THS4521 Datasheet, PDF (20/65 Pages) Texas Instruments – VERY LOW POWER, NEGATIVE RAIL INPUT, RAIL-TO-RAIL OUTPUT, FULLY DIFFERENTIAL AMPLIFIER

THS4521, THS4522, THS4524
SBOS458H – DECEMBER 2008 – REVISED JUNE 2015
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Typical Characteristics: 5 V (continued)
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.
10
0 ^VS+ ^{= 5.0 V}
-10 ^{G = 1 V/V}
-20 ^RF ^{= 1 kΩ}
-30 ^VOUT ^{= 8 V}PP
-40
THS4521
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
0
5 k 10 k 15 k 20 k 25 k 30 k 35 k
-10 _{VS+ = 5 V}
-20 _{G = 1 V/V}
-30 ^RF ^{= 1 kW}
-40 ^{RL = 1 kW}
V_OUT = 2.0 V_PP
-50
-60
-70
-80
-90
-100
-110
1
Third
Harmonic
Second
Harmonic
10
100
Frequency (Hz)
Frequency (MHz)
Figure 33. 10-kHz Output Spectrum On AP Analyzer at
Figure 34. Harmonic Distortion vs Frequency
V_OUT = 8 V_PP
-70
V_S+ = 5 V
G = 1 V/V
-75 _{RF = 1 kW}
R_L = 1 kW
-80 _{f = 1 MHz}
Second
Harmonic
-70
-75
Second
-80 ^Harmonic
-85
Third
Harmonic
-90
-95
-100
1
2
3
4
5
6
7
8
V_OUT (V_PP)
Figure 35. Harmonic Distortion vs V_OUT at 1 MHz
-70
-75
-80
Second
Harmonic
-85
-90 ^{VS+ = 5 V}
G = 1 V/V
-95
R_F = 1 kW
f = 1 MHz
V_OUT = 2.0 V_PP
-100
0 100 200 300 400 500 600
Third
Harmonic
800 900 1k
Load (W)
Figure 37. Harmonic Distortion vs Load at 1 MHz
-85
-90
Third
-95 Harmonic
-100
12 3
V_S+ = 5 V
R_F = 1 kW
R_L = 1 kW
f = 1 MHz
V_OUT = 2.0 V_PP
4 5 6 7 8 9 10
Gain (V/V)
Figure 36. Harmonic Distortion vs Gain at 1 MHz
-30
V_S+ = 5 V
-40 ^{G = 1 V/V}
R_F = 1 kW
-50 ^RL ^{= 1 kW}
f = 1 MHz
-60 ^VOUT ^{= 2.0 V}PP
-70
Third
-80
Harmonic
Second
Harmonic
-90
-100
0
1.0
2.0
3.0
4.0
5.0
V_OCM (V)
Figure 38. Harmonic Distortion vs V_OCM at 1 MHz
20
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