THS4531_15 Datasheet, PDF (16/55 Pages) Texas Instruments – Ultra Low Power, Rail-to-Rail Output, Fully-Differential Amplifier

THS4531
SLOS358B – SEPTEMBER 2011 – REVISED MARCH 2012
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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.
120
110
100
90
80
70
60
50
40
30
20
10
0
10
MAIN AMPLIFIER DIFFERENTIAL
OPEN-LOOP GAIN and PHASE
vs
FREQUENCY
0
Magnitude
Phase
−45
−90
−135
−180
100 1k 10k 100k 1M 10M 100M
Frequency (Hz)
G022
Figure 24.
OUTPUT BALANCE ERROR
vs
FREQUENCY
−30
V_S = 2.7 V
G = 1 V/V
−40 RF = 2 kΩ
R_L = 2 kΩ
−50
−60
−70
−80
100k
1M
10M
Frequency (Hz)
Figure 25.
30M
G023
V_OCM SMALL-SIGNAL FREQUENCY RESPONSE
3
0
−3
−6
−9
−12 _{VS = 2.7 V}
G = 1 V/V
−15 R_F = 2 kΩ
V_OUT = 100 mV_pp
−18
100k
1M
Frequency (Hz)
10M
Figure 26.
50M
G024
V_OCM LARGE- and SMALL SIGNAL PULSE RESPONSE
2
1.8
1.6
1.4
1.2
1
0.8
0.6
0
0.2-V Step
1-V Step
100 200 300 400 500 600 700 800 900 1000
Time (ns)
G025
Figure 27.
16
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