參數(shù)資料
型號： XR-215ACD
廠商： EXAR CORP
元件分類： XO, clock
英文描述： Monolithic Phase-Locked Loop
中文描述： PLL FREQUENCY SYNTHESIZER, 25 MHz, PDSO16
封裝： 0.300 INCH, SOIC-16
文件頁數(shù)： 18/32頁
文件大?。?/td> 331K
代理商： XR-215ACD
XR-215A
18
Rev. 1.01
Low-Pass Filter
The low-pass filter section is formed by connecting an
external capacitor or RC network across terminals 2 and
3. The low-pass filter components can be connected
either between pins 2 and 3 or, from each pin to ground.
Typical filter configurations and corresponding filter
transfer functions are shown in Figure 15 where R
1
(6k )
is the internal impedance at pins 2 and 3. It should be
noted that the rejection of the low pass filter decreases
above 2MHz when the capacitor is tied from pin 2 to 3.
Figure 15.
2
3
R
2
C
1
Lag Lead Filter
2
C
1
3
C
1
R
2
R
2
1
= 2R
1
C
1
2
= R
2
C
1
C
1
2
3
C
1
C
1
2
3
1
= 2R
1
C
1
F(s)
=
Lag Filter
1
S
1
F(s)
=
F(s)
=
1
= R
1
C
1
F(s)
=
1 + S
2
1 + S(
1
+
2
)
1 + S
2
1 + S(
1
+
2
)
1
= R
1
C
1
2
= R
2
C
1
1
S
1
Note:
R
1
= 6k internal resistor.
The natural frequency
n
can be calculated from the VCO conversion gain K
0
, the phase comparator conversion gain
K
d
, and the low pass filter time constants
1
and
2
as follows:
2
1
K
0
· K
d
n
2
Then the damping factor can be calculated using:
n
K
0
· K
d
1
2
相關(guān)PDF資料
PDF描述
XR-215ACP Monolithic Phase-Locked Loop
XR215A Monolithic Phase-Locked Loop
XR-215A Monolithic Phase Locked Loop
XR-215 Monolithic Phase Locked Loop
XR-2207 Voltage-Controlled Oscillator
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XR-215ACP 制造商:EXAR 制造商全稱:EXAR 功能描述:Monolithic Phase Locked Loop
XR215CP 制造商:未知廠家 制造商全稱:未知廠家 功能描述:IC-PHASE LOCKED LOOP
XR-215CP 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog Phase-Locked Loop
XR-215D 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog Phase-Locked Loop
XR-215MD 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog Phase-Locked Loop
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