BD7542SF-E2

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The BD7542SF-E2 is a precision, low power dual operational amplifier designed specifically for instrumentation and measurement applications. It is designed with a wide operating temperature range, up to -40 ° C to 105 ° C, making it extremely suitable for a variety of industrial, consumer, and medical applications. It is also suitable for noise-critical applications such as instrumentation, audio and video systems, because of its low noise, high common-mode rejection ratio and high slew rate.

The BD7542SF-E2 is a dual operational amplifier that offers high performance in a small package. It operates from a single 2.7 V supply and features an industry-leading combination of features, including low operating current, rail-to-rail input and output capabilities, low noise, and high speed. The device also features excellent common-mode rejection ratio and high output current capability, all in an 8-pin mini-size package.

The BD7542SF-E2 is a low-noise and high-precision operational amplifier designed to meet a variety of instrumentation and measurement requirements. It provides low operating current, high open-loop gain, low distortion and excellent balance between high-speed and low-power operation, making it ideal for a variety of applications such as transducer conditioning, data acquisition systems, low-power audio, and video applications. The BD7542SF-E2 provides the ability to drive capacitive loads, making it particularly suited for applications such as sensor-conditioning and power-control applications.

The BD7542SF-E2\'s working principle is based on the application of an actual bridge circuit. Its input amplifiers and output stages are connected in a bridge circuit composed of four resistors, four diodes, and two capacitors. This passive network is responsible for the amplification of the input signal, for the proper isolation of the input and output stages, and for the proper operation of the output stage.

The input amplifiers buffer the input signal and pass this buffered signal to the output stages, with a gain of 1. This is accomplished by a voltage divider comprised of four resistors, connected at their center to the virtual ground node of the input amplifiers. The two resistors between the virtual ground and the output stages determine the gain of the output stages.

The output stages of the BD7542SF-E2 are composed of two transistors (PNP and NPN), connected in a forward-current mirror configuration. The gain of the output stages is determined by the ratio of the resistors connecting the output stages to the virtual ground. The current passing through the output transistors is monitored using a pair of diodes connected in Series. This ensures that the output transistors are always in limiting mode and that the output is always within specifications.

The BD7542SF-E2\'s optimal performance characteristics and features make it ideal for applications such as data acquisition systems, precision control systems, transducer conditioning and low-power audio, and video systems. In addition to its high performance aspects and low cost, the device also features an industry-leading combination of features such as low operating current, rail-to-rail input and output capabilities, low noise, high speed, and excellent common-mode rejection ratio. The BD7542SF-E2 is an ideal device for a wide range of instrumentation, audio, and video applications.

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