xr215a Exar Corporation, xr215a Datasheet - Page 21

• Manufacturer Part Number: xr215a
• Description: Monolithic Phase-locked Loop
• Manufacturer: Exar Corporation

Channel
Select
Rev. 1.01
Channel 1
F
Channel 2
F
1
2
=1MHz
=1.1MHz
0V F
-5V F
1K
o
o
=F
=F
1
2
Figure 19. Time-Multiplexing XR-215A Between Two Simultaneous FM Channels
R
6K
0.1 F
x
R
3K
0
-5V
6
11
12
10
9
V
U1
1K
EE
13
Co
Co
Phase
Comp.
VCO
220pF
14
4nF
5
2
4nF
21
3
16
+5V
1
XR-215A
R
Op
Amp
V
P
CC
10K
10K
7
300pF
300pF
0.1 F
1K
15
4
8
C
c
Coupling Capacitor
100K
3K
7.5K
10K
10nF
XR-215A
-5V
10nF
10nF
Demodulated
Output
(De-Emphasis)