TS616 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'TS616' PDF : 36 Pages View PDF
Intermodulation distortion product
TS616
The following graphs show the IM2 and the IM3 of the amplifier in different configurations.
The two-tone input signal was generated by the multisource generator Marconi 2026. Each
tone has the same amplitude. The measurement was performed using a HP3585A
spectrum analyzer.
Figure 46. Intermodulation vs. output
amplitude
370 kHz & 400 kHz
AV = +1.5, Rfb = 1kΩ, VCC = ±2.5 V, RL= 14 Ω diff.
-30
-40
-50
IM2
-60
770kHz
IM3
-70
340kHz, 430kHz
-80
IM2
30kHz
-90
-100
0
IM3
1140kHz, 1170kHz
1
2
3
4
5
6
7
8
Differential Output Voltage (Vp-p)
Figure 47. Intermodulation vs. output
amplitude
370 kHz & 400 kHz
AV = +1.5, Rfb = 1kΩ, VCC = ±2.5 V, RL= 28 Ω diff.
-30
-40
-50
-60
IM3
IM2
-70
340kHz, 430kHz
30kHz
IM2
770kHz
-80
-90
-100
0
IM3
1140kHz, 1170kHz
1
2
3
4
5
6
7
8
Differential Output Voltage (Vp-p)
Figure 48. Intermodulation vs. gain
370 kHz & 400 kHz
Vout= 6 Vpp, VCC = ±2.5 V, RL= 20 Ω diff.
-30
-40
IM3
-50
340kHz, 430kHz, 1140kHz, 1170kHz
-60
IM2
30kHz
IM2
-70
770kHz
-80
-90
-100
-110
1.0
1.5
2.0
2.5
3.0
3.5
Closed Loop Gain (Linear)
Figure 49. Intermodulation vs. load
370 kHz & 400 kHz
AV = +1.5, Rfb = 1kΩ, Vout= .56 Vpp, VCC = ±2.5 V
-30
-40
IM3
-50
340kHz, 430kHz, 1140kHz, 1170kHz
-60
IM2
30kHz
IM2
-70
770kHz
-80
-90
-100
-110
4.0
0
20 40 60 80 100 120 140 160 180 200
Differential Load (Ω)
18/37
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