參數(shù)資料
型號: P11997EJ2V0AN00
英文描述: uPC2757. uPC2758. and uPC8112. 3-V Power Supply. 1.9-GHz Frequency Down-converter ICs for Mobile Communication
中文描述: uPC2757。 uPC2758。和uPC8112。 3 - V單電源供電。 1.9 - GHz的頻率下,移動通信轉(zhuǎn)換器IC
文件頁數(shù): 37/51頁
文件大?。?/td> 265K
代理商: P11997EJ2V0AN00
Application Note P11997EJ2V0AN00
37
5.
SYSTEM APPLICATION EXAMPLES
The following block diagrams are system examples of these ICs, based on our customer’s actual design-in, the
system’s required characteristics, etc.
Analog cellular or cordless telephone (CT1
Digital cellular or cordless telephone (PDC, CT2, DECT, etc.):
μ
PC2758
Digital cellular or cordless mobile telephone (PHS, PDC, etc.):
μ
PC8112
The above are just examples: selections can be based on your set’s design specifications.
Figure 5-1 shows various block diagrams of these application systems.
+
, etc.):
μ
PC2757
Figure 5-1. System Block Diagrams
Example of analog cellular telephone
DEMO.
PLL
PLL
PA
÷
N
SW
TX
VCO
MOD.
FM
RX
PC2757
μ
RF
filter
IF filter
Low-noise
transistor
Example of digital cellular or cordless telephone
DEMO.
PLL
PLL
PA
÷
N
SW
TX
VCO
RX
PC2758
μ
IF filter
I
Q
I
Q
0
°
90
°
shifter
RF
filter
Low-noise
transistor
PHS
DEMO.
PLL
PLL
PA
÷
N
SW
TX
VCO
RX
PC8112
μ
IF filter
I
Q
I
Q
0
°
90
°
Phase
RF
filter
Low-noise
transistor
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