LMH6515 Datasheet, PDF (11/31 Pages) National Semiconductor (TI) – 600 MHz, Digital Controlled, Variable Gain Amplifier

LMH6515
www.ti.com
SNOSAX4C – AUGUST 2007 – REVISED MARCH 2013
TYPICAL PERFORMANCE CHARACTERISTICS
Maximum Gain vs. Supply Voltage^{VCC = 5V (continued)}
Gain vs. External Load
26
20
36
25.8
19.8
25.6
19.6
LOW GAIN MODE, R_L = 100:
25.4
19.4
25.2
19.2
400: INTERNAL WITH 400:
EXTERNAL = 26 dB NET
32
28
INTERNAL LOAD
= 400:
25
19
HIGH GAIN MODE, R_L = 200:
24.8
18.8
24.6
18.6
24
INTERNAL LOAD =
200:
20
24.4
24.2 ^{PIN = -24 dBm}
f = 75 MHz
24
3.5
4
4.5
5
SUPPLY VOLTAGE (V)
Figure 20.
18.4
18.2
18
5.5
16
200: INTERNAL WITH 200:
EXTERNAL = 20 dB NET
12
10
100
1k
10k
100k
EXTERNAL DIFFERENTIAL LOAD (:)
Figure 21.
Maximum Gain Over Temperature
19.5
f = 70 MHz
19
f = 150 MHz
18.5
f = 250 MHz
18
f = 450 MHz
17.5
R_L = 100:
17
-50 -25 0
25 50 75
TEMPERATURE (°C)
Figure 22.
100 125
Worst Case Gain Step Error vs. Frequency
0.5
R_L = 100:
0.45
0.4
0.35
0.3
0.25
0.2
0.15
0.1
0.05
0
0
100 200 300 400 500
FREQUENCY (MHz)
Figure 23.
Worst Case Gain Step Error vs. Frequency
1.6
R_L = 200:
1.4
1.2
1
0.8
0.6
0.4
0.2
0
0
100 200 300 400 500
FREQUENCY (MHz)
Figure 24.
Worst Case Gain Step Error Over Temperature
0.4
R_L = 100:
0.35
0.3
0.25
85°C
0.2
0.15
25°C
0.1
-40°C
0.05
0
0 50 100 150 200 250 300
FREQUENCY (MHz)
Figure 25.
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