参数资料
型号: CRYSTAL
英文描述: Crystal Oscillators (73k)
中文描述: 晶体振荡器(73K号)
文件页数: 3/4页
文件大小: 73K
代理商: CRYSTAL
3
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HIGH-PERFORMANCE PRODUCTS
Voltage Controlled Crystal Oscillator
Revision 1/ November 27, 2001
AN1007
Figure 3: Voltage Controlled Crystal Oscillator
Y1
C1
C4
0.1
μ
F
VCC
L1
0.1
μ
F
C3
22
μ
F
+
J1
J2
R1
510
R2
510
R3
510
1
2
4
5
Qm
VCC
D
SK10/100EL16B
D*
VBB
Q
Q*
VEE
6
7
8
C2
R4
1K
C5
Varactor
0.1
μ
F
R5
510K
VR
R6
100 K
U1
3
A voltage-variable capacitance tuning diode is placed
in series with the crystal feedback path. Changing
the voltage on V
R
varies the tuning diode capaci-
tance and tunes the oscillator. The 510 K resis-
tor, R5, establishes a reference voltage for V
R
and
the 100 K resistor, R6, isolates the tuning volt-
age from the feedback loop and a 0.1 F capacitor,
C5, provides AC coupling to the tuning diode. The
center frequency is set with a trimmer capacitor,
C1. Deviation on either side of center is a function
of the crystal frequency.
相关PDF资料
PDF描述
CS-1009XD8 Voltage Reference
CS-1009XZ Voltage Reference
CS-101A
CS-102
CS-102-1
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