LMH2832 Datasheet, PDF (11/46 Pages) Texas Instruments – LMH2832 Fully Differential, Dual, 1.1-GHz, Digital Variable-Gain Amplifier

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LMH2832
SBOS709A – JULY 2016 – REVISED JULY 2016
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
50
12
f = 50 MHz
45
f = 100 MHz
11
f = 200 MHz
40
f = 300 MHz
10
35
9
30
8
25
7
20
25°C
15
6
10
5
5
-9 -6 -3 0 3 6 9 12 15 18 21 24 27 30
Voltage Gain (dB)
D011
Z_IN = 150 Ω
4
0 50 100 150 200 250 300 350 400 450 500
Frequency (MHz)
D022
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
0
Figure 13. Noise Figure vs Voltage Gain
Gain = 30 dB
Gain = 22 dB
Gain = 14 dB
Gain = 6 dB
Gain = 2 dB
Gain = -2 dB
50 100 150 200 250 300 350 400 450 500
Frequency (MHz)
D012
V_O = 2 V_PP
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
0
Figure 14. Noise Figure vs Frequency
Gain = 30 dB
Gain = 22 dB
Gain = 14 dB
Gain = 6 dB
Gain = 2 dB
Gain = -2 dB
50 100 150 200 250 300 350 400 450 500
Frequency (MHz)
D013
V_O = 2 V_PP
Figure 15. HD2 vs Frequency and Gain Settings
0
-40°C
-10
25°C
-20
90°C
105°C
-30
-40
-50
-60
-70
-80
-90
-100
0
50 100 150 200 250 300 350 400 450 500
Frequency (MHz)
D014
V_O = 2 V_PP
Figure 16. HD3 vs Frequency and Gain Settings
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
0
-40°C
25°C
90°C
105°C
50 100 150 200 250 300 350 400 450 500
Frequency (MHz)
D015
V_O = 2 V_PP
Figure 17. HD2 vs Frequency and Temperature
Figure 18. HD3 vs Frequency and Temperature
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