LT5527EUF#TRPBF

Series:	LT5527
Packaging:	Tape & Reel (TR)
Part Status:	Active
RF Type:	Cellular, GSM, MMDS, TD-SCDMA, UMTS, WCDMA
Frequency:	400MHz ~ 3.7GHz
Number of Mixers:	1
Gain:	2.3dB
Noise Figure:	12.5dB
Secondary Attributes:	Down Converter
Current - Supply:	88mA
Voltage - Supply:	4.5 V ~ 5.25 V
Package / Case:	16-WQFN Exposed Pad
Supplier Device Package:	16-QFN (4x4)
Base Part Number:	LT5527

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Introduction

LT5527EUF#TRPBF is an RF Mixers designed for high performance. It is capable of boosting signalto-noise ratio (SNR) and total harmonic distortion (THD) of the emerging fourth-generation mobile communication standard known as LTE. All of the specifications and features of the LT5527EUF#TRPBF make it an ideal choice for many of the current and next generation wireless applications.

Application Field

LT5527EUF#TRPBF is applicable to many basic wireless communication applications. For example, it is used in the advanced cellular networks of today\'s cellular phones and other mobile devices. It provides highly efficient, low power consumption, wide gain control range and high gain accuracy. It also features low noise figure, low dropout voltage, high harmonic suppression and high linearity.LT5527EUF#TRPBF is also used in surface acoustic wave devices. It is stable in a wide range of temperatures and provides good linearity, high gain accuracy and low noise figure. Other applications include RADAR, high-speed Wi-Fi networks, and satellite/terrestrial communications.

Working Principle

LT5527EUF#TRPBF is a wide-band, direct-conversion mixer which utilizes a single integrated circuit and operates on the principle of sampling. The device employs two input switches, a multiplexer and a sampling capacitor. The device also incorporates a low-noise amplifier, a band-pass filter, an output buffer amplifier and a switchable bypass capacitor to provide gain control and improve ripple rejection.In the sampling method, the input signal is applied to both switches, as well as the multiplexer. The signal is switched on and off alternately, and samples of the signal are taken by the sampling capacitor. The gain of the device is controlled by the multiplexer, which selects one or the other of the switches and applies the selected one to the sampling capacitor. The output is then demodulated and amplified by the output buffer amplifier.The advantage of the single-IC approach used in the LT5527EUF#TRPBF is that it eliminates the need for external parts such as a distinct amplifier and/or filter, as well as additional circuitry, thus reducing the device\'s size, cost and complexity. Additionally, since the use of multiplexers allows for gain control, even with small signal levels, the device is both reliable and accurate.

Conclusion

LT5527EUF#TRPBF is an RF Mixer designed to provide performance improvements for 4G mobile communication standard LTE. It is applicable in a wide range of wireless communication applications, including cellular phones, surface acoustic wave devices, RADAR, high-speed Wi-Fi networks and satellite and terrestrial communications. Its performance is improved by its single-IC, direct conversion approach which eliminates the need for extra parts and provides gain control without compromising linearity or gain accuracy. As such, the LT5527EUF#TRPBF is a suitable solution for high performance wireless communication applications.

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