THS4531A Datasheet, PDF (18/51 Pages) Texas Instruments – Ultra Low Power, Rail-to-Rail Output, Fully-Differential Amplifier

THS4531A
SLOS823A – DECEMBER 2012 – REVISED JANUARY 2013
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TYPICAL CHARACTERISTICS: V_S = 5V (continued)
Test conditions unless otherwise noted: V_S+ = 5 V, V_S– = 0V, V_OCM = 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, T_A = 25°Cunless otherwise noted.
HARMONIC DISTORTION
vs
10-kHz FFT ON AUDIO ANALYZER
10
0 V_S = 5 V
−10 _{G = 1 V/V}
−20 R_F = 2 kΩ
−30 _{RL = 100 kΩ}
−40 _{VOUT = 8 Vpp}
−50
−60
−70
−80
−90
−100
−110
−120
−130
−140
−150
0
5k
10k
15k
20k
24k
−20
−30 ^{VS = 5 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
FREQUENCY
100k
Second Harmonic
Third Harmonic
1M
10M
Frequency (Hz)
G032
Frequency (Hz)
G033
Figure 41.
Figure 42.
HARMONIC DISTORTION
vs
OUTPUT VOLTAGE at 1 MHz
−30
V_S = 5 V
Second Harmonic
G = 1 V/V
Third Harmonic
−40 RF = 2 kΩ
R_L = 2 kΩ
f = 1 MHz
−50
−60
−70
−80
1
2
3
4
5
6
7
8
V_OUT (V_pp)
G034
Figure 43.
HARMONIC DISTORTION
vs
−40
V_S = 5 V
−45 R_F = 2 kΩ
R_L = 2 kΩ
−50 V_OUT = 2 V_pp
GAIN at 1 MHz
f = 1 MHz
−55
−60
−65
−70
−75
−80
0
Second Harmonic
Third Harmonic
2
4
6
Gain (V/V)
Figure 44.
8
10
G035
HARMONIC DISTORTION
vs
0
V_S = 5 V
−10 _{G = 1 V/V}
R_F = 2 kΩ
−20 V_OUT = 2 V_pp
LOAD at 1 MHz
Second Harmonic
Third Harmonic
f = 1 MHz
−30
−40
−50
−60
−70
−80
0
200 400 600 800 1k 1.2k 1.4k 1.6k 1.8k 2k
Load (Ω)
G036
Figure 45.
HARMONIC DISTORTION
vs
0
V_S = 5 V
−10 _{G = 1 V/V}
−20 ^{RF = 2 kΩ}
R_L = 2 kΩ
−30 ^VOUT ^{= 2 V}pp
V_OCM at 1 MHz
Second Harminc
Third Harmonic
f = 1 MHz
−40
−50
−60
−70
−80
−90
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
V_OCM (V)
G037
Figure 46.
18
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