THS4541_15 Datasheet, PDF (15/61 Pages) Texas Instruments – THS4541 Negative Rail Input, Rail-to-Rail Output, Precision, 850-MHz Fully Differential Amplifier

www.ti.com
THS4541
SLOS375A – AUGUST 2014 – REVISED SEPTEMBER 2014
Typical Characteristics: 3-V Single Supply (continued)
At Vs+ = 3 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).
3
0.5
2.5
4 Vpp
2 Vpp
Ro=13.7 :
Ro=0 :
2
0.5 Vpp
0.4
1.5
1
0.5
0.3
0
-0.5
0.2
-1
-1.5
-2
0.1
-2.5
-3
6 8 10 12 14 16 18 20 22 24 26 28 30
Time (ns)
D025
50-MHz input, 0.3-ns input edge rate, single-ended input to
differential output, dc coupled, see Figure 63
0
8
10 12 14 16 18 20 22 24
Time (ns)
D026
500-mV_PP output into 22-pF Cload, see Figure 71 with Vs+ = 3 V
and Vocm = 1.5 V
Figure 25. Small- and Large-Signal Step Response
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)
D027
G = 5 V/V, 50-MHz input, 0.3-ns input edge rate, single-ended
input to differential output, see Figure 61
Figure 26. Step Response into Capacitive Load
0.5
Ro=7.5 :
0.45
Ro=0 :
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)
D028
G = 5 V/V, 500-mVpp output into 22-pF Cload, see Figure 71 and
Table 6
Figure 27. Small- and Large-Signal Step Response
0.2
0.5 V step
0.15
2 V step
0.1
0.05
Figure 28. Step Response into Capacitive Load
6
Output
Input
4
2
0
0
-0.05
-2
-0.1
-4
-0.15
-0.2
0
5
10
15
20
Time  from 50% of Input Edge (ns)
D029
Simulated with 2-ns input transition time, see Figure 63
-6
0
20
40
60
80
100
Time (ns)
D030
Single-ended to differential gain of 2 (see Figure 63), > 2X input
overdrive
Figure 29. Small- and Large-Signal Step Settling Time
Figure 30. Overdrive Recovery Performance
Copyright © 2014, Texas Instruments Incorporated
Product Folder Links: THS4541
Submit Documentation Feedback
15