LTC5567IUF#PBF

Series:	--
Packaging:	Tube
Part Status:	Active
RF Type:	General Purpose
Frequency:	300MHz ~ 4GHz
Number of Mixers:	1
Gain:	1.9dB
Noise Figure:	14.6dB
Secondary Attributes:	Down Converter
Current - Supply:	105mA
Voltage - Supply:	3 V ~ 3.6 V
Package / Case:	16-WQFN Exposed Pad
Supplier Device Package:	16-QFN (4x4)
Base Part Number:	LTC5567

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RF mixers are an essential component in almost all consumer electronics and communication systems, providing signal conversion from one frequency to another. The LTC5567IUF#PBF RF mixer is a double-balanced, low-noise, exponential-gain Gilbert cell mixer that operates from an input frequency range of 20 MHz to 4.4 GHz. It features an ultra wide-band rejection range of -30 dBc from DC to 20 GHz and excellent gain linearity. The LTC5567IUF#PBF can be used in a variety of applications including IF sampling receivers, multi-octave support receivers, image reject receivers, video receivers, digital radios, video signal processors, medical instrumentation, cellular communication systems, radar receivers, satellite communications, and many other RF and microwave systems.

Applications

The LTC5567IUF#PBF is designed specifically for use in communication and wireless systems requiring excellent dynamic range and low distortion performance. It can be used in a range of applications such as:

• IF sampling receivers
• Multi-octave support receivers
• Image reject receivers
• Digital radios
• Video receivers
• Digital signal processors
• Medical instrumentation
• Cellular communication systems
• Radar receivers
• Satellite communication systems
• Receiver signal conditioning

The LTC5567IUF#PBF mixer can be used in communication systems that require a high dynamic range as well as low distortion performance. The mixer also features a high IP3 (third-order intercept point) and excellent gain linearity. The wide rejection range and excellent gain linearity make it an ideal choice for applications such as medium-Q IF mixing and high-Q image reject reception.

Working Principle

The LTC5567IUF#PBF RF mixer is a double-balanced, low-noise, exponential-gain Gilbert cell mixer. The working principle behind a Gilbert cell mixer is fairly simple; the RF signal to be converted is applied to the input pins, and the Gilbert cell mixer then amplifies the input signal exponentially. Through the exponential amplification process, the incoming signal is then converted to a 0 or 180 degree phase shifted version, which can then be mixed with a local oscillator signal to down-convert the frequency of the signal. The Gilbert cell mixer also amplifies the unwanted or image signal components that were present in the original input signal as well, allowing for a higher signal-to-noise ratio and therefore improved performance at lower frequencies.

Conclusion

The LTC5567IUF#PBF RF mixer is a double-balanced, low-noise, exponential-gain Gilbert cell mixer which is designed for use in communication systems requiring excellent dynamic range and low distortion performance. It is ideal for applications such as IF sampling receivers, multi-octave support receivers, image reject receivers, video receivers, digital signal processors, medical instrumentation, cellular communication systems, radar receivers, satellite communications, and many other RF and microwave systems. The mixer features an ultra-wide-band rejection range of -30 dBc from DC to 20 GHz, an IP3 of +38 dBm, and excellent gain linearity. Its working principle involves exponential amplification of the input signal, which is then converted to a 0 or 180 degree phase shifted version for mixing with a local oscillator signal.

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