AD9258BCPZ-80 Datasheet, PDF (19/44 Pages) Analog Devices – 14-Bit, 80 MSPS/105 MSPS/125 MSPS, 1.8 V Dual Analog-to-Digital Converter (ADC)

0
–20
–40
SECOND HARMONIC
–60
THIRD HARMONIC
–80
105MSPS
2.4MHz @ –1dBFS
SNR = 77.5dB (78.5dBFS)
SFDR = 90dBc
–100
–120
–140
0
10
20
30
40
50
FREQUENCY (MHz)
Figure 20. AD9258-105 Single-Tone FFT with fIN = 2.4 MHz
0
105MSPS
70.1MHz @ –1dBFS
–20 SNR = 76.8dB (77.8dBFS)
SFDR = 93.5dBc
–40
–60
THIRD HARMONIC
–80
SECOND
HARMONIC
–100
–120
–140
0
10
20
30
40
50
FREQUENCY (MHz)
Figure 21. AD9258-105 Single-Tone FFT with fIN = 70.1 MHz
0
105MSPS
140.1MHz @ –1dBFS
–20 SNR = 75.5dB (76.5dBFS)
SFDR = 85.0dBc
–40
SECOND HARMONIC
–60
THIRD HARMONIC
–80
–100
–120
–140
0
10
20
30
40
50
FREQUENCY (MHz)
Figure 22. AD9258-105 Single-Tone FFT with fIN = 140.1 MHz
AD9258
0
105MSPS
200.3MHz @ –1dBFS
–20
SNR = 74.0dB (75.0dBFS)
SFDR = 80dBc
–40
THIRD HARMONIC
–60
SECOND HARMONIC
–80
–100
–120
–140
0
10
20
30
40
50
FREQUENCY (MHz)
Figure 23. AD9258-105 Single-Tone FFT with fIN = 200.3 MHz
0
105MSPS
70.1MHz @ –6dBFS
–20 SNR = 72.0dB (78.0dBFS)
SFDR = 97dBc
–40
–60
THIRD HARMONIC
–80
SECOND
HARMONIC
–100
–120
–140
0
10
20
30
40
50
FREQUENCY (MHz)
Figure 24. AD9258-105 Single-Tone FFT with fIN = 70.1 MHz with Dither
Enabled
120
100
80
60
40
SNR (dBFS)
20
SFDR (dBc)
SNR (dBc)
SFDR (dBFS)
0
–100 –90 –80 –70 –60 –50 –40 –30 –20 –10 0
INPUT AMPLITUDE (dBFS)
Figure 25. AD9258-105 Single-Tone SNR/SFDR vs. Input Amplitude (AIN)
with fIN = 98.12 MHz
Rev. A | Page 19 of 44