DMC261040R Discrete Semiconductor Products

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The DMC261040R is a pre-biased, bipolar junction transistor (BJT) array. It is primarily used for controlling analog signals, such as to couple or buffer, and to convert a current or voltage from one range to another. The DMC261040R array combines the use of two transistors in a multi-transistor array, providing two complementary transistor outputs for switching purposes. The transistors are matched on the same chip and have similar characteristics.

Features and Benefits

• Integrated multi-transistor array with two complementary outputs.
• High-speed switching of analog signals.
• Thermal and mechanical shock protection.
• Small package with reduced number of pins.
• Breakthrough current protection.
• Low power dissipation and quiescent current.
• Wide temperature range.
• Compatibility with common logic and analog circuits.

Applications

The DMC261040R is a versatile array of two complementary transistors that can be used for various applications. Some of the most common uses include:

• Switching analog signals in audio-frequency circuits.
• Current and voltage control in motor controllers and amplifiers.
• Over-current and over-voltage protection in equipment.
• Controlling LED lighting circuits.
• Power supply control.

Working Principle

The DMC261040R array is designed to complement a single bipolar transistor. Each array element consists of two transistors, with each transistor providing one output. The array is designed so that the base-emitter voltage difference (VBE) between the two transistors is equal, while the current gain or beta ratio (β) of each transistor remains largely unchanged. The two transistors are connected in a connected-base configuration, meaning that the base of one transistor is connected directly to the collector of the other. The base current of the two transistors is controlled by one external bias.

The two transistor outputs are complementary to each other so that one transistor is conducting when the other is not. This allows for fast on/off control of the two outputs. The array can be biased in either a common-emitter or common-collector (darlington) configuration. In the common-emitter configuration, the external bias voltage applied to the array determines the collector currents of both transistors. In the common-collector configuration, the external bias voltage is used to increase or decrease the collector-emitter voltage of both transistors.

The DMC261040R is designed for use in mixed-signal applications that require fast switching of analog signals. The array provides two complementary outputs, allowing for fast switching speeds and low power dissipation. The two outputs can be used for analogue signal-buffering, conversion and control applications.

Conclusion

The DMC261040R is a versatile pre-biased, bipolar junction transistor (BJT) array that provides two complementary outputs. The array is designed for use in mixed-signal applications that require fast switching of analog signals. The array is designed to provide high-speed switching of analog signals, thermal and mechanical shock protection, low power dissipation and quiescent current, wide temperature range and compatibility with common logic and analog circuits.

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