ADA4077-1BRZ-R7

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The ADA4077-1BRZ-R7 is an instrumentation low-noise operational amplifier that belongs in the family of linear amplifiers and operational amplifiers, buffer amplifiers. This operational amplifier offers a low-noise solution for instrumentation amplification with excellent noise and dynamic performance over a wide gain range. The ADA4077-1BRZ-R7 has a slew rate of 12V/microsecond, a high common mode rejection ratio of 70dB and a common mode input voltage range of up to 4V. It also has a high power supply rejection ratio of 70dB and a supply voltage range of 3.3 to 6V.

The ADA4077-1BRZ-R7 has a wide range of applications in test, data acquisition, and instrumentation systems. Its low-noise performance makes it well suited for low-level signal conditioning for high-performance sensor conditioning, including accelerometer and seismometer preamplifiers. Additionally, it is popular for filter and buffer applications, bridge and amplifier configurations for strain gauge-based transducers, buffering and driving sensing elements, and medical instrumentation.

To understand the working principle of the ADA4077-1BRZ-R7 we can look at its schematic diagram. The ADA4077-1BRZ-R7 consists of an input stage, a gain-setting stage, a low-noise output stage and a feedback network. The input stage consists of two difference amplifiers and four gain cells. These difference amplifiers are used to amplify the differential input signal and the gain cells are used to set the gain of the amplifier. The gain-setting stage consists of two differential amplifiers that are connected in a voltage-controlled manner and set the gain of the amplifier. The low-noise output stage consists of two complementary emitter-coupled pairs that provide a high-output current drive. The feedback network consists of three resistors and is used to set the output level of the amplifier.

The ADA4077-1BRZ-R7 is an excellent low-noise operational amplifier that has a wide range of applications in instrumentation, test, and data acquisition systems. It is well suited for low-level signal conditioning for high-performance sensor conditioning and filter, buffer, amplifier, and medical instrumentation applications. Its working principle involves an input stage, a gain-setting stage, a low-noise output stage, and a feedback network.

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