THS4532_15 Datasheet, PDF (15/58 Pages) Texas Instruments – THS4532 Ultra Low Power, Rail-to-Rail Output, Fully-Differential Amplifier

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THS4532
SLOS829A – FEBRUARY 2013 – REVISED JULY 2015
Typical Characteristics: V_S = 2.7 V (continued)
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 = 1V/V, Single-Ended Input,
Differential Output, Input and Output Referenced to mid-supply unless otherwise noted.
−10
2.5
−20
V_OUT MAX
V_OUT MIN
−30
2
−40
1.5
−50
−60
1
−70
−80
−90
1
V_S = 2.7 V
R_L = 2 kΩ
Second Intermodulation
Third Intermodulation
Frequency (MHz)
G = 1 V/V
V_OUT = 2 V_PP
10
G012
R_F = 2 kΩ
Envelope
Figure 13. Two-Tone, 2^nd and 3^rd Order Intermodulation
Distortion vs Frequency
0.5
0
50 100
V_S = 2.7 V
1k
Load Resistance (W)
G = 2 V/V
10k
G013
R_F = 2 kΩ
Figure 14. Single-Ended Output Voltage Swing vs Load
Resistance
1
100
V_SAT High
V_SAT Low
0.8
10
0.6
1
0.4
0.1
0.2
0
0.1
V_S = 2.7 V
1
10
Differential Load Current (mA)
G = 2 V/V
30
G014
R_F = 2 kΩ
Figure 15. Single-Ended Output Saturation Voltage vs
Load Current
3
0
−3
−6
−9
−12
−15
−18
−21
100k
C_L = 0 pF, R _O = 0 W
C_L = 15 pF, R _O = 200 W
C_L = 39 pF, R _O = 100 W
C_L = 120 pF, R _O = 50 W
C_L = 470 pF, R _O = 20 W
C_L = 1200 pF, R _O = 12 W
1M
10M
Frequency (Hz)
V_S = 2.7 V
R_L = 2 kΩ
G = 1 V/V
V_OUT = 100 mV_PP
100M
G016
R_F = 2 kΩ
Figure 17. Frequency Response vs C_LOAD
0.01
10k
100k
V_S = 2.7 V
V_OUT = 100 mV_PP
1M
Frequency (Hz)
G = 1 V/V
10M 40M
G015
R_F = 2 kΩ
Figure 16. Main Amplifier Differential Output Impedance vs
Frequency
200
100
10
1
1
V_S = 2.7 V
R_L = 2 kΩ
10
100
C_LOAD (pF)
G = 1 V/V
Figure 18. R_O vs C_LOAD
1k 2k
G017
R_F = 2 kΩ
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