LMH6401_16 Datasheet, PDF (11/48 Pages) Texas Instruments – LMH6401 DC to 4.5 GHz, Fully-Differential, Digital Variable-Gain Amplifier

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LMH6401
SBOS730A – APRIL 2015 – REVISED MAY 2015
Typical Characteristics (continued)
At T_A = 25°C, VS– = –2.5 V, VS+ = 2.5 V, VOCM = 0 V, R_LOAD = 200-Ω differential (R_{o(internal, diff)} = 20 Ω), V_O = 2 V_PPD, and A_V
= 26 dB, unless otherwise noted. Differential input and output, and input and output pins referenced to mid-supply, unless
otherwise noted. Measured using an EVM as discussed in the Parameter Measurement Information section.
0
0
-10
-40°C
25°C
-10
-40°C
25°C
-20
85°C
-20
85°C
-30
-30
-40
-40
-50
-50
-60
-60
-70
-70
-80
-80
-90
-90
-100
-100
-110
10
100
Frequency (MHz)
1000 2000
D005
-110
10
100
Frequency (MHz)
1000 2000
D006
Figure 13. Second-Order Harmonic Distortion vs Frequency
-30
HD2
HD3
-40
-50
-60
-70
-80
-90
-6 -4 -2 0 2 4 6 8 10 12 14 16 18 20 22 24 26
Voltage Gain (dB)
D001
f = 500 MHz
Figure 15. Harmonic Distortion vs Gain Settings
-20
Gain = 26dB
-30
Gain = 14dB
Gain = 2dB
-40
-50
-60
-70
-80
-90
-45 -25
-5
15
35
55
Temperature (°C)
f = 500 MHz
75 90
D009
Figure 17. Second-Order Harmonic Distortion vs
Temperature
Figure 14. Third-Order Harmonic Distortion vs Frequency
0
HD2
-10
HD3
-20
-30
-40
-50
-60
-70
-80
-90
1
2
3
4
5
Differential Output Voltage Swing (V)
D002
f = 500 MHz
Figure 16. Harmonic Distortion vs Differential V_PP
-20
Gain = 26dB
-30
Gain = 14dB
Gain = 2dB
-40
-50
-60
-70
-80
-90
-45
-25
-5
15
35
55
Temperature (°C)
f = 500 MHz
75 90
D010
Figure 18. Third-Order Harmonic Distortion vs
Temperature
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