LMH2832 Datasheet, PDF (12/46 Pages) Texas Instruments – LMH2832 Fully Differential, Dual, 1.1-GHz, Digital Variable-Gain Amplifier

LMH2832
SBOS709A – JULY 2016 – REVISED JULY 2016
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Typical Characteristics (continued)
at T_A = 25°C, V_S+ = 5 V, R_i = 75 Ω, R_L = 150 Ω, maximum gain (1:2-Ω ratio transformer plus 30-dB DVGA gain), f = 5 MHz to
300 MHz, V_O converted to single-ended (SE) measurement with transformer, and default current setting (unless otherwise
noted); upon power-up, gain is set to mid-range
0
-50
-10
Channel A (HD2)
Channel A (HD3)
-55
V_S = 4.5 V (HD2)
V_S = 4.5 V (HD3)
-20
Channel B (HD2)
-60
V_S = 5 V (HD2)
-30
Channel B (HD3)
V_S = 5 V (HD3)
-40
-50
-65
V_S = 5.25 V (HD2)
-70
V_S = 5.25 V (HD3)
-60
-75
-70
-80
-80
-85
-90
-100
-90
-110
-95
-120
0
50 100 150 200 250 300 350 400 450 500
Frequency (MHz)
D040
-100
-40 -20
0
20
40 60
Temperature (°C)
V_O = 2 V_PP
80 100 110
D016
Figure 19. Harmonic Distortion Between Channels
-50
-55
-60
-65
-70
-75
-80
-85
-90
-95
-100
-40 -20
V_S = 4.5 V (HD2)
V_S = 4.5 V (HD3)
V_S = 5 V (HD2)
V_S = 5 V (HD3)
V_S = 5.25 V (HD2)
V_S = 5.25 V (HD3)
0
20 40 60
Temperature (°C)
V_O = 2 V_PP
80 100 110
D017
Figure 20. Harmonic Distortion vs Temperature and
Supply Voltage (100 MHz)
-40
Gain = 30 dB
Gain = 22 dB
-50
Gain = 14 dB
Gain = 6 dB
-60
Gain = 2 dB
-70
-80
-90
-100
0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5
Differential Output Swing (V_PP)
D018
Figure 21. Harmonic Distortion vs Temperature and
Supply Voltage (200 MHz)
-40
Gain = 30 dB
Gain = 22 dB
-50
Gain = 14 dB
Gain = 6 dB
Gain = 2 dB
-60
-70
-80
Figure 22. HD2 vs Differential Output Swing (100 MHz)
-30
Gain = 30 dB
-40
Gain = 22 dB
Gain = 14 dB
Gain = 6 dB
-50
Gain = 2 dB
-60
-70
-80
-90
-90
-100
0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5
Differential Output Swing (V_PP)
D019
-100
0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5
Differential Output Swing (V_PP)
D020
Figure 23. HD3 vs Differential Output Swing (100 MHz)
Figure 24. HD2 vs Differential Output Swing (200 MHz)
12
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