TS83102G0B ATMEL Corporation, TS83102G0B Datasheet - Page 26

• Manufacturer Part Number: TS83102G0B
• Description: 10-bit 2 GSPS ADCthis State-of-the-art 10-bit 2 GSPS Converter Offers an Unprecedented Bandwidth of 3.3 GHZ And Excellent Band Flatness, Allowing to Directly Digitize Very High if Signals (2nd And 3rd Nyquist Zones) With High Linearity : The SFDR Rem
• Manufacturer: ATMEL Corporation

26
TS83102G0B
Figure 24. Dual Tone Reconstructed Signal Spectrum at Fs = 1.4 Gsps, Fin1 = 745 MHz,
Fin2 = 755 MHz (-7 dBFS), IMD3 = 65 dBFS
Note:
Figure 25. Dual Tone Reconstructed Signal Spectrum at Fs = 1.4 Gsps, Fin1 = 995 MHz,
Fin2 = 1005 MHz (-7 dBFS), IMD3 = 64 dBFS
Note:
The ADC input signal is sampled at 1.4 Gsps but the data acquisition is 8 times decimated.
Thus, the spectrum is displayed from DC to Fs/2 divided by the decimation factor
[(Fs/2)/8 = 87.5 MHz].
The ADC input signal is sampled at 1.4 Gsps but the data acquisition is 8 times decimated.
Thus, the spectrum is displayed from DC to Fs/2 divided by the decimation factor
[(Fs/2)/8 = 87.5 MHz].
-100
-110
-120
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
0
0
0
F1 - F2 = 10 MHz
F1 - F2 = 10 MHz
-78 dBFS
5
-70 dBFS
5
10
10
F2 = 6 x (Fs/8) - Fin2 = 45 MHz
15
F1 = -4 x (Fs/8) + Fin1 = 45 MHz
15
2F2 + F1 = 20 MHz
2F2 + F1 = 20 MHz
20
-70 dBFS
20
-7 dBFS
-72 dBFS
25
25
-7 dBFS
2F2 - F1 = 35 MHz
30
30
2F1 - F2 = 35 MHz
-64 dBFS
-68 dBFS
35
35
Fs/8 (MHz)
40
40
MHz
45
45
IMD3
IMD3
50
50
55
55
F1 = 6 x (Fs/8) - Fin1 = 55 MHz
2F1 - F2 = 65 MHz
60
2F2 - F1 = 65 MHz
F2 = - 4 x (Fs/8) + Fin2 = 55 MHz
60
-65 dB
-65 dBFS
65
65
-7 dBFS
70
F1 + F2 = 75 MHz
-7 dBFS
70
75
-62 dBFS
F1 + F2 = 75 MHz
75
80
-68 dBFS
80
85
= Fs/16
85
87.5
= Fs/16
2101C–BDC–02/04
87.5