RF Mixers

The SA58640DK,112 is a RF Mixer. A RF mixer is a three port active device used for the conversion of a RF signal into an Intermediate Frequency (IF), or vice versa. It is the most basic component of a frequency converter, allowing a signal to transition from one band or frequency and be translated into another. RF mixers can also be used for testing and generating signals. The SA58640DK,112 comes in a tiny 5mm x 5mm QFN-32 package and operates up to 6GHz with good linearity and low distortion.

What is a RF Mixer?

A RF mixer is a three port active device. It is the most basic component of a frequency converter, allowing a signal to transition from one band or frequency and be translated into another. RF mixers have 3 main ports; the input port, output port and local oscillator (LO) port. The LO port allows a signal of a different frequency to be used as the reference for the mixing, and the inputs and output signals are converted based on a mathematical equation of the LO frequency and the input frequency.

Mixers are used to convert a modulated signal from one frequency to another. This is done by using a LO signal at a different frequency than the signal, and combining them together to create sum and difference frequencies. The sum frequency is filtered out by a reject filter, leaving the difference frequency. This difference frequency is then amplified and forwarded to the output port.

SA58640DK,112 Application Field and Working Principle

The SA58640DK,112 is a RF mixer in the 5mm x 5mm QFN-32 package. It is developed for applications such as cellular infrastructure for macro base station, individual RF front-ends, test and measurement equipment for RF signal generation and high dynamic range for multi-level signal processing. The SA58640DK,112 can operate up to 6GHz with good linearity and low distortion.

The SA58640DK,112 mixes two signals together to create a difference frequency which is then amplified and forwarded to the output. It is built using SwitchMode pHEMT process for more efficient frequency up/down conversion, allowing better linearity and lower distortions. The device also includes gain control, leak through control to minimize interference between RF downlink and RF uplink signals and AGC control which makes the device is very easy to use in cellular infrastructure applications.

Overall, the SA58640DK,112 is designed for use in various RF applications such as cellular infrastructure for macro base stations, individual RF front-ends, and test and measurement equipment for RF signal generation and high dynamic range multi-level signal processing. Its built-in features such as gain control, leak through control and AGC control make it a very useful device for use in various applications.