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Evaluation Boards - Op Amps

The DC2261A-B evaluation board from Linear technology is a comprehensive assessment tool to evaluate op amps. It is one of the most popular evaluation boards for op amps from Linear technology. In this article, we will take a detailed look at the application field of the DC2261A-B evaluation board, as well as the working principle behind it.

Application Field

The DC2261A-B evaluation board is a 4th-order, single-supply, 2-channel bridge-connected, 20kHz closed-loop universal filter system. It is designed to demonstrate the performance of Linear Technology’s low-noise low-power amplifiers and can accurately measure their performances. It can be used to measure the performance of op amps in many fields such as electronic systems, power supply, automotive, industrial, and medical applications. The board is also designed to allow users to customize their applications to their specific needs. For example, users can modify the filter design, current drive, capacitor values, and other parameters.

Working Principle

The DC2261A-B evaluation board is based on the principle of cascading op amps to achieve the desired performance. It consists of four low-noise LT6658 op amps connected together in a bridge-connected configuration, allowing the op amps to act as current-mirroring technology. The output of each op amp is connected to both the input and the output of the next op amp, enabling the transfer of the op amp\'s amplifier output current to the input of the next amplifier. This circuit enables the board to achieve a stable 4th-order, single-supply, 2-channel bridge-connected, 20kHz closed-loop universal filter system. The board also features adjustable current mirrors to allow users to adjust the gain of each op amp, as well as the gain-bandwidth product of the overall filter system.

The DC2261A-B evaluation board also contains two power supplies, one for the amplifier outputs and the other for the amplification stages. The power supplies are adjustable, allowing users to tailor the power levels to their specific requirements. Additionally, the board has a temperature sensor to measure the temperature of the amplifier. This allows users to monitor the temperature of the amplifier, and adjust the amplifier power levels accordingly.

In summary, the DC2261A-B evaluation board from Linear Technology is a comprehensive, 4th-order, single-supply, 2-channel bridge-connected, 20kHz closed-loop universal filter system. It is designed to allow users to customize the filter design, current drive, capacitor values, and other parameters according to their specific requirements. Additionally, the board features adjustable power supplies and a temperature sensor to enable precise and reliable operation of the filter system.

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