Using a large filter capacitor used as a power supply decoupling effect, a large area of floor and played the hole, in accordance with the high-frequency circuit design, has good frequency characteristics, power supply using TI's dedicated RF chip LP5900. Rather than directly from the user input supply voltage, so that greatly reduce power fluctuations and ripple interference. PE4302 is a high linearity, 6 digital RF step attenuator, "DSA" to step 0.5 dB to 31.5 dB attenuation range frequency range from DC一4000MHz Attenuation This 50 ohm RF DSA provides. parallel and serial CMOS control interface running on a single 3-volt power supply. And maintain a high attenuation accuracy of frequency and temperature. It also has a unique control interface, allowing the user to select the initial power-up attenuation state. The PE4302 exhibits very low insertion loss and low power consumption. Name: PE4302 RF attenuator module Size: 50mm X 50mm Supply voltage range: 5V Chip Features: Attenuation: 0.5 dB -31.5 dB, Flexible parallel and serial programming interface Unique power-state selection Flexible control logic cmos High attenuation accuracy and linearity over temperature and frequency Single-supply operation 50Ω impedance Very low power consumption Packaged in a 4x4mm 20-pin QFN use Package included: 1x DC-4GHz PE4302 Digital RF Attenuator Module
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