HMC566-SX

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The HMC566-SX is an inexpensive, low power, high linearity RF amplifier designed primarily for upstream CATV, Digital Video Broadcasting (DVB-C) applications. The amplifier is offered in a 3x3mm 24-LFCSP package with an integrated LNAs, matching networks, and protective circuitry. Its compact form factor makes it an ideal solution for a wide range of application in both consumer electronics and instrumentation applications.

The HMC566-SX is based on a dual balanced gain stage topology with a unity-gain differential input, a differential output, and differential gain control of up to 10dB. The device provides a typical gain of 15dB in a frequency range of 5-1000MHz with a S11 of typically -21.5dB. Input and output impedance of the amplifier are 75 Ω and the device has an IP3 of typically +37dBm for an input power of +5 dBm.

The amplifier has an integrated bias control circuit, which ensures the bias current is constant over temperature. The HMC566-SX also includes two RF input ports and an input power detector, which provide excellent input signal detection and allow the amplifier to attenuate up to -20dB in the event of an overload condition. The amplifier also provides an integrated circuit protection circuitry, which ensures safe operation in the event of damage due to ESD or over-voltage.

The HMC566-SX has the advantage of having a single 5V supply rail with a low current consumption of only 7mA. The low current consumption makes it suitable for portable application and it is also highly integrated, allowing an easy and straightforward integration into existing devices. Additionally, it comes with an input gain compensated output level, which eliminates the need for additional gain compensation networks and ensures an optimal RF performance in any application.

The working principle of the HMC566-SX is based on its dual balanced gain stage architecture. The amplifier uses two differential-to-single-ended gain stages to provide an input signal amplification. The first stage provides up to 15dB of gain and the second stage provides up to 10dB of gain. The gain is adjusted by applying a control voltage to the differential-to-single-ended gain stages. The signal is then passed through a low-noise pre-amplifier. The pre-amplifier’s output drives a power amplifier, providing up to 20dB of line amplification. The amplifier consumes a single 5V supply rail and provides a maximum output power of up to +37 dBm, thus making it suitable for powering CATV & satellite set-top boxes.

In summary, the HMC566-SX is an ideal solution for a wide range of RF amplifier applications due to its small size, low power consumption and high linearity. It can be used in CATV and satellite set-top boxes, digital video broadcasting (DVB-C) applications as well as portable devices, due its integrated protective circuitry. The HMC566-SX is an ideal solution for a wide range of application in both consumer electronics and instrumentation applications.

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