LX8545概述：
The LX8545 is very low loss SP4T specifically designed for high performance antenna tuning applications. All RF path performance is enhanced with ultra-low on state resistance and off state capacitance. LX8545 allows the creation of advanced tuningtopologies to maximize TRP & TIS performance in space constrained applications.
The LX8545 SP4T tuner is provided in a compact QFN 1.1mm x 1.5mm x 0.5mm package. A functional block diagram is shown in Figure 1. The pin configuration and package are shown in Figure 2. Signal pin assignments and functional pin description are provided in Table 1
LX8545特性：
Very Linear Performance
Off Ports, ‘open Type’
Two pin GPIO control Interface for standard SP4T operation
Very Small 1.1mm x 1.5mm
Very low profile, 0.5mm
Ultra-Low On-resistance, 1.0 Ω
LX8545應用：
Antenna Tuning
Band Switching
Impedance Tuning
LX8545功能框圖：
LX8545引腳配置：
LX8545引腳說明：
|
Pin# |
Name |
Details |
|
1 |
RF1 |
RF port 1. |
|
2 |
RF2 |
RF port 2. |
|
3 |
GND |
Ground |
|
4 |
VDD |
Voltages Supply |
|
5 |
CTL1 |
Control Voltage 1. |
|
6 |
CTL2 |
Control Voltage 2. |
|
7 |
GND |
Ground |
|
8 |
RF4 |
RF port 4 |
|
9 |
RF3 |
RF port 3 |
|
10 |
RFC |
RF Common port. |
LX8545應用示意圖：
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