THS4521 Datasheet, PDF (21/65 Pages) Texas Instruments – VERY LOW POWER, NEGATIVE RAIL INPUT, RAIL-TO-RAIL OUTPUT, FULLY DIFFERENTIAL AMPLIFIER

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THS4521, THS4522, THS4524
SBOS458H – DECEMBER 2008 – REVISED JUNE 2015
Typical Characteristics: 5 V (continued)
At V_S+ = +5 V, V_S– = 0 V, V_OCM = open, V_OUT = 2 V_PP (differential), R_F = 1 kΩ, R_L = 1 kΩ differential, G = 1 V/V, single-ended
input, differential output, and input and output referenced to midsupply, unless otherwise noted.
-10
V_S+ = 5 V
-20 _{G = 1 V/V}
-30 ^RF ^{= 1 kW}
-40 ^{RL = 1 kW}
-50
V_OUT = 2.0 V_PP
envelope
-60
-70
Second
Intermodulation
5.0
Linear Output Voltage Range
4.5 V_OCM = 2.5 V
4.0
3.5
3.0
V_OUT max
2.5
2.0
V_OUT min
-80
1.5
-90
-100
Third
Intermodulation
-110
1
10
100
Frequency (MHz)
Figure 39. Two-Tone Intermodulation Distortion vs
Frequency
1.0
0.5
0
10
100
1k
10 k
Load Resistance (W)
Figure 40. Single-Ended Output Voltage Swing vs
Differential Load Resistance
100
5
C_L = 4.7 pF
0
R_O = 150 W
10
-5
C_L = 1000 pF
R_O = 7.15 W
1
0.1
0.01
100 k
1M
10 M
100 M
Frequency (Hz)
Figure 41. Main Amplifier Differential Output Impedance vs
Frequency
1k
-10
C_L = 100 pF
-15
R_O = 35.7 W
-20
C_L = 10 pF
R_O = 124 W
-25
100 k
1M
10 M
100 M
1G
Frequency (Hz)
Figure 42. Frequency Response vs C_LOAD R_LOAD = 1 kΩ
110
V_S+ = 5.0 V
G = 1 V/V
100
R_F = 1 kW
100
90
10
1
10
100
1000
C_LOAD (pF)
Figure 43. R_O vs C_LOAD R_LOAD = 1 kΩ
80
CMRR
70
-PSRR
60
+PSRR
50
10 k
100 k
1M
Frequency (Hz)
10 M
100 M
Figure 44. Rejection Ratio vs Frequency
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