THS4521-HT Datasheet, PDF (11/28 Pages) Texas Instruments – VERY LOW POWER, NEGATIVE RAIL INPUT, RAIL-TO-RAIL OUTPUT, FULLY DIFFERENTIAL AMPLIFIER

THS4521-HT
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SBOS548D – APRIL 2011 – REVISED MAY 2012
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. Graphs are plotted for room
temperature only and are given only for reference.
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
-80
-90
-100
-110
1
10
100
Frequency (MHz)
Figure 8.
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
-85
-90
Third
-95
Harmonic
-100
1
2
3
4
5
6
V_OUT (V_PP)
Figure 9.
HARMONIC DISTORTION
vs GAIN AT 1 MHZ
-70
-75
Second
Harmonic
-80
-85
-90
Third
Harmonic
V_S+ = 3.3 V
R_F = 1 kW
-95
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 10.
HARMONIC DISTORTION
vs LOAD AT 1 MHZ
-70
-75
Second
Harmonic
-80
-85
-90 ^{VS+ = 3.3 V}
G = 1 V/V
Third
-95
R_F = 1 kW
f = 1 MHz
Harmonic
V_OUT = 2.0 V_PP
-100
0 100 200 300 400 500 600
Load (W)
Figure 11.
800 900 1 k
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