OP270 Dual Op-Amp: Pinout, Equivalent and Datasheet

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The OP270 is a high-performance, monolithic, dual operational amplifier with exceptionally low voltage noise density (5 nV/√Hz maximum at 1 kHz). It offers comparable performance to the industry-standard OP27 from Analog Devices, Inc. The OP270 features an input offset voltage of less than 75 μV and an offset drift of less than 1 μV/°C, guaranteed over the full military temperature range. The open-loop gain of the OP270 is more than 1,500,000 into a 10 kΩ load, ensuring excellent gain accuracy and linearity, even in high gain applications.

This article provides you with a basic overview of the OP270, including its pin descriptions, features, specifications, etc., to help you quickly understand what OP270 is.

● Very low noise density of 5 nV/√Hz at 1 kHz maximum

● Excellent input offset voltage of 75 μV maximum

● Low offset voltage drift of 1 μV/°C maximum

● Very high gain of 1500 V/mV minimum

● Outstanding CMR of 106 dB minimum

● Slew rate of 2.4 V/μs typical

● Gain bandwidth product of 5 MHz typical

● Industry-standard 8-lead dual pinout

The OP270 is unity-gain stable with a gain-bandwidth product of 5 MHz and a slew rate of 2.4 V/μs. The OP270 offers excellent amplifier matching, which is important for applications such as multiple gain blocks, low noise instrumentation amplifiers, dual buffers, and low noise active filters. The OP270 conforms to the industry-standard 8-lead CERDIP and PDIP pinouts.

The OP270 is a very low noise dual op-amp, exhibiting a typical voltage noise density of only 3.2 nV/√Hz at 1 kHz. Because the voltage noise is inversely proportional to the square root of the collector current, the exceptionally low noise characteristic of the OP270 is achieved in part by operating the input transistors at high collector currents. The OP270 is unity-gain stable and capable of driving large capacitive loads without oscillating.

Analog Devices Inc. OP270EZ technical specifications, attributes, parameters and parts with similar specifications to Analog Devices Inc. OP270EZ.

Functional Block Diagram

Simplified Schematic (One of Two Amplifiers Is Shown)

● Low Phase Error Amplifier

● Five-Band, Low Noise Graphic Equalizer

● Dual Programmable Gain Amplifier

Channel Separation Test Circuit

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Analog Devices is an international market leader in the design, production, and commercialization of a large range of high-performance integrated circuits (ICs) for analog, mixed-signal, and digital signals (DSP) processing of almost all electronic systems. Since we started in 1965, the focus has been on the engineering challenge in electronic equipment related to signal to process. Our signal processing solutions, utilized by over 100,000 customers worldwide, play a key role in the conversion, conditioning, and processing of real-world events such as temperature, pressure, sonority, illumination, speed, and movement to electric signals for a wide range of electronic devices.

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