THS4531A_16 Datasheet, PDF (14/59 Pages) Texas Instruments – Ultra Low-Power, Rail-to-Rail Output, Fully Differential Amplifier

THS4531A
SLOS823C – DECEMBER 2012 – REVISED JANUARY 2016
Typical Characteristics: V_S = 2.7 V (continued)
−10
V_S = 2.7 V
−20 _{G = 1 V/V}
R_F = 2 kΩ
−30 _{RL = 2 kΩ}
V_OUT = 2 V_pp Envelope
−40
−50
−60
−70
−80
−90
1
Second Intermodulation
Third Intermodulation
Frequency (MHz)
10
G012
Figure 13. Two-Tone, 2^nd and 3^rd Order Intermodulation
Distortion vs Frequency
1
V_SAT High
V_SAT Low
0.8
0.6
V_S = 2.7 V
G = 2 V/V
0.4 RF = 2 kΩ
0.2
0
0.1
1
10
30
Differential Load Current (mA)
G014
Figure 15. Single-Ended Output Saturation Voltage vs
Load Current
3
0
−3 _{VS = 2.7 V, G = 1 V/V}
−6
R_F = 2 kΩ, R_L = 2 kΩ
V_OUT = 100 mV_pp
−9
−12
−15
−18
−21
100k
C_L = 0 pF, R_O = 0 Ω
C_L = 15 pF, R_O = 200 Ω
C_L = 39 pF, R_O = 100 Ω
C_L = 120 pF, R_O = 50 Ω
C_L = 470 pF, R_O = 20 Ω
C_L = 1200 pF, R_O = 12 Ω
1M
10M
Frequency (Hz)
100M
G016
Figure 17. Frequency Response vs C_LOAD
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2.5
2
1.5
1
0.5
0
50 100
V_OUT MAX
V_OUT MIN
V_S = 2.7 V
G = 2 V/V
R_F = 2 kΩ
1k
Load Resistance (Ω)
10k
G013
Figure 14. Single-Ended Output Voltage Swing vs Load
Resistance
100
V_S = 2.7 V
G = 1 V/V
R_F = 2 kΩ
10 V_OUT = 100 mV_pp
1
0.1
0.01
10k
100k
1M
Frequency (Hz)
10M
40M
G015
Figure 16. Main Amplifier Differential Output Impedance vs
Frequency
200
100
10
1
1
10
100
C_LOAD (pF)
V_S = 2.7 V
G = 1 V/V
R_F = 2 kΩ
R_L = 2 kΩ
1k 2k
G017
Figure 18. R_O vs C_LOAD
14
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