THS4521 Datasheet, PDF (19/65 Pages) Texas Instruments – VERY LOW POWER, NEGATIVE RAIL INPUT, RAIL-TO-RAIL OUTPUT, FULLY DIFFERENTIAL AMPLIFIER

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THS4521, THS4522, THS4524
SBOS458H – DECEMBER 2008 – REVISED JUNE 2015
7.9 Typical Characteristics: 5 V
At V_S+ = +5 V, V_S– = 0 V, V_OCM = open, V_OUT = 2 V_PP (differential), R_F = 1 kΩ, R_L = 1 kΩ differential, G = 1 V/V, single-ended
input, differential output, and input and output referenced to midsupply, unless otherwise noted.
6
3
G = 1 V/V
0
-3
G = 2 V/V
-6
G = 5 V/V
-9
-12
G = 10 V/V
-15
-18 ^VS+ ^{= 5.0 V}
-21 ^{RL = 1 kW}
V_O = 100 mV_PP
-24
100 k
1M
10 M
100 M
1G
Frequency (Hz)
Figure 27. Small-Signal Frequency Response
1.5
V_S+ = 5 V
G = 1 V/V
1.0 _{RF = 1 kW}
R_L = 200 W
0.5
0
0.5-V Step
-0.5
2-V Step
-1.0
-1.5
0
20
40
60
80
100
Time (ns)
Figure 29. Large- and Small-Signal Pulse Response
6
3
V_OUT Diff
Input
4
2
2
1
0
0
-2
V_S+ = 5 V
-4
G = 2 V/V
R_F = 1 kW
-6 ^{RL = 200 W}
0 100 200 300 400 500 600 700 800 900
Time (ns)
Figure 31. Overdrive Recovery
-1
-2
-3
1k
6
3
G = 1 V/V
0
-3
-6
G = 5 V/V
-9
G = 2 V/V
-12
G = 10 V/V
-15
-18 ^VS+ ^{= 5.0 V}
-21 ^{RL = 1 kW}
-24 ^{VO = 2.0 VPP}
100 k
1M
10 M
100 M
1G
Frequency (Hz)
Figure 28. Large-Signal Frequency Response
800
700
600
Falling
500
Rising
400
300
200
100
0
0
-80
-90
V_S+ = 5 V
G = 1 V/V
R_F = 1 kW
R_L = 200 W
1
2
3
4
5
6
7
Differential V_OUT (V)
Figure 30. Slew Rate vs V_OUT
Second Harmonic
Third Harmonic
-100
-110
-120
-130
-140
-150
1
10
100
1000
Frequency (kHz)
D001
Figure 32. Harmonic Distortion vs Frequency Below 1 MHz
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