LTC1164-5CSW#TRPBF

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Introduction

LTC 1164-5CSW#TRPBF, also known as the 5CSW, is a Lowpower, Low noise, and High linearity active surface mount filtered antenna switch from Linear Technology Corporation. It is ideal for wireless applications, such as W-CDMA, TD-SCDMA, GSM, CDMA and LTE systems. The 5CSW features an integrated, optimized SPDT switch, low insertion loss and high linearity, with an off-isolation of typically 51 dB. It can handle up to 3.2 W of power, and operates from -40°C to +85°C, with a typical Rfin of 35 Ω.

Application Field

The LTC 1164-5CSW#TRPBF is designed for use in diverse wireless systems, where high linearity and low current consumption are essential. It is an ideal solution for Handset, PDS, LTE, and GSM/GPRS/EDGE applications. It can be used in Mobile Stations (MSs), Personal Digital Services (PDSs), Femto Cells, Base Stations, Mobile Network Radio Access Units (NRUs), and Base Transceiver Stations (BTSs). Its tiny form factor and low power consumption allow it to be used in both consumer electronics products and government-grade applications.

Working Principle

The LTC 1164-5CSW#TRPBF is a single-pole double throw antenna switch. It is used to switch between two antennae pathways and can help reduce interference and isolate unwanted signals. The switch uses an integrated spiral inductor and an integrated SPDT switch to provide high linearity and low insertion loss. The device features an integrated electrostatic discharge (ESD) suppressor diode to reduce electrostatic interference and discharge.

When the 5CSW is powered up, the voltage at pin 1 is set to either 0VDC or 1VDC. This sets the switch to either the “On” or “Off” position, depending on the voltage level. If the voltage is 0VDC, the switch is in the “Off” position. If the voltage is 1VDC, the switch is in the “On” position.

The switch is then activated by a voltage signal applied to the signal terminal (pin 2). If the voltage applied to pin 2 is greater than 0.8 volts, the switch is in the “On” position. If the voltage applied to pin 2 is less than 0.8 volts, the switch is in the “Off” position.

When the switch is activated, the SPDT switch connects each terminal to either the signal or the ground terminal. The signal terminal is connected to the signal path. The ground terminal is connected to the ground. The ground terminal is used to create isolation between the two pathways.

The low insertion loss of the 5CSW (typically 0.4 dB) ensures that signal power is not greatly diminished when the switch is switched between the two pathways. The high linearity of the 5CSW (typically 23 dB) ensures that no signal distortion occurs.

Conclusion

The LTC 1164-5CSW#TRPBF is a high-performance, low-power, high-linearity active surface-mount filtered antenna switch. It is ideal for diverse wireless applications, including Handset, PDS, LTE, and GSM/GPRS/EDGE applications. Its integrated SPDT switch, low insertion loss and high linearity make it an ideal solution for wireless applications.

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