THS4531A_16 Datasheet, PDF (12/59 Pages) Texas Instruments – Ultra Low-Power, Rail-to-Rail Output, Fully Differential Amplifier

THS4531A
SLOS823C – DECEMBER 2012 – REVISED JANUARY 2016
www.ti.com
7.7.1 Typical Characteristics: V_S = 2.7 V
Test conditions unless otherwise noted: V_S+ = 2.7 V, V_S– = 0 V, CM = open, V_OUT = 2 Vpp, R_F = 2 kΩ, R_L = 2 kΩ
Differential, G = 1 V/V, Single-Ended Input, Differential Output, Input and Output Referenced to mid-supply, T_A ≈
25°C, unless otherwise noted.
21
18
15
12
9
6
3
0
−3
−6 _{VS = 2.7 V}
−9 _{G = 1 V/V}
−12 _{RF = 2 kΩ}
−15 R_L = 2 kΩ
−18 VOUT = 100 mVpp
−21
100k
1M
10M
Frequency (Hz)
G = 1 V/V
G = 2 V/V
G = 5 V/V
G = 10 V/V
100M
G001
21
18
15
12
9
6
3
0
−3
−6 _{VS = 2.7 V}
−9 _{G = 1 V/V}
−12 _{RF = 2 kΩ}
−15 R_L = 2 kΩ
−18 VOUT = 2 Vpp
−21
100k
1M
10M
Frequency (Hz)
G = 1 V/V
G = 2 V/V
G = 5 V/V
G = 10 V/V
100M
G002
Figure 1. Small-Signal Frequency Response
1.5
V_S = 2.7 V
1
G = 1 V/V
R_F = 2 kΩ
R_L = 2 kΩ
0.5
0.5-V Step
2-V Step
0
−0.5
−1
−1.5
0
20
40
60
80
100
Time (ns)
G003
Figure 2. Large-Signal Frequency Response
400
V_S = 2.7 V
350 _{G = 2 V/V}
R_F = 2 kΩ
300 _{RL = 200 Ω}
250
200
150
100
50
0
0
0.5
1
1.5
Differential V_OUT (V)
Rising
Falling
2
2.5
G004
Figure 3. Large- and Small-Signal Pulse Response
250
V_S = 2.7 V
G = 2 V/V
200 ^{RF = 2 kΩ}
RL = 200 Ω
150
100
50
Rising
Falling
0
0
1
2
3
4
Differential V_OUT (V)
D001
Figure 4. Single-Ended Slew Rate vs V_OUT Step
2
4
V_IN
1.5
V_OUT 3
1
2
0.5
1
0
0
−0.5
−1
−1 ^{VS = 2.7 V}
−2
G = 2 V/V
−1.5 ^RF ^{= 2 kΩ}
−3
R_L = 2 kΩ
−2
−4
0 100 200 300 400 500 600 700 800 900 1000
Time (ns)
G005
Figure 5. Differential Slew Rate vs V_OUT Step
Figure 6. Overdrive Recovery
12
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