DMA9640M0R Discrete Semiconductor Products

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The DMA9640M0R is a type of device in the category of transistors - bipolar (BJT) - arrays, pre-biased. This particular device is a five-channel N-channel FET array featuring pre-biased dual emitter-followers, with each FET having 150mA constant current capability. These devices are typically used in applications where multiple N-channel switches require continuous current capability, such as in high-end analog-to-digital converters.

These devices feature N-channel FETs with a maximum Vgs of - 20V and a maximum Rds of 100 mOhm. The gate drive of each of the five FETs is controlled by a built-in pre-biased dual emitter-follower circuit. This array also has a built-in overvoltage protection feature for the N-channel FETs, allowing the device to remain in a safe operating range even under large voltage excursions.

The DMA9640M0R is most commonly used in applications where multiple FETs are required to switch between dc power supplies, act as low-side switches, or even act as high-side switches. The device is also commonly used in audio and video amplifiers to adjust signal gains, as the low-current capability of the FETs makes them well-suited for these types of applications. Furthermore, the pre-biased dual-emitter follower feature allows for good gate-drive performance, allowing the FETs to switch quickly and accurately.

The working principle of the DMA9640M0R is fairly straightforward. When the input signal is supplied to the gate, it will cause the N-channel FETs to turn on or off, depending on the signal. The pre-biased dual emitter-follower then amplifies the signal, allowing for more accurate and consistent operation for the FETs. The overvoltage protection feature provides additional security against voltage excursions that may damage the device. This feature also allows the FETs to operate more reliably at higher voltages.

In conclusion, the DMA9640M0R is a type of device in the category of transistors - bipolar (BJT) - arrays, pre-biased. It is commonly used in applications that require multiple FETs with continuous current capability, such as in audio and video amplifiers, and switching between DC power supplies. The working principle of the device is based on pre-biased dual emitter-follower that amplifies the signal to the gate, allowing for consistent operation of the FETs. The overvoltage protection feature also provides additional protection for the device.

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