THS4521_10 Datasheet, PDF (13/48 Pages) Texas Instruments – VERY LOW POWER, NEGATIVE RAIL INPUT, RAIL-TO-RAIL OUTPUT, FULLY DIFFERENTIAL AMPLIFIER

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THS4521
THS4522
THS4524
SBOS458D – DECEMBER 2008 – REVISED AUGUST 2010
TYPICAL CHARACTERISTICS: V_S+ – V_S– = 3.3 V (continued)
At V_S+ = +3.3 V, V_S– = 0 V, V_OCM = open, V_OUT = 2 V_PP (differential), R_L = 1 kΩ differential, G = 1 V/V, single-ended input,
differential output, and input and output referenced to midsupply, unless otherwise noted.
HARMONIC DISTORTION vs FREQUENCY
-10 _{VS+ = 3.3 V}
-20 _{G = 1 V/V}
-30 ^RF ^{= 1 kW}
-40 ^{RL = 1 kW}
V_OUT = 2.0 V_PP
-50
-60
Third
Harmonic
Second
Harmonic
-70
HARMONIC DISTORTION
vs V_OUT AT 1 MHZ
-50
-55
V_S+ = 3.3 V
G = 1 V/V
-60 R_F = 1 kW
-65 ^{RL = 1 kW}
f = 1 MHz
-70
-75
Second
-80
Harmonic
-80
-85
-90
-100
-90
Third
-95
Harmonic
-110
1
10
Frequency (MHz)
-100
100
1
2
3
4
5
6
V_OUT (V_PP)
Figure 7.
Figure 8.
HARMONIC DISTORTION
vs GAIN AT 1 MHZ
-70
-75
Second
Harmonic
-80
-85
-90
Third
Harmonic
-95
V_S+ = 3.3 V
R_F = 1 kW
R_L = 1 kW
f = 1 MHz
-100
V_OUT = 2.0 V_PP
1 2 3 4 5 6 7 8 9 10
Gain (V/V)
Figure 9.
HARMONIC DISTORTION
vs LOAD AT 1 MHZ
-70
-75
Second
Harmonic
-80
-85
-90 ^{VS+ = 3.3 V}
G = 1 V/V
-95
R_F = 1 kW
f = 1 MHz
Third
Harmonic
V_OUT = 2.0 V_PP
-100
0 100 200 300 400 500 600
Load (W)
Figure 10.
800 900 1 k
HARMONIC DISTORTION
vs V_OCM AT 1 MHZ
-30
V_S+ = 3.3 V
-40 ^{G = 1 V/V}
R_F = 1 kW
-50 ^RL ^{= 1 kW}
f = 1 MHz
-60 ^VOUT ^{= 2.0 V}PP
-70
Second
-80
Harmonic
-90
-100
0
Third
Harmonic
0.5
1.0
1.5
2.0
2.5
3.0
V_OCM (V)
Figure 11.
TWO-TONE INTERMODULATION DISTORTION
vs FREQUENCY
-10
V_S+ = 3.3 V
-20 _{G = 1 V/V}
-30 ^RF ^{= 1 kW}
-40 ^{RL = 1 kW}
-50
V_OUT = 2.0 V_PP
envelope
-60
Second
Intermodulation
-70
Third
-80
Intermodulation
-90
-100
-110
1
10
100
Frequency (MHz)
Figure 12.
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