THS4531_15 Datasheet, PDF (13/55 Pages) Texas Instruments – Ultra Low Power, Rail-to-Rail Output, Fully-Differential Amplifier

THS4531
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SLOS358B – SEPTEMBER 2011 – REVISED MARCH 2012
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.
HARMONIC DISTORTION
vs
LOAD 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
HARMONIC DISTORTION
vs
V_OCM 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
−80
−90
0 200 400 600 800 1k 1.2k 1.4k 1.6k 1.8k 2k
0.5
1
1.5
2
Load (Ω)
G010
V_OCM (V)
G011
Figure 12.
Figure 13.
TWO-TONE, 2^nd and 3^rdORDER INTERMODULATION
DISTORTION vs FREQUENCY
−10
V_S = 2.7 V
−20 _{G = 1 V/V}
R_F = 2 kΩ
−30 _{RL = 2 kΩ}
V_OUT = 2 V_pp Envelope
−40
−50
−60
−70
−80
−90
1
Second Intermodulation
Third Intermodulation
Frequency (MHz)
10
G012
Figure 14.
SINGLE-ENDED OUTPUT VOLTAGE SWING
vs
LOAD RESISTANCE
2.5
V_OUT MAX
V_OUT MIN
2
1.5
V_S = 2.7 V
G = 2 V/V
1
R_F = 2 kΩ
0.5
0
50 100
1k
Load Resistance (Ω)
Figure 15.
10k
G013
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