LMH2832 Datasheet, PDF (10/46 Pages) Texas Instruments – LMH2832 Fully Differential, Dual, 1.1-GHz, Digital Variable-Gain Amplifier

LMH2832
SBOS709A – JULY 2016 – REVISED JULY 2016
www.ti.com
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
60
60
A_v = 30 dB
Channel A
55
A_v = 22 dB
55
Channel B
A_v = 14 dB
A_v = 6 dB
50
A_v = 2 dB
50
A_v = -2 dB
45
45
40
40
35
35
30
30
25
0
2
4
6
8
10
12
14
P_OUT per tone (dBm)
D003
f = 200 MHz
Figure 7. OIP3 vs Output Power
58
V_S = 4.5 V
57
V_S = 4.75 V
V_S = 5 V
56
V_S = 5.25 V
55
54
53
52
51
50
-40 -20
0
20 40 60 80 100 110
Temperature (°C)
D006
P_OUT = 0 dBm per tone
Figure 9. OIP3 vs Temperature and Supply Voltage
(f = 200 MHz)
56
55
54
53
52
51
50
49
Bias Setting = 00h
Bias Setting = 02h
48
Bias Setting = 08h
47
Bias Setting = 20h
Bias Setting = 80h
46
-40 -20
0
20 40 60 80 100 110
Temperature (°C)
D038
P_OUT = 0 dBm per tone
Figure 11. OIP3 vs Temperature and Bias Setting
(f = 200 MHz)
25
0 50 100 150 200 250 300 350 400 450 500 550 600
Frequency (MHz)
D005
P_OUT = 0 dBm per tone
Figure 8. OIP3 Channel Comparison
46
V_S = 4.5 V
V_S = 4.75 V
45
V_S = 5 V
V_S = 5.25 V
44
43
42
41
40
-40 -20
0
20 40 60 80 100 110
Temperature (°C)
D007
P_OUT = 0 dBm per tone
Figure 10. OIP3 vs Temperature and Supply Voltage
(f = 300 MHz)
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
0
IMD2 (dBc)
IMD3 (dBc)
50 100 150 200 250 300 350 400 450 500
Frequency (MHz)
D039
P_OUT = 0 dBm per tone
Figure 12. Intermodulation Distortion vs Frequency
10
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