LMH6554_14 Datasheet, PDF (6/24 Pages) National Semiconductor (TI) – LMH6554 2.8 GHz Ultra Linear Fully Differential Amplifier

LMH6554
SNOSB30O – OCTOBER 2008 – REVISED MARCH 2013
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Typical Performance Characteristics V_S = ±2.5V
(T_A = 25°C, R_F = 200Ω, R_G = 90Ω, R_T = 76.8Ω, R_L = 200Ω, A_V = +2, for single ended in, differential out, unless specified).
Frequency Response
vs.
R_F
2
RF = 200:
1
0
-1
-2
RF = 250:
-3
-4
RF = 300:
-5
-6
-7
-8
-9
-10 ^{VOD = 0.2 VPP}
1
10
100
1000 10000
Frequency Response
vs.
Gain
2
1
AV = 1 V/V
0
-1
-2
AV = 2 V/V
-3
-4
AV = 4 V/V
-5
AV = 8 V/V
-6
-7
-8
-9
-10 ^{VOD = 0.2 VPP}
1
10
1100
1000 10000
FREQUENCY (MHz)
Figure 3.
FREQUENCY (MHz)
Figure 4.
Frequency Response
vs.
R_L
6
RL = 1k:
4
RL = 500:
2
0
-2
RL = 200:
-4
-6
-8
VOD = 0.2 VPP
-10
1
10
100
1000
FREQUENCY (MHz)
Figure 5.
10000
Frequency Response
vs.
Output Voltage (V_OD)
2
1
VOD = 0.2 VPP
0
-1
VOD = 1.6 VPP
-2
-3
-4
-5
VOD = 2 VPP
-6
-7
-8
-9
-10
1
10
100
1000 10000
FREQUENCY (MHz)
Figure 6.
Frequency Response
vs.
Capacitive Load
3
2
1
CL=2.2 pF, RO=38:
0
-1
-2 CL=6.8 pF, RO=22:
-3
-4 C_L=18 pF, R_O=14:
-5
-6 C_L=68 pF, R_O=5:
-7
-8
-9 _{VOD = 200 mVPP}
-10
1
10
100
1000 10000
FREQUENCY (MHz)
Figure 7.
Suggested R_OUT
vs.
Capacitive Load
70
LOAD = 1k: || CAP LOAD
60
50
40
30
20
10
0
5 10 15 20 25 30 35 40
CAPACITIVE LOAD (pF)
Figure 8.
6
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