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參數(shù)資料
| 型號： | VT98001Q |
| 廠商： | Vaishali Semiconductor |
| 英文描述： | Multifrequency Synthesizer |
| 中文描述： | 多頻合成器 |
| 文件頁數(shù)： | 3/4頁 |
| 文件大?。?/td> | 46K |
| 代理商： | VT98001Q |
VT98001
Table 2. Mode Control and Frequency Selection Table (/PD = HIGH)
(1,2)
Advance Information
2001-07-25
Page
3
MDST-0013-00
www.vaishali.com
Vaishali Semiconductor 747 Camden Avenue, Suite C Campbell CA 95008 Ph. 408.377.6060 Fax 408.377.6063
Control
(3)
Outputs
Pin 9
Mode
Pin 1
(Select 24/28MHz).
Pin 10
(24.576 MHz / 28.224 MHz)
Pin 13
(18.43 MHz / 6 MHz)
0
0
0
1
High Impedance
18.432 MHz
1
0
24.576 MHz
1
1
28.224 MHz
6 MHz
Notes:
1.
27MHz (Pins 18 &19) and 24.576 MHz (Pin 8) are active, unless /PD = LOW
2. 2 kHz standby clock is always active, independent of /PD logic state
3. 0 = Low, 1 = HIGH
Table 3. Recommended Crystal Specification
Frequency accuracy is directly proportional to the capacitive load (CL) of the crystal.
Parameter
Frequency at CL, FL
Defines the series resonant
frequency at CL
Definition
Min
Typ
27.000
Max
Units
MHz
Total accuracy: includes initial
accuracy @ 25oC, aging, and
temperature drift (25oC to 70oC)
Maximum deviation from
nominal frequency @ 25oC,
taking in to account aging,
and temperature drift
40
ppm
Load Capacitance CL
Capacitive load for nominal
frequency FL
20
pf
C1
Motional capacitance of the
crystal
TBD
pf
C0
Shunt capacitance of the
crystal
7
pf
ESR
Equivalent Series
Resistance of the crystal
40
ohms
Table 4. Operating Conditions
Parameter
Conditions
Min
3.0
Typ
3.3
Max
3.6
Units
V
Power Supply Voltage, V
DD
Input High Voltage, V
IH
2.0
V
DD
V
Input Low Voltage, V
IL
0.8
V
Operating Temperature,T
A
0
25
70
oC
Table 5. Electrical Characteristics
Parameter
Symbol
VOH
Min
2.7
Typ
Max
Units
V
Output voltage high I
OH
= -8 mA
Output voltage low I
OL
= 8 mA
VOL
0.4
V
Maximum input capacitance (X1,X2)
Cin
3
pF
Power consumption (operating)
I
dd1
mA
Power consumption (powerdown)
I
dd2
mA
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