THS4509 Datasheet, PDF (22/42 Pages) Texas Instruments – WIDEBAND, LOW NOISE, LOW DISTORTION FULLY DIFFERENTIAL AMPLIFIER

THS4509
SLOS454H – JANUARY 2005 – REVISED NOVEMBER 2009
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TYPICAL CHARACTERISTICS: V_S+ – V_S– = 3 V (continued)
Test conditions at V_S+ = +1.5 V, V_S– = –1.5 V, CM = open, V_OD = 1 V_PP, R_F = 349 Ω, R_L = 200-Ω differential, G = 10 dB,
single-ended input, and input and output referenced to midrail, unless otherwise noted.
OUTPUT IMPEDANCE vs FREQUENCY
100
TURN-OFF TIME
1
3
2.5
0.8
10
Output
2
0.6
1.5
1
0.4
PD
1
0.2
0.5
0.1
0.1
1
10
100
f − Frequency− MHz
Figure 68.
1000
0
0
t – Time – 2 ms/div
Figure 69.
TURN-ON TIME
1.2
3
1
2.5
PD
0.8
2
0.6
1.5
Output
0.4
1
0.2
0.5
0
0
t − Time − 50 ns/div
Figure 70.
OUTPUT BALANCE ERROR vs FREQUENCY
10
0
−10
−20
−30
−40
−50
−60
0.1
1
10
100
f − Frequency − MHz
Figure 71.
1000
NOISE FIGURE vs FREQUENCY
20
19
Gain = 6 dB
18
50 - W System
17
Gain = 10 dB
16
15
Gain = 14 dB
14
13
12
11 Gain = 20 dB
10
0
50
100
150
200
f − Frequency − MHz
Figure 72.
CM INPUT IMPEDANCE vs FREQUENCY
100
10
1
0.1
0.01
0.1
1
10
100
f − Frequency − MHz
Figure 73.
1000
22
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