LMH6401_16 Datasheet, PDF (12/48 Pages) Texas Instruments – LMH6401 DC to 4.5 GHz, Fully-Differential, Digital Variable-Gain Amplifier

LMH6401
SBOS730A – APRIL 2015 – REVISED MAY 2015
www.ti.com
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.
-20
-20
Gain = 26dB
Gain = 26dB
Gain = 14dB
Gain = 14dB
-30
Gain = 2dB
-30
Gain = 2dB
-40
-40
-50
-50
-60
-60
-70
-70
-80
-45
-25
-5
15
35
55
Temperature (°C)
f = 500 MHz, (VS+) – (VS–) = 4 V
75 90
D007
Figure 19. Second-Order Harmonic Distortion vs
Temperature
0
HD2
-10
HD3
-20
-30
-40
-50
-60
-70
-80
-90
-1.5
-1
-0.5
0
0.5
1
Output Common Mode Control (V)
f = 500 MHz
1.5
D011
Figure 21. Harmonic Distortion vs
Output Common-Mode Voltage
24
4.0 V
5.0 V
22
5.25 V
20
-80
-45
-25
-5
15
35
55
Temperature (°C)
f = 500 MHz, (VS+) – (VS–) = 4 V
75 90
D008
Figure 20. Third-Order Harmonic Distortion vs
Temperature
0
HD2
-10
HD3
-20
-30
-40
-50
-60
-70
-80
-90
-1.5
-1
-0.5
0
0.5
1
Input Common Mode Control (V)
f = 500 MHz, gain = –6 dB
1.5
D012
Figure 22. Harmonic Distortion vs Input CM Voltage
24
4.0 V
5.0 V
22
5.25 V
20
18
18
16
16
14
14
12
10
100
Frequency (MHz)
1000 2000
D039
12
-45
-25
-5
15
35
55
Temperature (°C)
75 90
D040
Figure 23. Output P1dB vs Frequency
Figure 24. Output P1dB vs Temperature
12
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