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参数资料
| 型号： | TLC2943IDB |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | PLL合成/DDS/VCOs |
| 英文描述： | PHASE LOCKED LOOP, 55 MHz, PDSO38 |
| 封装： | PLASTIC, SSOP-38 |
| 文件页数： | 5/28页 |
| 文件大小： | 440K |
| 代理商： | TLC2943IDB |
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TLC2943
HIGH-PERFORMANCE DUAL PHASE-LOCKED BUILDING BLOCK
SLAS249 – NOVEMBER 1999
13
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
operating characteristics at VDD = 5 V, TA = 25°C (unless otherwise noted)
VCO section
PARAMETER
TEST CONDITIONS
MIN
NOM
MAX
UNIT
f(OSC)
Oscillation frequency
RBIAS = 2.4 k ,
VCOIN = 1/2VDD
64
80
96
MHz
t(STB)
Time to stable oscillation
See Note 10
10
s
tr
Output rise time
CL = 15 pF,
See Figure 5
2.1
5
ns
tf
Output fall time
CL = 15 pF,
See Figure 5
1.5
4
ns
f(DUTY)
Duty cycle
RBIAS = 2.4 k ,
VCOIN = 1/2VDD
45%
50%
55%
f(TA)
Temperature coefficient of oscillation
frequency
RBIAS = 2.4 k ,
Top = –20
°C to 75°C
VCOIN = 1/2VDD
0.03
%/
°C
f(VDD)
Supply voltage coefficient of oscillation
frequency supply
RBIAS = 2.4 k ,
VDD = 4.75 V to 5.25 V
VCOIN = 2.5 V,
0.02
%/mV
PFD section
PARAMETER
TEST CONDITIONS
MIN
NOM
MAX
UNIT
fMAX
Maximum operating frequency
50
MHz
tPLZ
PFD output disable time from low level
20
40
ns
tPHZ
PFD output disable time from high level
See Figure 6 and Figure 7 and Table 5
17
40
ns
tPZL
PFD output enable time to low level
See Figure 6 and Figure 7, and Table 5
3.7
10
ns
tPZH
PFD output enable time to high level
3.5
10
ns
tr
Rise time
CL =15 pF
See Figure 6
1.7
5
ns
tf
Fall time
CL = 15 pF,
See Figure 6
1.3
5
ns
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