LM725CN/NOPB

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An LM725CN/NOPB is a device that combines high performance with low cost in a variety of applications. It can be used in linear amplifcation, instrumentation, and buffering in different systems such as communications, control, automotive, and industrial automation.

Introduction

The LM725CN/NOPB is a versatile operational amplifier (op-amp) for general purpose applications. It has a dual-channel configuration with one amplifier per channel. With its miniature size, this amplifier is much more cost effective than other models and has a much less power requirement. It is one of several available components from the Low Voltage floating input and output precision line of Linear Technology Corporation\'s high performance linear and mixed-signal products.

Application Field

The LM725CN/NOPB is predominantly used as a precision gain block in signal processing, instrumentation, and control systems, as well as other applications. Some of these applications include:

• Data acquisition systems
• Communications systems
• Motor controls
• Industrial automation systems
• Automotive systems such as car, truck, and power generation
• Medical devices

It has a wide range of potential applications and is suitable for both hobbyist and professional users. Its miniaturization allows it to be implemented in space-constrained applications, and its dual-channel configuration makes it suitable for high-speed signal processing.

Working Principle

The LM725CN/NOPB consists of two independent amplifier channels, each with its own output. Each amplifier has a power supply range of ±4 to ±12 volts and an output voltage swing of either rail-to-rail or a positive output voltage swing up to +13 volts. Each amplifier uses a grounded-source Darlington configuration to achieve high bandwidth, high input impedance, and to minimize the effect of input capacitance on the amplifier’s dynamic performance.

The LM725CN/NOPB is designed to amplify high-frequency signals in a wide range of signal processing systems. This can be done using the amplifier’s high gain bandwidth product of 21 MHz, low-level distortion, stabilizing capacitors, and high slew rates. This combination makes it suitable for use in high-speed, high-fidelity signal processing systems.

The amplifier’s differential inputs are typically biased to the midpoint voltage of a balanced signal, which is usually +2.5 volts. This allows the amplifier to produce an output signal that reflects the input signal with minimal distortion. An integrated low-voltage protection circuit allows for protection against overvoltage conditions, providing additional safety for applications that require low-voltage operation.

Conclusion

The LM725CN/NOPB is a versatile operational amplifier that is suitable for a variety of applications. Its miniature size and low power requirement makes it an attractive choice for precision gain blocks in signal processing and control systems, as well as automotive and industrial automation. Its high gain bandwidth product and low-level distortion makes it suitable for use in high-speed and high-fidelity signal processing systems. Finally, an integrated low-voltage protection circuit provides additional safety for applications involving low-voltage operation.

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