This post explains for the Buffer Amplifier.
The Part Number is STB7104. Marking Code is 104
The function of this semiconductor is 0.1/2.5 GHz Si MMIC Buffer Amplifier.
The package is SOT323-6L (SC70) type.
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The 104 is MMIC Buffer Amplifier. A Monolithic Microwave Integrated Circuit (MMIC) buffer amplifier is a type of amplifier that is designed to operate at microwave and millimeter-wave frequencies. MMICs are integrated circuits that are specifically engineered for high-frequency applications, typically in the microwave (300 MHz to 300 GHz) and millimeter-wave (30 GHz to 300 GHz) frequency ranges. These amplifiers are commonly used in various applications, including radar systems, satellite communications, microwave radios, and more.
The STB7102, STB7103 and STB7104 designed for Mobile Phone applications (0.1/2.5GHz), are an
high isolation Si MMIC Buffer Amplifiers. Manufactured in the third generation of ST proprietary bipolar process, they offers an excellent isolation and a good linearity using a low current consumption.
These low current amplifiers operate on 3.0 V. The STB710x family is housed in an ultra miniature package SOT323-6L surface mount package. SOT323-6L dimensions are 1.15mmx1.8mm with 0.8 mm
1. Monolithic Integration: MMICs are fabricated using semiconductor processes on a single chip, allowing for the integration of active and passive components in a compact form. This integration minimizes parasitic elements and enhances performance at high frequencies.
2. Low Noise: MMIC buffer amplifiers are designed to have low noise figures, which is crucial in applications where weak signals need to be amplified without adding significant noise.
1. UHF BUFFER AMPLIFIER for Mobile Phone Application
Other data sheets are available within the file:
STB7102, STB7103, STB7104, 102, 103