THS4541 Datasheet, PDF (16/62 Pages) Texas Instruments – Fully Differential Amplifier

THS4541
SLOS375 – AUGUST 2014
www.ti.com
Typical Characteristics: 3-V Single Supply (continued)
At Vs+ = 3 V, Vs– = GND, Vocm is open, 50-Ω single-ended input to differential output, gain = 2 V/V, Rload = 500 Ω, and T_A
≈ 25°C (unless otherwise noted).
-50
HD2
-60
HD3
-70
HD2
-75
HD3
-70
-80
-80
-90
-100
-110
-85
-90
-95
-100
-105
-120
-110
-130
-115
-140
0.1
1
10
50
Frequency (kHz)
D031
2-V_PP output, see Figure 61 with Vs+ = 3.0 V, Vocm = 1.5 V
-120
0.1
1
10
Differential Output Voltage (Vpp)
D032
f = 10 MHz, see Figure 61 with Vs+ = 3.0 V, Vocm = 1.5 V
Figure 31. Harmonic Distortion Over Frequency
-60
Avg IMD3
-70
Avg IMD2
-80
-90
-100
-110
-120
-130
-140
0.1
1
10
50
Center of Two Input Test Frequencies (MHz)
D033
1 V_PP each tone, see Figure 61 with Vs+ = 3.0 V, Vocm = 1.5 V
Figure 32. Harmonic Distortion vs Output Swing
-70
HD2
HD3
-75
-80
-85
-90
-95
-100
10
100
1000
Differential Load Resistance (:)
D034
f = 10 MHz, see Figure 61 with Vs+ = 3.0 V, Vocm = 1.5 V
Figure 33. IMD2 and IM3 Over Frequency
-80
HD2
HD3
-85
-90
-95
-100
0.5
1
1.5
2
2.5
Vocm Control Voltage (V)
D035
f = 10 MHz, 2-V_PP output, see Figure 63 with Vocm adjusted
Figure 35. Harmonic Distortion vs Vocm
Figure 34. Harmonic Distortion vs Rload
-70
HD2
-75
HD3
-80
-85
-90
-95
-100
-105
1
10
Gain (V/V)
D036
f = 10 MHz, 2-V_PP output, see Figure 61 and Table 6 for gain
setting
Figure 36. Harmonic Distortion vs Gain
16
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