LTC5549IUDB#TRMPBF

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
RF Type:	Radar
Frequency:	2GHz ~ 14GHz
Number of Mixers:	2
Gain:	--
Noise Figure:	10.4dB
Secondary Attributes:	--
Current - Supply:	115mA
Voltage - Supply:	3 V ~ 3.6 V
Package / Case:	12-VFQFN Exposed Pad
Supplier Device Package:	12-QFN (2x3)
Base Part Number:	LTC5549

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Introduction to RF Mixers
RF mixers are one of the most important components in radio frequency (RF) signal processing. They are used in a wide range of applications, including wireless communications, remote sensing, radar, and radio astronomy. The main purpose of RF mixer is to convert a signal at one frequency to a signal at a different frequency. This is achieved by mixing two signals together and making use of the nonlinear properties of a device, such as transistors or diodes. In addition, mixers can be used as frequency multipliers, band pass filters, impedance-matching network, and attenuators.LTC5549IUDB#TRMPBF Application Field and Working Principle
The LTC5549IUDB#TRMPBF is an ultra low noise integrated Double Balanced mixer capable of operating in the 0.15-20 GHz frequency range. It is designed for a wide variety of applications including telecommunication and wireless transceivers, test instrumentation, and military systems.The device is based on a double-balanced mixer topology and uses heterojunction bipolar transistors (HBTs) as the active elements. The LTC5549IUDB#TRMPBF is a double-balanced mixer which consists of two balanced Gilbert Cell multipliers, an input amplifier, and an output buffer amplifier. The input amplifier is used to drive the Gilbert Cells with two signals of opposite phases. The signals are then multiplied together in the Gilbert Cells and the output is then taken from the output amplifiers. When two signals of different frequencies are mixed together, the resultant signal will contain components of both the input signals.The LTC5549IUDB#TRMPBF is capable of providing an ultra-low noise floor with an input noise figure of 21 dB. The device is also highly linear and provides a low-distortion conversion of only -76dBc at 2 GHz. Moreover, the LTC5549IUDB#TRMPBF is capable of providing a wide gain control range to span a wide range of input power levels.Conclusion
The LTC5549IUDB#TRMPBF is an ideal solution for RF mixer applications that require wide gain ranges with ultra-low noise. It is also capable of operating over a wide frequency range, making it suitable for a variety of different applications. In addition, its highly linear performance and low distortion makes it a great choice for applications requiring precise control of the signal characteristics.

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