RF Power Detector
Typical Operating Characteristics (continued)
(MAX2204 Evaluation Kit, typical values are at V CC = 2.85V, ENA = 2.0V, T A = +25°C, modulation equals CW, unless otherwise noted.)
2.5
2.0
1.5
1.0
0.5
0
OUTPUT VOLTAGE vs. INPUT POWER
AT 836MHz WITH RESISTIVE TAP
f = 836MHz
R = 3k ?
2.5
2.0
1.5
1.0
0.5
0
OUTPUT VOLTAGE vs. INPUT POWER
AT 1880MHz WITH RESISTIVE TAP
f = 1880MHz
R = 1.5k ?
0
5
10
15 20
25
30
0
5
10
15 20
25
30
P IN (dBm)
P IN (dBm)
RESPONSE TIME
MAX2204 toc11
ENA
1V/div
DEVIATION FROM DPCCH+1DPDCH, 1950MHz
0.6
f = 1950MHz
0.4
DPCCH+4DPDCH
V OUT
200mV/div
0.2
DPCCH+2DPDCH
DPCCH+3DPDCH
0
-0.2
-0.4
DPCCH+5DPDCH
200 μ s/div
-0.6
-25
-20
-15
-10 -5
0
5
10
P IN (dBm)
OUTPUT VOLTAGE vs. INPUT POWER
WITH WCDMA DOWNLINK
2.5
2.0
f = 2140MHz
1 DPCH
PCPCH + SCH
3 DPCH,
1.5
1.0
0.5
0
PCPCH + SCH + 1DPCH,
PCPCH + SCH + 3DPCH
-20
-15
-10
-5
0
5
10
P IN (dBm)
4
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