參數(shù)資料
型號: T2802-PLQ
廠商: ATMEL CORP
元件分類: 無繩電話/電話
英文描述: SPST to 4PST Slide DIP Switches
中文描述: TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, QCC48
封裝: 7 X 7 MM, QFN-48
文件頁數(shù): 14/29頁
文件大?。?/td> 550K
代理商: T2802-PLQ
14
T2802
4509F–DECT–10/03
Figure 3.
PLL Principle
RF_IN
Programable counter PC
"- Main counter MC
"- Swallow counter SC
f
VCO
= f
PD
x (S
MC
x 32 + S
SC
)
f
VCO
Phase frequency
detector PD
f
PD
= 3.456 MHz
Divider
by 2
PA driver
VCO
Mixer
VCO
DAC
GF_DATA
Controlled phase shifting
Modulation
compensation MCC
Gaussian
filter GF
Reference counter RC
6.912 MHz
REF_CLK
S
RC
13.824 MHz
20.736 MHz
27.648 MHz
4
6
8
1.152 Mbit/s
PLL reference
Frequency
REF_CLK
TX_DATA
Baseband controller
3
10.368 MHz
ext. loop filter
Charge
pump
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