參數(shù)資料
型號: 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
文件頁數(shù): 18/29頁
文件大?。?/td> 473K
代理商: TLC2942IDBLE
TLC2942
HIGH-PERFORMANCE DUAL PHASE-LOCKED LOOP BUILDING BLOCK
SLAS146B – NOVEMBER 1996 – REVISED JUNE 1997
25
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
The evaluation and operation schematic for the TLC2942I is shown in Figure 28.
1/2 fosc
Phase
Comparator
AGND
DGND
REF IN
DVDD
AVDD
VDD
LOGIC VDD (digital)
LOGIC GND (Digital)
SELECT
FIN –A
VCOINHIBIT
PFD INHIBIT
GND
VCO GND
VCOIN
BIAS
VCO VDD
VCO
R1
R3
C1
R2
C2
R4
R5
R6
S1
S2
S3
Divide
By
N
0.22
F
1
2
3
4
5
6
7
38
37
36
35
34
33
8
FIN –B
RBIAS resistor
VCO OUT
PFD OUT
PLL2
PLL1
Figure 28. Evaluation and Operation Schematic
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