DC1287A

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The DC1287A, an operating amplifier from Linear Technology Corporation, is an ideal device for evaluation and prototyping applications and is primarily used within the Evaluation Boards – Op Amps category of products. The DC1287A has no input protection, so it is ideally suited for high speed, low impedance applications. This article will discuss the application field and working principle of the DC1287A.

Application Field

The DC1287A is designed for a wide range of applications, from audio preamplifiers and motor drivers to high-speed transimpedance amplifiers. With a bandwidth of over 1MHz, it is an excellent choice for use in high-performance audio systems. Additionally, the DC1287A is optimized for low power consumption, making it a great choice for battery-operated portable equipment.

In addition to its high performance, the DC1287A features differential inputs and outstanding common-mode rejection ratio (CMRR) of 110dB. This makes it suitable for even the most demanding systems where high dynamic range is required. The DC1287A also features excellent temperature stability, which ensures that it can be used in challenging environments.

Working Principle

The DC1287A is a dual rail-to-rail input and output operating amplifier which utilizes Linear Technology Corporation\'s patent-pending charge-balancing transconductance architecture. This architecture allows the DC1287A to operate on both single-ended and fully differential signals and achieve rail-to-rail output swing. The DC1287A also features low distortion and low noise.

The input circuitry of the DC1287A is designed to minimize power consumption while increasing dynamic range and allowing fast transient response. The inputs are also optimized for minimal distortion. The output stage consists of the charge-balancing transconductance amplifier, which provides rail-to-rail output swing and excellent transient response. The DC1287A also features a power-down feature, which ensures that the amplifier will enter a low-power state when not in use.

The DC1287A also features an internal voltage-regulator, which makes it suitable for single-supply operation. The voltage-regulator offers excellent power-supply rejection and improved common-mode rejection. Additionally, the voltage-regulator ensures that the amplifier will operate with a wide range of input voltages, making it suitable for use in automotive and other harsh environments.

In summary, the DC1287A dual rail-to-rail operating amplifier from Linear Technology Corporation offers a wide range of features and is ideal for use in high performance audio systems, automotive and other harsh environments and applications requiring rail-to-rail output swing and high dynamic range.

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