UM10473
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© NXP B.V. 2011. All rights reserved.
User manual
Rev. 01. — 29 August 2011
11 of 19
NXP Semiconductors
UM10473
OL2300 Demo board user manual
5.3 Output
Spectrum
The most significant spurious RF outputs of the OL2300 as measured at the RF output
connector are shown in
. The spectrum analyzer is connected directly
to the evaluation board. The spectrum analyzer settings can be seen. Measurements are
made under conditions: CW, VCC = 2.7 V, AMH = 15.
5.3.1 315 MHz
Plot (1) is efficiency CASC = 0, ENRAD = 0
Plot (2) is efficiency CASC = 1, ENRAD = 1
Plot (3) is output power CASC = 0, ENRAD = 0
Plot (4) is output power CASC = 1, ENRAD = 1
Fig 5.
Output as a function of supply voltage and flags CASC and ENRAD
aaa-000054
Supply Voltage (V)
2.0
3.6
3.2
2.8
2.4
8
10
12
Output Power
(dBm)
6
20
24
28
η
(%)
16
(2)
(1)
(4)
(3)
Fig 6.
Harmonic spurious signals
B
*
3
RB
3 0 0
k
z
VB
1
S
1 1 5
s
*
1 PK
AVG
At
2 0
d B
*
Re f
1 0
d Bm
Ce n t
2 . 1
S p a n
4
4 0 0
MHz /
- 9 0
- 8 0
- 7 0
- 60
- 50
- 40
- 30
- 20
- 10
0
1 0
S
1 0 0
o f
1 0 0
1
Ma r k e r
1
[ T 1
]
1 0 . 2 5
d Bm
3 1 5 . 0 0 0 0 0 0 0 0 0
MHz
2
De l t a
2
[ T 1
]
- 5 8 . 9 1
d B
3 1 5 . 0 0 0 0 0 0 0 0 0
MHz
3
De l t a
3
[ T 1
]
- 5 4 . 1 9
d B
6 3 0 . 0 0 0 0 0 0 0 0 0
MHz
4
t
4
[ T 1
]
- 7 1 . 9 9
d B
9 4 5 . 0 0 0 0 0 0 0 0 0
aaa-000055
B
D
L
G
S
M Hz
W
W
W T
m
H
MH z
GHz
e r
W P
GHz
e l
D
a
t
