximum ratings apply to packaged parts, unless otherwise noted ...

Page 5

3.00 2.90 2.80 2.70 2.60 2.50 –50 – TEMPERATURE – C TPC 3. Output Voltage Swing vs. Temperature 200 BASED ON 600 OP AMPS 175 150 125 100 –250 ...

Page 6

OP295/OP495 –50 – TEMPERATURE – C TPC 9. Input Bias Current vs. Temperature 40 SOURCE 35 30 SINK 25 SOURCE 20 SINK –50 –25 ...

Page 7

APPLICATIONS Rail-to-Rail Application Information The OP295/OP495 has a wide common-mode input range extending from ground to within about 800 mV of the positive supply. There is a tendency to use the OP295/OP495 in buffer applications where the input voltage could ...

Page 8

OP295/OP495 Table I. Single-Supply Low Noise Preamp Performance 270 W R1 200 W R3 100 Hz 3.15 nV/÷ 4.2 nV/÷ 4 ...

Page 9

This instrumentation amplifier can operate from a supply voltage as low Single-Supply RTD Thermometer Amplifier This RTD amplifier takes advantage of the rail-to-rail swing of the OP295/OP495 to achieve a ...

Page 10

OP295/OP495 Low-Dropout Linear Voltage Regulator Figure 10 shows a simple 3 V voltage regulator design. The regulator can deliver 50 mA load current while allowing a 0.2 V dropout voltage. The OP295/OP495’s rail-to-rail output swing handily drives ...

Page 11

V+ 100k 58. FREQ OUT 1 OP295/ F OSC 100k OP495 R C Figure 13. Square Wave Oscillator Has Stable Frequency Regardless of Supply Changes 90.9k 90.9k 10k V+ 2 OP295/ ...

Page 12

... Revision History Location 03/02—Data Sheet changed from REV REV. C. Figure changes to PIN CONNECTIONS ..................................................................................................................................... 1 Deletion of OP295GBC and OP495GBC from ORDERING GUIDE .......................................................................................... 3 Deletion of WAFER TEST LIMITS table .................................................................................................................................... 3 Changes to ABSOLUTE MAXIMUM RATINGS........................................................................................................................ 4 Deletion of DICE CHARACTERISTICS .................................................................................................................................... 4 OUTLINE DIMENSIONS Dimensions shown in inches and (mm) ...

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