LM2904PW

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The LM2904 is a high performance dual operational amplifier integrated circuit originally developed by National Semiconductors. It has the ability to deliver a power output of up to 2 watts and operates from a single supply voltage range of +4V to +40V. Its characteristics make it suitable for a variety of applications, including audio applications, as well as instrumentation and control systems. This article looks at the LM2904’s key features and applications, as well as how its working principle.

Features

The LM2904 is a dual operational amplifier, with pins 1 and 2 being the inputs and pins 3 and 4 being the outputs. It features a low power consumption of just 0.5 Watts, while it can deliver a power output up to 2 Watts, depending on the voltage applied to the input. It also has an adjustable gain range of 0 to 10, meaning it is suitable for a range of applications. The LM2904 is available in 5-pin and 8-pin packages, and is suitable for single supply operation and thermally stable over temperature range of -20°C to +85°C.

The LM2904 is a family of linear and instrumentation amplifiers, featuring typical low noise and distortion levels. It is suitable for a variety of applications, including audio, instrumentation and control, as well as isolation amplifiers. It features a high common-mode rejection ratio of up to 120dB and a supply voltage range of 4V to 40V.

Applications

The LM2904 is suitable for a range of applications, including:

• Linear amplifiers - The LM2904 is an ideal choice for use in linear amplifier applications, due to its low power consumption and adjustable gain range.
• Instrumentation and control - The LM2904 can be used in a number of control and instrumentation applications, such as audio systems, precision sensors and control systems.
• Isolation amplifiers - The LM2904 can be used in isolation amplifiers to reduce noise and crosstalk, while also providing a high common-mode rejection ratio.
• Buffer amps - The LM2904’s adjustable gain range can be used in buffer amplifiers to provide a low-distortion direct-coupled amplifier system.

Working Principle

The LM2904 is a dual operational amplifier (op-amp) that operates by amplifying the difference between two input signals. It has a pair of inputs (pins 1 and 2) and two outputs (pins 3 and 4). The op-amp works by comparing the two input signals, and amplifying the difference between them to generate a single output. It operates on a single supply voltage, and is able to provide a gain of up to 10, depending on the voltage applied to the input. The LM2904 also features a high common-mode rejection ratio of up to 120dB, meaning it is suitable for isolating a signal source from noise and crosstalk. In addition, the LM2904 is thermally stable over temperature, meaning it is suitable for a range of applications where temperature stability is key.

Overall, the LM2904 is an ideal choice for a range of linear, instrumental and control applications. Its ability to provide a power output of up to 2 watts, combined with its adjustable gain range, make it suitable for a variety of applications. It is also thermally stable over temperature, meaning it is reliable and suitable for a range of applications.

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