THS4531 Datasheet, PDF (12/55 Pages) Texas Instruments – Ultra Low Power, Rail-to-Rail Output, Fully-Differential Amplifier

THS4531
SLOS358B – SEPTEMBER 2011 – REVISED MARCH 2012
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TYPICAL CHARACTERISTICS: V_S = 2.7V (continued)
Test conditions unless otherwise noted: V_S+ = 2.7 V, V_S– = 0V, CM = open, V_OUT = 2Vpp, R_F = 2kΩ, R_L = 2kΩ Differential, G =
1V/V, Single-Ended Input, Differential Output, Input and Output Referenced to mid-supply unless otherwise noted.
10-kHz FFT ON AUDIO ANALYZER
10
0 V_S = 2.7 V
−10 _{G = 1 V/V}
−20 R_F = 2 kΩ
−30 _{RL = 100 kΩ}
−40 _{VOUT = 4 Vpp}
−50
−60
−70
−80
−90
−100
−110
−120
−130
−140
−150
0
5k
10k
15k
20k
Frequency (Hz)
Figure 8.
24k
G006
HARMONIC DISTORTION
vs
FREQUENCY
−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
Second Harmonic
Third Harmonic
10k
100k
1M
Frequency (Hz)
10M
G007
Figure 9.
HARMONIC DISTORTION
vs
OUTPUT VOLTAGE at 1 MHz
−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 10.
HARMONIC DISTORTION
vs
GAIN at 1 MHz
−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
Second Harmonic
Third Harmonic
2
4
6
Gain (V/V)
Figure 11.
8
10
G009
12
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