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The SKY12347-362LF is a GaAs pHEMT six-bit broadband digital attenuator with a 0.5 dB Least Significant Bit (LSB). A Transistor-to-Transistor Logic (TTL)/CMOS-compatible, dual-mode serial or parallel interface controller is integrated into the device. The attenuator features low insertion loss, excellent attenuation accuracy, a 31.5 dB attenuation range, and high linearity performance. The SKY12347-362LF is an ideal choice for a wide variety of cellular 3G and 4G infrastructure applications. Attenuation is controlled by a Serial Peripheral Interface (SPI). Depending on the SPI sequence applied to the SDI pin, the attenuation state between the RF1 and RF2 pins can vary between a low insertion loss state or up to 31.5 dB. The D0 through D5 DC control pins determine the attenuation state if parallel mode is enabled. The device is provided in a 4 x 4 mm, 24-pin Quad Flat No-Lead (QFN) package.