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6-bit serial-controlled digital step attenuators offer high accuracy in 0.5dB steps

6-bit serial-controlled digital step attenuators offer high accuracy in 0.5dB steps

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By eeNews Europe



They are programmed via a serial mode control interface that is both 3V and 5V compatible. They also offer a rugged Class 1C HBM ESD rating via on-chip ESD circuitry. The MCM package is footprint-compatible with most 24-pin, 4x4mm QFN packages. The RFSA2644 operates in the 50MHz to 4000MHz frequency range whilst the RFSA2654 is for use in the 5MHz to 2000MHz range, with an attenuation range of 31.5dB in 0.5dB steps and a step accuracy of +/- 0.1dB. The chips can be used in transceiver RF and IF applications including 2G, 3G, LTE, WiMax/WiFi and other wireless data terminals.

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