FMA5AT148

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FMA5AT148 is an integrated semiconductor device and is known as a Pre-Biased Bipolar Transistor Array. It is a four-element NPN transistor array with a common emitter designed specifically for use in linear amplifier circuits with high gain. It is also used as a negative output impedance source in certain types of circuits such as intercom systems and low-noise amplifiers.

The main purpose of FMA5AT148 is to provide both current and voltage gain in the signal path. It is ideal for use in audio amplifiers, RF amplifiers, and signal processing circuits. It is rated to operate over the entire range of 12 to 28 volts DC supply voltage, with a maximum current of 150 mA. The FMA5AT148 also has a gain bandwidth product of 80 MHz and a maximum operating frequency of 20MHz, making it suitable for high-frequency applications.

The FMA5AT148 is composed of four NPN transistors which are connected in parallel, configured as a common base. This allows the overall transistor array to be considerably more efficient than an equivalent circuit comprising four separate transistors connected in series. The FMA5AT148 is pre-biased for optimal performance in linear applications. This is done by connecting the base and collector terminals of the transistor array to a voltage divider which allows the array to be biased to a certain level.

The key to the FMA5AT148’s success lies in its linear transfer characteristic. This characteristic is important to ensure stable operation at high frequencies and to guard against shorting of the output stage. To further improve linearity, high input impedance is maintained by providing high current gain, while low impedance output is maintained by limiting the current gain. The FMA5AT148 also features a low output noise figure, making it suitable for use in low-noise applications.

The FMA5AT148 is an excellent choice for many high-precision applications in both industry and consumer devices. This makes it suitable for use in a variety of different products, from audio amplifiers to RF amplifiers, from intercoms to low-noise amplifiers. In short, the FMA5AT148 is a versatile and reliable integrated device, providing both current and voltage gain in a single package.

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