THS4541-Q1 Datasheet, PDF (12/60 Pages) Texas Instruments – 850-MHz Fully Differential Amplifier

THS4541-Q1
SLOS930A – NOVEMBER 2015 – REVISED NOVEMBER 2015
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5-V Single Supply (continued)
At Vs+ = 5 V, Vs– = GND, Vocm is open, 50-Ω single-ended input to differential output, gain = 2 V/V, Rload = 500 Ω, and T_A
≈ 25°C (unless otherwise noted).
2.5
0.5
4 Vpp
2
2 Vpp
Ro=17 :
Ro=0 :
1.5
0.5 Vpp
0.4
1
0.5
0.3
0
-0.5
0.2
-1
-1.5
0.1
-2
-2.5
6 8 10 12 14 16 18 20 22 24 26 28 30
Time (ns)
D007
50-MHz input, 0.3-ns input edge rate, single-ended to differential
output, DC coupled, see Figure 63
0
8
10 12 14 16 18 20 22 24
Time (ns)
D008
Av = 2 , 500-mV_PP output into 22-pF Cload, see Figure 71
Figure 7. Small- and Large-Signal Step Response
Figure 8. Step Response into Capacitive Load
2.5
4 Vpp
2
2 Vpp
1.5
0.5 Vpp
1
0.5
0
-0.5
-1
-1.5
-2
-2.5
6 8 10 12 14 16 18 20 22 24 26 28 30
Time (ns)
D009
G = 5 V/V, 50-MHz input, 0.3-ns input edge rate, single-ended
input to differential output, see Figure 63
0.5
Ro=0 :
0.45
Ro=7.5 :
0.4
0.35
0.3
0.25
0.2
0.15
0.1
0.05
0
8
10 12 14 16 18 20 22 24
Time (ns)
D010
G = 5 V/V, 500-mV_PP output into 22-pF Cload, see Figure 71
and Table 6
Figure 9. Small- and Large-Signal Step Response
Figure 10. Step Response into Capacitive Load
0.2
15
0.5 V step
0.15
2 V step
10
0.1
5
0.05
Output
Input
0
0
-0.05
-5
-0.1
-10
-0.15
-0.2
0
5
10
15
20
Time ' from 50% of Input Edge (ns)
D011
Simulated with 2-ns input transition time, see Figure 63
-15
0
20
40
60
80
100
Time (ns)
D012
Single-ended to differential gain of 2 (see Figure 63), 2x input
overdrive
Figure 11. Small- and Large-Signal Step Settling Time
Figure 12. Overdrive Recovery Performance
12
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