參數(shù)資料
型號(hào): XR-215ACP
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, PDIP16
封裝: 0.300 INCH, PLASTIC, DIP-16
文件頁(yè)數(shù): 26/32頁(yè)
文件大?。?/td> 331K
代理商: XR-215ACP
XR-215A
26
Rev. 1.01
Tracking Filter/Discriminator
The wide tracking range of the XR-215A allows the
system to track an input signal over a 3:1 frequency
range, centered about the VCO free running frequency.
The tracking range is maximum when the binary range-
select (pin 10) is open circuited. The circuit connections
for this application are shown in Figure 25. Typical
tracking range for a given input signal amplitude is shown
in Figure 26.Recommended values of external
components are:
1k < R
0
< 4k and 30 C
0
< C
1
< 300 C
0
where the timing
capacitor C
0
is determined by the center frequency
requirements (see Figure 8.)
16 V
CC
Figure 25. Circuit Connection For Tracking Filter Applications
+12V
0.1 F
5K
5K
U1
XR-215A
0.1 F
Signal
Input
Vs
Ro
2K
2K
0.1 F
2K
Cc
10K
VCO
Output
10K
Discriminator
Output
300pF
C
0
R
F
R
P
20K
C
1
C
1
50
50
Phase
Comp.
Op
Amp.
5
8
4
15
7
1
3
2
14
13
9
V
EE
10
12
11
6
VCO
相關(guān)PDF資料
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