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参数资料
| 型号： | TLC2942IDBR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | PLL合成/DDS/VCOs |
| 英文描述： | PHASE LOCKED LOOP, 20 MHz, PDSO38 |
| 封装： | PLASTIC, SO-38 |
| 文件页数： | 7/29页 |
| 文件大小： | 473K |
| 代理商： | TLC2942IDBR |
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TLC2942
HIGH-PERFORMANCE DUAL PHASE-LOCKED LOOP BUILDING BLOCK
SLAS146B – NOVEMBER 1996 – REVISED JUNE 1997
15
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 14
0.2
0.1
2
2.5
3.3
0.3
TEMPERATURE COEFFICIENT OF
OSCILLATION FREQUENCY
vs
BIAS RESISTOR
0.4
4
4.5
C
°
–
T
emperature
Coefficient
of
Oscillation
RBIAS – Bias Resistor – k
Frequency
–
%
/
VDD = 3 V
VCOIN = 1/2 VDD
TA = – 20°C to 75°C
3
3.5
(f
osc)
α
0
Figure 15
0.2
0.1
1.5
2.2
0.3
TEMPERATURE COEFFICIENT OF
OSCILLATION FREQUENCY
vs
BIAS RESISTOR
0.4
3.5
RBIAS – Bias Resistor – k
VDD = 5 V
VCOIN = 1/2 VDD
TA = – 20°C to 75°C
2
2.5
3
C
°
–
T
emperature
Coefficient
of
Oscillation
Frequency
–
%
/
(f
osc)
α
0
Figure 16
20
18
16
2.85
3
22
VCO OSCILLATION FREQUENCY
vs
VCO SUPPLY VOLTAGE
24
3.15
VDD – VCO Supply Voltage – V
RBIAS = 3.3 k
VCOIN = 1.5 V
TA = 25°C
–
VCO
Oscillation
Frequency
–
MHz
f osc
Figure 17
40
36
32
4.75
5
44
VCO OSCILLATION FREQUENCY
vs
VCO SUPPLY VOLTAGE
48
5.25
VDD – VCO Supply Voltage – V
RBIAS = 2.2 k
VCOIN = 1/2 VDD
TA = 25°C
–
VCO
Oscillation
Frequency
–
MHz
f osc
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