THS4531A_15 Datasheet, PDF (13/59 Pages) Texas Instruments – THS4531A Ultra Low-Power, Rail-to-Rail Output, Fully Differential Amplifier

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Typical Characteristics: V_S = 2.7 V (continued)
10
0
−10
−20
−30
−40
−50
−60
−70
−80
−90
−100
−110
−120
−130
−140
−150
0
V_S = 2.7 V
G = 1 V/V
R_F = 2 kW
R_L = 100 kΩ || 135 pF
V_OUT = 4 V_pp
5k
10k
15k
20k
24k
Frequency (Hz)
G006
Figure 7. 10-kHz FFT On Audio Analyzer
−10
Second Harmonic
−20
Third Harmonic
−30 ^VS ^{= 2.7 V}
G = 1 V/V
−40 ^{RF = 2 kΩ}
R_L = 2 kΩ
−50 ^{f = 1 MHz}
−60
−70
−80
1
2
3
4
V_OUT (V_pp)
G008
Figure 9. Harmonic Distortion vs Output Voltage at 1 MHz
0
V_S = 2.7 V
−10 _{G = 1 V/V}
R_F = 2 kΩ
−20 V_OUT = 2 V_pp
f = 1 MHz
−30
Second Harmonic
Third Harmonic
−40
−50
−60
−70
−80
0
200 400 600 800 1k 1.2k 1.4k 1.6k 1.8k 2k
Load (Ω)
G010
Figure 11. Harmonic Distortion vs Load at 1 MHz
THS4531A
SLOS823B – DECEMBER 2012 – REVISED JUNE 2015
−20
−30 ^{VS = 2.7 V}
−40
G = 1 V/V
R_F = 2 kΩ
−50 _{RL = 2 kΩ}
−60 ^VOUT ^{= 2 V}pp
−70
−80
−90
−100
−110
−120
−130
−140
1k
10k
Second Harmonic
Third Harmonic
100k
1M
Frequency (Hz)
10M
G007
Figure 8. Harmonic Distortion vs Frequency
−40
V_S = 2.7 V
−45 R_F = 2 kΩ
R_L = 2 kΩ
−50 V_OUT = 2 V_pp
f = 1 MHz
−55
−60
−65
−70
−75
−80
0
2
4
6
Gain (V/V)
Second Harmonic
Third Harmonic
8
10
G009
Figure 10. Harmonic Distortion vs Gain at 1 MHz
0
V_S = 2.7 V
−10 _{G = 1 V/V}
−20 ^{RF = 2 kΩ}
R_L = 2 kΩ
−30 ^VOUT ^{= 2 V}pp
f = 1 MHz
−40
Second Harmonic
Third Harmonic
−50
−60
−70
−80
−90
0.5
1
1.5
2
V_OCM (V)
G011
Figure 12. Harmonic Distortion vs V_OCM at 1 MHz
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