XR-2206
V
CC
1mF
4
Symmetry Adjust
1
5
16
25K
R
Mult.
And
Sine
B
15
14
S Closed For Sinewave
1
VCO
C
1
RC
F =
2M
6
9
Shaper
S
1
R
A
13
500
7
8
Current
Switches
2
Triangle Or
+1
R
Sine Wave Output
Square Wave
Output
1K
1
11
10 12
3
R
XR-2206
R
3
10K
50K
+
1mF
+
V
CC
10mF
V
CC
5.1K
5.1K
Figure 12. Circuit for Sine Wave Generation with Minimum Harmonic Distortion.
(R Determines Output Swing - See Figure 3)
3
V
CC
1mF
4
1
5
16
15
14
Mult.
And
Sine
C
F
F
VCO
>2V
<1V
1
6
Shaper
2
200
13
9
7
8
FSK Input
R
R
1
2
Current
Switches
2
+1
FSK Output
11
F1=1/R1C
F2=1/R2C
10 12
3
XR-2206
R
3
50K
+
1mF
+
10mF
V
CC
5.1K
5.1K
Figure 13. Sinusoidal FSK Generator
Rev. 1.03
9
EXAR [ EXAR CORPORATION ]
