MC33502DR2

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The MC33502DR2 from Motorola Semiconductor is an integrated amplifier designed for instrumentation, OP amps, and buffer amp applications. It has a discrete-design architecture that enables precision output adjustments and flexible methods for selecting a wide range of output configurations. This product is suitable for single-ended, differential and pseudo-differential applications.

The MC33502DR2 is a high-voltage version of the original MC33502DR1 monolithic amplifier. It is a low-noise instrumentation amplifier that offers a high-voltage rail-to-rail input/output range of 44V. The device is designed to provide excellent dynamic performance and high common-mode rejection ratio (CMRR), allowing differential signals to be accurately amplified without complex shielding requirements.

The MC33502DR2’s gain-setting pin can be adjusted to set the amplifier’s gain from 0.1 to 256, depending on the external components that are connected to it. This flexibility allows the circuit designer to choose the appropriate gain for their instrumentation, OP amp, and buffer amp applications.

The MC33502DR2’s working principle is based on a comparison feedback circuit, which allows adjustment of gain, offset and common-mode rejection. The amplifier’s output stage uses a push-pull architecture for high linearity. The gain-setting resistor is located near the difference amplifier, ensuring a high CMRR and allowing AC common-mode rejection of up to 90dB.

The device uses an 8-pin SOIC package, making it easy to design the device into a variety of microprocessor-based systems. The MC33502DR2 also incorporates the Schlumberf process to achieve superior performance and better reliability over temperature. This process allows the IC’s dielectric breakdown voltage to be as high as 150V, which is much higher than the normal range.

The MC33502DR2 is suitable for applications such as instrumentation, current sensing, voltage regulation, and audio applications. It is especially suited for use in automotive and industrial grade circuits due to its high common-mode rejection ratio and operating temperature range. Additionally, the amplifier can be used to amplify high-gain selections for voltage-to-frequency and frequency-to-voltage conversion.

In conclusion, the MC33502DR2 integrated amplifier is a perfect solution for instrumentation, OP amp, and buffer amp applications. It offers a wide range of output configurations and provides an excellent CMRR performance and a high common-mode rejection ratio. The amplifier also features a wide operating-temperature range and superior dynamic performance, making it the ideal choice for high-voltage circuit designs.

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