參數(shù)資料
型號(hào): TLC2942IDBLE
廠商: TEXAS INSTRUMENTS INC
元件分類: PLL合成/DDS/VCOs
英文描述: PHASE LOCKED LOOP, 20 MHz, PDSO38
封裝: PLASTIC, SO-38
文件頁(yè)數(shù): 17/29頁(yè)
文件大?。?/td> 473K
代理商: TLC2942IDBLE
TLC2942
HIGH-PERFORMANCE DUAL PHASE-LOCKED LOOP BUILDING BLOCK
SLAS146B – NOVEMBER 1996 – REVISED JUNE 1997
24
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
The capacitor, C1, is usually chosen between 1
F and 0.1 F to allow for reasonable resistor values and
physical capacitor size. In this example, C1 is chosen to be 0.1
F and the corresponding R1 and R2 calculated
values are listed in Table 9.
Table 9. Calculated Values
PARAMETER
SYMBOL
VALUE
UNITS
Natural angular frequency
ωn
45000
rad/sec
K = (KV Kp)/N
3.277
Mrad/sec
Lag-lead filter
Calculated value
Nearest standard value
R1
15870
16000
Calculated value
Nearest standard value
R2
308
300
Selected value
C1
0.1
F
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