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OP495:  Rail-to-Rail Quad Operational Amplifier

Product Details

Newer Alternatives:
  • ADA4096-4 quad channel version offering 30V supply capability, higher bandwidth, lower drift and input bias current, and Input Overvoltage Protection.

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.

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.


  • Battery-operated instrumentation
  • Servo amplifiers
  • Actuator drives
  • Sensor conditioners
  • Power supply control


  • 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

Pin Configuration Diagram for OP495


Title Content Type File Type
OP295/OP495: Dual/Quad Rail-to-Rail Operational Amplifiers Data Sheet (Rev G, 08/2009) (pdf, 389 kB) Data Sheets PDF
AN-649: Using the Analog Devices Active Filter Design Tool  (pdf, 5301 kB) Application Notes PDF
Low-Power, Low-Voltage IC Choices for ECG System Requirements
(Analog Dialogue, Vol. 29, No. 3, 1995)
Technical Articles HTML
Low-Power, Low-Voltage IC Choices for ECG System Requirements
(Analog Dialogue, Vol. 29, No. 3, 1995)
Analog Dialogue HTML
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
OP495 SPICE Macro-Model SPICE Models HTML

Evaluation Kits & Symbols & Footprints

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

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Price, packaging, availability

OP495 Model Options
Model Package Pins Temp.
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
OP495GPZ Status: Production 14 ld PDIP 14 Ind Tube, 25 $5.03 $4.53 Y  Material Info PCN Purchase
OP495GS Status: Production 16 ld SOIC - Wide 16 Ind Tube, 47 $5.80 $5.23 N  Material Info PCN Purchase
OP495GS-REEL Status: Last Time Buy 16 ld SOIC - Wide 16 Ind Reel, 1000 - $5.23 N  Material Info PCN/PDN Purchase
OP495GSZ Status: Production 16 ld SOIC - Wide 16 Ind Tube, 47 $5.03 $4.53 Y  Material Info PCN Purchase
OP495GSZ-REEL Status: Production 16 ld SOIC - Wide 16 Ind Reel, 1000 - $4.53 Y  Material Info PCN Purchase
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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