LMH2120_15 Datasheet, PDF (27/34 Pages) Texas Instruments – LMH2120 6 GHz Linear RMS Power Detector with 40 dB Dynamic Range

LMH2120
www.ti.com
SNWS021C – JULY 2010 – REVISED FEBRUARY 2013
TEMPERATURE BEHAVIOR
The specified temperature range of the LMH2120 is from -40°C to 85°C. The RF detector is, to a certain extent
however, still functional outside these temperature limits. Figure 67, Figure 68, and Figure 69 show the detector
behavior for temperatures from -50°C up to 125°C in steps of 25°C. The LMH2120 is still very accurate within a
dynamic range from -35 dBm to 5 dBm. On the upper and lower end the curves deviate in a gradual way, the
lowest temperature on the bottom side and the highest temperature on top side.
10
In Steps of 25°C
125°C
1
0.1 _125°C
-50°C
0.01
-50°C
0.001
-50 -40 -30 -20 -10 0 10
RF INPUT POWER (dBm)
Figure 67. V_OUT vs. RF Input Power at 1900 MHz
3
2
-50°C
1
0
In Steps of 25°C
125°C
125°C
-1
-50°C
-2
-3
-50 -40 -30 -20 -10 0 10
RF INPUT POWER (dBm)
Figure 68. Linear Conformance Error vs. RF Input Power at 1900 MHz
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