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THS4531A Datasheet, PDF (14/50 Pages) Texas Instruments – Ultra Low Power, Rail-to-Rail Output, Fully-Differential Amplifier | |||
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THS4531A
SLOS823A â DECEMBER 2012 â REVISED JANUARY 2013
www.ti.com
TYPICAL CHARACTERISTICS: VS = 2.7V (continued)
Test conditions unless otherwise noted: VS+ = 2.7 V, VSâ = 0V, CM = open, VOUT = 2Vpp, RF = 2kΩ, RL = 2kΩ Differential, G =
1V/V, Single-Ended Input, Differential Output, Input and Output Referenced to mid-supply unless otherwise noted.
â20
VS = 2.7 V
â30 G = 1 V/V
RF = 2 kâ¦
â40 RL = 2 kâ¦
â50
â60
â70
REJECTION RATIO
vs
FREQUENCY
TURN-ON TIME
3
1.5
2
1
VS = 2.7 V
G = 1 V/V
RF = 2 kâ¦
RL = 200 â¦
1
0.5
â80
â90
â100
100k
1M
Frequency (Hz)
Figure 20.
CMRR
PSRR
10M
30M
G018
Power Down
VOUT
0
0
0
200
400
600
800
1000
Time (ns)
G019
Figure 21.
INPUT-REFERRED VOLTAGE NOISE
and
TURN-OFF TIME
CURRENT NOISE SPECTRAL DENSITY
3
1.5
100
100
Power Down
VOUT
Voltage Noise
Current Noise
2
1
10
10
VS = 2.7 V
G = 1 V/V
RF = 2 kâ¦
RL = 200 â¦
1
0.5
1
1
0
0
0
10
20
30
40
50
Time (ns)
G020
Figure 22.
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
â45
â90
â135
â180
100 1k 10k 100k 1M 10M 100M
Frequency (Hz)
G022
Figure 24.
0.1
10
0.1
100
1k
10k
100k
1M
Frequency (Hz)
G021
Figure 23.
OUTPUT BALANCE ERROR
vs
â30
VS = 2.7 V
G = 1 V/V
â40 RF = 2 kâ¦
RL = 2 kâ¦
FREQUENCY
â50
â60
â70
â80
100k
1M
10M
Frequency (Hz)
Figure 25.
30M
G023
14
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