op495gbc Analog Devices, Inc., op495gbc Datasheet

op495gbc

Manufacturer Part Number

op495gbc

Description

Dual/quad Rail-to-rail Operational Amplifiers

Manufacturer

Analog Devices, Inc.

Datasheet

1.OP495GBC.pdf (16 pages)

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FEATURES

Rail-to-rail output swing

Single-supply operation: 3 V to 36 V

Low offset voltage: 300 μV

Gain bandwidth product: 75 kHz

High open-loop gain: 1000 V/mV

Unity-gain stable

Low supply current/per amplifier: 150 μA maximum

APPLICATIONS

Battery-operated instrumentation

Servo amplifiers

Actuator drives

Sensor conditioners

Power supply control

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 those of CMOS designs have been

achieved. Both input and output ranges include the negative

supply, providing the user with zero-in/zero-out capability. For

users of 3.3 V systems such as lithium batteries, the OP295/OP495

are specified for 3 V operation.

Maximum offset voltage is specified at 300 μV 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 ideal drivers 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 such as transformers that require driving

inductive loads, 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

are stable with loads in excess of 300 pF.

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.

Trademarks and registered trademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.461.3113

The OP295 and OP495 are specified over the extended indus-

trial (−40°C to +125°C) temperature range. The OP295 is

available in 8-lead PDIP and 8-lead SOIC_N surface-mount

packages. The OP495 is available in 14-lead PDIP and 16-lead

SOIC_W surface-mount packages.

OUT A

OUT B

OUT A

OUT B

Dual/Quad Rail-to-Rail

Operational Amplifiers

OUT A

–IN A

+IN A

–IN A

+IN A

+IN B

–IN B

Figure 1. 8-Lead Narrow-Body SOIC_N

+IN A

+IN B

–IN A

–IN B

–IN A

+IN A

PIN CONFIGURATIONS

V+

V–

V+

V–

Figure 4. 16-Lead SOIC_W

Figure 3. 14-Lead PDIP

Figure 2. 8-Lead PDIP

NC = NO CONNECT

(Not to Scale)

TOP VIEW

OP495

OP295

(S Suffix)

(P Suffix)

(S Suffix)

OP295

OP295/OP495

OUT D

–IN D

+IN D

V–

+IN C

–IN C

OUT C

V+

OUT B

–IN B

+IN B

V+

OUT B

–IN B

+IN B

OUT D

–IN D

+IN D

V–

+IN C

–IN C

OUT C

www.analog.com

Related parts for op495gbc

op495gbc Summary of contents

Page 1

... The OP295 is available in 8-lead PDIP and 8-lead SOIC_N surface-mount packages. The OP495 is available in 14-lead PDIP and 16-lead SOIC_W surface-mount packages. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 Fax: 781.461.3113 ©2006 Analog Devices, Inc. All rights reserved. V+ OUT B – ...

Page 2

... Single-Supply Differential Speaker Driver.............................. 13 High Accuracy, Single-Supply, Low Power Comparator ...... 13 Outline Dimensions ....................................................................... 14 Ordering Guide .......................................................................... 16 3/02—Rev Rev. C Figure changes to Pin Connections ................................................1 Deleted OP295GBC and OP495GBC from Ordering Guide ......3 Deleted Wafer Test Limits Table......................................................3 Changes to Absolute Maximum Ratings........................................4 Deleted Dice Characteristics............................................................4 Rev Page ...

Page 3

SPECIFICATIONS ELECTRICAL CHARACTERISTICS 25°C, unless otherwise noted Table 1. Parameter Symbol INPUT CHARACTERISTICS Offset Voltage V Input Bias Current I Input Offset Current I Input Voltage Range ...

Page 4

OP295/OP495 Parameter Symbol OUTPUT CHARACTERISTICS Output Voltage Swing High V Output Voltage Swing Low V POWER SUPPLY Power Supply Rejection Ratio PSRR Supply Current per Amplifier I DYNAMIC PERFORMANCE Slew Rate SR Gain Bandwidth Product GBP Phase Margin θ NOISE ...

Page 5

ABSOLUTE MAXIMUM RATINGS Table 4. 1 Parameter Supply Voltage Input Voltage 2 Differential Input Voltage Output Short-Circuit Duration Storage Temperature Range P, S Package Operating Temperature Range OP295G, OP495G Junction Temperature Range P, S Package Lead Temperature (Soldering, 60 sec) ...

Page 6

OP295/OP495 TYPICAL PERFORMANCE CHARACTERISTICS 140 120 100 –50 – TEMPERATURE (°C) Figure 5. Supply Current Per Amplifier vs. Temperature 15.2 V 15.0 14.8 14.6 14.4 14.2 –14.4 –14.6 –14.8 –15.0 –15.2 –50 –25 0 ...

Page 7

BASED ON 1200 OP AMPS 450 400 350 300 250 200 150 100 50 0 –100 – 100 150 200 INPUT OFFSET VOLTAGE (µV) Figure 11. OP495 Input Offset (V ) Distribution OS 500 BASED ON 1200 ...

Page 8

OP295/OP495 25° 100mV SOURCE 10mV SINK 1mV 100µV 1µA 10µA 100µA 1mA LOAD CURRENT Figure 17. Output Voltage to Supply Rail vs. Load Current 10mA Rev Page ...

Page 9

APPLICATIONS RAIL-TO-RAIL APPLICATION INFORMATION The OP295/OP495 have 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 10

OP295/OP495 Finally, the potentiometer, R8, is needed to adjust the offset voltage to null it to zero. Similar performance can be obtained using an OP90 as the output amplifier with a savings of about 185 μA of supply current. However, ...

Page 11

V IN OP295/ 6 OP495 – – 100kΩ 20kΩ 20kΩ V REF 200kΩ REF R G Figure ...

Page 12

OP295/OP495 17.8kΩ DAC8043 1.23V I REF OUT 2 GND CLK SRI LD AD589 41.2kΩ DIGITAL CONTROL R3 5kΩ TOTAL POWER DISSIPATION = ...

Page 13

Amplifier A1 provides error amplification for the normal voltage regulation loop. As long as the output current is less than 1 A, the output of Amplifier A2 swings to ground, reverse- biasing the diode and effectively taking itself out of ...

Page 14

OP295/OP495 OUTLINE DIMENSIONS 0.150 (3.81) 0.130 (3.30) 0.115 (2.92) 0.022 (0.56) 0.018 (0.46) 0.014 (0.36) 0.400 (10.16) 0.365 (9.27) 0.355 (9.02 0.280 (7.11) 0.250 (6.35) 1 0.240 (6.10) 4 PIN 1 0.100 (2.54) BSC 0.060 (1.52) 0.210 MAX ...

Page 15

PIN 1 0.100 (2.54) BSC 0.210 (5.33) MAX 0.015 0.150 (3.81) (0.38) MIN 0.130 (3.30) 0.110 (2.79) SEATING PLANE 0.022 (0.56) 0.005 (0.13) 0.018 ...

Page 16

... OP495GS-REEL 1 OP495GSZ 1 OP495GSZ-REEL Pb-free part. ©2006 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. Temperature Range Package Description −40°C to +125°C 8-Lead Plastic DIP −40°C to +125°C 8-Lead Plastic DIP − ...

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