UM10473
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© NXP B.V. 2011. All rights reserved.
User manual
Rev. 01. — 29 August 2011
16 of 19
NXP Semiconductors
UM10473
OL2300 Demo board user manual
5.5 FSK
modulation
The output of OL2300, when set to FSK modulation, is measured in frequency and time
domain for FSK and Soft-FSK.
show the results.
OL2300 was set to a modulation frequency of 20 kHz using an FSK deviation of 20.3 kHz.
V
CC
= 2.7 V, AMH = 15, AML = 0, RBW = 200 kHz.
Fig 12. FSK signal in frequency and time domain, RMP = 0 > t
SF
= 0
s
aaa-000061
e f
1 0
d B
t t
2 0
d B
*
*
3DB
B
1
k
z
B
3
k
z
S
6 0 0
s
Ce n t
4 3 3 . 9 2
z
S p a n
6 0 0
k Hz
6 0
k
z /
*
1 PK
AVG
- 90
- 80
- 70
- 60
- 50
- 40
- 30
- 20
- 10
0
1 0
t t
2 0 d
*
ef
0
z
Cent
43 3. 9 2
10 μs /
AVG
I
3 00 k z
1 00 μs
1 AP
- 26 k
- 19 . 5k
- 13 k
- 6. 5k
0
6 . 5 k
1 3k
1 9. 5k
2 6k
e q u e n c y
Co u p l
De v i
+ p e a k
2 7 . 8 1
k
z
- p e a k
- 2 7 . 0 7
k
z
± p e a k / 2
2 7 . 4 4
k
z
RMS
2 0 . 3 5
k
z
Ca r
f
3 5 5 . 9 6
z
Ca r
e r
8 . 7 9
d B
o d u l
F r
1 9 . 9 6 8 7
k
z
Sa mp l
a t
2 5 0
k
z
e c o r
L e n g t
2 6
e
d
Ba n d
i
2 0 0
k
z
1
rk e r
1 [ T1 ]
- 1 6. 5221 73 8 2 8 k z
48. 0 00 0 0 0 μs
2
l t
2 [ T1 ]
3 2. 6062 58 7 8 9 k
3. 8 00 0 0 0 μs
m
e
D
a
H z
M a
B
W
W
W T
m
H
H
R
V
A
R
e r
M H
R
H
A
e r
MH z
DC
o d u l
o n S umm a ry
M
a t i
F r
i n g
a t i o n
H
H
H
H
R
e
P o w
O f s e t
H
m
H
H
H
e q u e n c y
i e r
i e r
r
r
i n g
a t i o n
d
o
m
R
D
M
TRG
A
H
H
FB
H
AQT
B
h
d th
w
