參數(shù)資料
型號(hào)： TLC2932PW
廠商： Texas Instruments, Inc.
英文描述： HIGH-PERFORMANCE PHASE-LOCKED LOOP
中文描述： 高性能鎖相環(huán)
文件頁(yè)數(shù)： 8/24頁(yè)
文件大小： 418K
代理商： TLC2932PW
TLC2932
HIGH-PERFORMANCE PHASE-LOCKED LOOP
SLAS097E – SEPTEMBER 1994 – REVISED MAY 1997
8
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
operating characteristics over recommended operating free-air temperature range, V
DD
= 5 V
(unless otherwise noted)
VCO section
PARAMETER
TEST CONDITIONS
RBIAS = 2.2 k
, VCO IN = 1/2 VDD
Measured from VCO INHIBIT
↓
CL = 15 pF,
See Figure 3
CL = 50 pF,
See Figure 3
CL = 15 pF,
See Figure 3
CL = 50 pF,
See Figure 3
RBIAS = 2.2 k
, VCO IN = 1/2 VDD,
RBIAS = 2.2 k
, VCO IN = 1/2 VDD,
TA = –20
°
C to 75
°
C
RBIAS = 2.2 k
, VCO IN = 2.5 V,
VDD = 4.75 V to 5.25 V
RBIAS = 2.2 k
MIN
TYP
MAX
UNIT
fosc
ts(fosc)
Operating oscillation frequency
30
41
52
MHz
μ
s
Time to stable oscillation (see Note 8)
10
tr
Rise time
5.5
10
ns
8
tf
Fall time
5
10
ns
6
Duty cycle at VCO OUT
45%
50%
55%
α
(fosc)
Temperature coefficient of oscillation frequency
0.06
%/
°
C
kSVS(fosc)
Supply voltage coefficient of oscillation frequency
0.006
%/mV
Jitter absolute (see Note 9)
100
ps
NOTES:
8: The time period to the stable VCO oscillation frequency after the VCO INHIBIT terminal is changed to a low level.
9. The LPF circuit is shown in Figure 28 with calculated values listed in Table 7. Jitter performance is highly dependent on circuit layout
and external device characteristics. The jitter specification was made with a carefully designed PCB with no device socket.
PFD section
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
fmax
tPLZ
tPHZ
tPZL
tPZH
tr
tf
Maximum operating frequency
40
MHz
PFD output disable time from low level
21
40
ns
PFD output disable time from high level
See Figures 4 and 5 and Table 4
20
40
PFD output enable time to low level
7.3
20
ns
PFD output enable time to high level
6.5
20
Rise time
Fall time
CL= 15 pF
CL = 15 pF, See Figure 4
2.3
1.7
10
10
ns
ns
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