OP285 - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

OP285
Manufacturer

ADI
ChipWorker Part#

CW430823653
Description

Dual 9MHz Precision Operational Amplifier
Documentation

Datasheet

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OP285 Specifications

Attribute	Attribute Value

Part Number	OP285
Manufacturer	ADI
ChipWorker Part#	CW430823653
Documentation	Datasheet
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Product Lifecycle Status	Unknown

Product Description

Product Details
The OP285 is a precision high-speed amplifier featuring the Butler Amplifier front-end. This new front-end design combines the accuracy and low noise performance of bipolar transistors with the speed of JFETs. This yields an amplifier with high slew rates, low offset and good noise performance at low supply currents. Bias currents are also low compared to bipolar designs.
The OP285 offers the slew rate and low power of a JFET amplifier combined with the precision, low noise and low drift of a bipolar amplifier. Input offset voltage is laser-trimmed and guaranteed less than 250 μV. This makes the OP285 useful in dc-coupled or summing applications without the need for special selections or the added noise of additional offset adjustment circuitry. Slew rates of 22 V/μs and a bandwidth of 9 MHz make the OP285 one of the most accurate medium speed amplifiers available.
The combination of low noise, speed and accuracy can be used to build high speed instrumentation systems. Circuits such as instrumentation amplifiers, ramp generators, bi-quad filters and dc-coupled audio systems are all practical with the OP285. For applications that require long term stability, the OP285 has a guaranteed maximum long term drift specification.
The OP285 is specified over the XIND—extended industrial— (−40°C to +85°C) temperature range. The OP285 is available in an 8-lead SOIC_N surface mount package.
**Applications**
High performance audio
Active filters
Fast amplifiers
Integrators
### Features and Benefits
Low offset voltage: 250 μV
Low noise: 6 nV/√Hz
Low distortion: 0.0006%
High slew rate: 22 V/μs
Wide bandwidth: 9 MHz
Low supply current: 5 mA
Low offset current: 2 nA
Unity-gain stable
8-lead SOIC_N package

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