XR215A Datasheet, PDF (21/32 Pages) Exar Corporation – Monolithic Phase-Locked Loop

XR-215A
+5V
Channel 1
F₁=1MHz
Channel 2
F₂=1.1MHz
Channel
Select
1K
0V F_o=F₁
-5V F_o=F₂
0.1mF
1K
1K
0.1mF
R₀
3K
R_x
6K
U1
5
6
Phase
Comp.
11
16 V_CC
4
XR-215A
12
VCO
10
V_EE
9 13
14
2
Co 220pF
15
Op
8
Amp
31 7
300pF
10nF
3K
-5V
10K
7.5K
Demodulated
Output
-5V
100K
10nF (De-Emphasis)
R_{P 10K}
4nF 4nF
C_c Coupling Capacitor
Figure 19. Time-Multiplexing XR-215A Between Two Simultaneous FM Channels
Rev. 1.01
21