OP495G Analog Devices, OP495G Datasheet

OP495G

Manufacturer Part Number

OP495G

Description

Manufacturer

Analog Devices

Datasheet

1.OP495G.pdf (12 pages)

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GENERAL DESCRIPTION

Rail-to-rail output swing combined with dc accuracy are the key

features of the OP495 quad and OP295 dual CBCMOS opera-

tional 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, pro-

viding the user “zero-in/zero-out” capability. For users of 3.3

volt systems such as lithium batteries, the OP295/OP495 is

specified for three volt operation.

Maximum offset voltage is specified at 300 V for +5 volt opera-

tion, 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 efficien-

cies and to transfer more power to the load than previously pos-

sible without the use of discrete components. For applications

REV. B

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

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: 1000 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

that require driving inductive loads, such as transformers, in-

creases 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 indus-

trial (–40 C to +125 C) temperature range. OP295s are avail-

able in 8-pin plastic and ceramic DIP plus SO-8 surface mount

packages. OP495s are available in 14-pin 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: 617/329-4700

OUT A

OUT B

+IN A

+IN B

–IN A

+IN A

–IN A

–IN B

V+

8-Lead Narrow-Body SO

V–

14-Lead Epoxy DIP

OP295

(P Suffix)

(S Suffix)

OP495

Dual/Quad Rail-to-Rail

Operational Amplifiers

PIN CONNECTIONS

V+

OUT B

+IN B

–IN B

OUT D

–IN D

+IN D

+IN C

–IN C

OUT C

V–

OUT A

+IN A

–IN A

OP295/OP495

OUT A

OUT B

+IN A

+IN B

–IN A

–IN B

V–

V+

16-Lead SO (300 Mil)

8-Lead Epoxy DIP

NC = NO CONNECT

OP295

(P Suffix)

(S Suffix)

OP495

Fax: 617/326-8703

+IN D

+IN C

OUT D

–IN D

V–

–IN C

OUT C

V+

OUT B

+IN B

–IN B

Related parts for OP495G

OP495G Summary of contents

Page 1

... For applications REV. B 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 ...

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 A VO Offset Voltage Drift V ...

Page 3

... CM PSRR 1 2 OUT L ORDERING GUIDE Package Temperature Option Model Range N-8 OP495GP – +125 C 14-Pin Plastic DIP N-14 SO-8 OP495GS – +125 C 16-Pin SOL OP495GBC +25 C –3– OP295/OP495 Min Typ Max Units 30 300 V 800 –15 +13 110 dB 1000 4000 V/ 14.95 V 14.80 V – ...

Page 4

... V Output Short-Circuit Duration . . . . . . . . . . . . . . . . . Indefinite Storage Temperature Range P, S Package . . . . . . . . . . . . . . . . . . . . . . . . – +150 C Operating Temperature Range OP295G, OP495G . . . . . . . . . . . . . . . . . . . – +125 C Junction Temperature Range P, S Package . . . . . . . . . . . . . . . . . . . . . . . . – +150 C Lead Temperature Range (Soldering, 60 Sec +300 C 3 ...

Page 5

TEMPERATURE – C Output Voltage Swing vs. Temperature 200 BASED ON 600 OP AMPS 175 150 125 100 –250 –200 –150 –100 – ...

Page 6

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

Page 7

APPLICATIONS Rail-to-Rail Applications Information The OP295/OP495 has a wide common-mode input range ex- tending 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 ...

Page 8

OP295/OP495 Table I. Single Supply Low Noise Preamp Performance 270 R3, R4 200 e @ 100 Hz 3.15 nV 4 ...

Page 9

This instrumentation amplifier can operate from a supply voltage as low as 3 volts. A Single Supply RTD Thermometer Amplifier This RTD amplifier takes advantage of the rail-to-rail swing of the OP295/OP495 to achieve ...

Page 10

OP295/OP495 current budget with which the circuit must operate. This circuit consumes only 1.4 mA maximum quiescent current, making 2 current available to power additional signal conditioning circuitry or to power a bridge circuit Volt Low-Dropout ...

Page 11

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

Page 12

OP295/OP495 8 Lead Plastic DIP (P Suffix 0.280 (7.11) 0.240 (6.10 0.070 (1.77) 0.045 (1.15) 0.430 (10.92) 0.348 (8.84) 0.015 0.210 (0.381) TYP (5.33) MAX 0.130 0.160 (4.06) (3.30) 0.115 (2.93) MIN SEATING 0.022 (0.558) 0.100 ...

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