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RF2514PCBA-41X 参数 Datasheet PDF下载

RF2514PCBA-41X图片预览
型号: RF2514PCBA-41X
PDF下载: 下载PDF文件 查看货源
内容描述: VHF / UHF发送器 [VHF/UHF TRANSMITTER]
分类和应用:
文件页数/大小: 18 页 / 447 K
品牌: RFMD [ RF MICRO DEVICES ]
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RF2514  
Pin  
13  
Function  
LD FLT  
Description  
Interface Schematic  
This pin is used to set the threshold of the lock detect circuit. A shunt  
capacitor should be used to set an RC time constant with the on-chip  
series 1k resistor. The time constant should be approximately 10 times the  
reference period.  
VCC  
LD FLT  
Logic “High” input selects divide-by-64 prescaler. Logic “Low” input selects  
divide-by-32 prescaler.s  
VCC  
14  
15  
DIV CTRL  
OSC B  
DIV CTRL  
This pin is connected directly to the reference oscillator transistor base.  
The intended reference oscillator configuration is a modified Colpitts. A  
68pF capacitor should be connected between pin 15 and pin 16.  
VCC  
OSC B  
OSC E  
This pin is connected directly to the emitter of the reference oscillator tran- See pin 15.  
sistor. A 33pF capacitor should be connected from this pin to ground.  
16  
OSC E  
GND  
Exposed die flag is centered and measures 1.5mmx1.5mm  
(0.059in.x0.059in.). For best results, provide a solder pad for the flag and  
connect immediately to ground plane (see evaluation board layout). Inter-  
nally connected to pins 1 and 9.  
Die  
Flag  
This diode structure is used to provide electrostatic discharge protection to  
3kV using the Human body model. The following pins are protected: 1, 2,  
4-9, 12-14. The die flag is not protected.  
ESD  
V
C
C
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical  
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.  
Rev A5 DS040115  
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