RF Mixers

The LT5525EUF#PBF is a high linearity and low noise RF mixer. It is part of a family of RF mixers that use double balanced Gilbert Cell technology to achieve low noise and high linearity.

The LT5525EUF#PBF is a single-pole, double-sided RF mixer that operates at frequencies ranging from DC to 18GHz. It is optimized for use in radio frequency front-end circuits and high speed wireless data link receivers. The high linearity makes it a suitable choice for applications that require low memory effects or high image-band rejection. It can be used in a variety of systems including cellular base station receivers, satellite receivers, and cable TV receivers.

The LT5525EUF#PBF has an operating range of -30dBm to -10dBm with low noise figure and excellent linearity. The input and output return losses of this mixer are typically 18 dB and 8 dB respectively. Additionally, it features high isolation, typically 20 dB, between the input and output ports. The LT5525EUF#PBF also has a low-cost microstrip implementation which provides high yield and performance.

Working Principle

The working principle of the LT5525EUF#PBF is the generation of harmonics from the input signal by mixing it with itself, and then producing a desired output. This occurs at the Gilbert cell stage, where a signal is applied to two matched transistors placed in a quarter-square configuration. Currents then flow through the input and output paths of the transistors, generating a new set of frequencies at the output. These are the desired harmonics which are later filtered for the desired output signal.

The LT5525EUF#PBF also features low power consumption and low input VSWR. It is configured as a surface mount, hermetic-sealed package, which makes it ideal for a variety of applications. The mixer also exhibits very low distortion levels and excellent linearity up to -30 dBm input. This makes it suitable for use in radio receivers operating in harsh environments, such as antenna gain measurement systems.

Application Fields

The LT5525EUF#PBF can be widely used in various application fields requiring receivers with a high linearity and low noise performance. It can be used in satellite receivers, cellular base station receivers, and cable TV receivers. It can also be used for antenna gain measurements, radio link receivers, and military communication systems. Additionally, the LT5525EUF#PBF is suitable for applications requiring direct RF downconversion such as instrumentation, radar systems, andmicrowave point-to-point links.