LMH2100 Datasheet, PDF (21/49 Pages) National Semiconductor (TI) – 50 MHz to 4 GHz 40 dB Logarithmic Power Detector for CDMA and WCDMA

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LMH2100
SNWS020C – NOVEMBER 2007 – REVISED OCTOBER 2015
Typical Characteristics (continued)
Unless otherwise specified, V_DD = 2.7 V, T_A = 25°C, measured on a limited number of samples.
20
-40°C
20
-40°C
15
15
10
10
5
5
0
0
-5
-5
-10
85°C
-15
-20
-55 -45 -35 -25 -15 -5 5
RF INPUT POWER (dBm)
-10
-15
85°C
-20
-55 -45 -35 -25 -15 -5 5
RF INPUT POWER (dBm)
Figure 59. Temperature Sensitivity (Mean ±3 sigma) vs
RF Input Power at 3500 MHz
2.0
2.5
CW
1.8
2.0
1.6
IS-95
1.5
2.0
WCDMA 64 CH
2.5
11.4.8
21..00
1.6
11.2.4
CW
1.5
10..05
1.2
0.5
11.0.0
00..00
0.8
-0.5
00.8.6
0.4
---011...505
000.6..20
---122...005
0.4
-1.5
IS-95 WCDMA 64 ch
0.2
-2.0
0.0
-55
-45 -35 -25 -15 -5
RF INPUT POWER (dBm)
-2.5
5
Figure 61. Output Voltage and Log Conformance Error vs
RF Input Power for Various Modulation Types at 900 MHz
100
75
R
50
25
0
-25
X
-50
-75
-100
10M
100M
1G
10G
FREQUENCY (Hz)
Figure 60. Temperature Sensitivity (mean ±3 sigma) vs.
RF Input Power at 4000 MHz
2.0
2.5
1.8
CW
2.0
1.6
IS-95
1.5
2.0
11.4.8
WCDMA 64 CH
2.5
21..00
1.6
1.5
11.2.4
10..05
1.2
11.0.0
CW
0.5
0.0
0.8
-0.5
00.8.6
--01.50
0.4
-1.5
00.6.2
--12..00
0.0
0.4
WCDMA 64 ch
-2.5
-1.5
IS-95
0.2
-2.0
0.0
-2.5
-55 -45 -35 -25 -15 -5 5
RF INPUT POWER (dBm)
Figure 62. Output Voltage and Log Conformance Error vs
RF Input Power for Various Modulation Types at 1855 MHz
10
9
8
7
6
5
4
3
2
1
0
10
100
1k
10k 100k 1M
FREQUENCY (Hz)
Figure 63. RF Input Impedance vs
Frequency (Resistance and Reactance)
Figure 64. Output Noise Spectrum vs Frequency
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