參數(shù)資料
型號: TLC2942PW
廠商: Texas Instruments, Inc.
英文描述: HIGH-PERFORMANCE DUAL PHASE-LOCKED LOOP BUILDING BLOCK
中文描述: 高效能雙鎖相環(huán)積木
文件頁數(shù): 12/28頁
文件大小: 459K
代理商: TLC2942PW
TLC2942
HIGH-PERFORMANCE DUAL PHASE-LOCKED LOOP BUILDING BLOCK
SLAS146B – NOVEMBER 1996 – REVISED JUNE 1997
12
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
tr
tf
90%
10%
90%
10%
VCO OUT1,
VCO OUT2
Figure 3. VCO Output Voltage Waveform
50%
90%
50%
10%
10%
50%
50%
tPHZ
tr
tf
tPLZ
VDD
GND
VDD
GND
VDD
GND
VDD
GND
VDD
GND
VDD
GND
FIN–A1,
FIN–A2
FIN–B1,
FIN–B2
PFD INHIBIT1,
PFD INHIBIT2
PFD OUT1,
PFD OUT2
(a) OUTPUT PULLDOWN
(see Figure 5 and Table 6)
(b) OUTPUT PULLUP
(see Figure 5 and Table 6)
FIN–A and FIN–B are for reference phase only, not for timing.
90%
tPZL
tPZH
GND
VOH
50%
50%
VDD
VOL
Figure 4. PFD Output Voltage Waveform
Table 6. PFD1 and PDF2 Output Test Conditions
PARAMETER
tPZH
tPHZ
tr
tPZL
tPLZ
tf
RL
CL
S1
S2
Open
Close
1 k
15 pF
Close
Open
S1
S2
RL
CL
Test Point
PFD OUT
DUT
VDD
Figure 5. PFD1 and PFD2 Output Test Conditions
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