AD9268 Analog Devices, AD9268 Datasheet - Page 21

• Manufacturer Part Number: AD9268
• Description: 16-Bit, 125 MSPS/105 MSPS/80 MSPS, 1.8 V Dual Analog-to-Digital Converter
• Manufacturer: Analog Devices

Specifications of AD9268

• Resolution (bits): 16bit
• # Chan: 2
• Sample Rate: 125MSPS
• Interface: Par
• Analog Input Type: Diff-Uni
• Ain Range: (2Vref) p-p,1 V p-p,2 V p-p
• Adc Architecture: Pipelined
• Pkg Type: CSP

–100
–120
–140
–100
–120
–140
–100
–120
–140
–20
–40
–60
–80
–20
–40
–60
–80
–20
–40
–60
–80
Figure 33. AD9268-125 Single-Tone FFT with f
Figure 34. AD9268-125 Single-Tone FFT with f
Figure 32. AD9268-125 Single-Tone FFT with f
0
0
0
0
0
0
SECOND HARMONIC
125MSPS
30.3MHz @ –1dBFS
SNR = 77.4dB (78.4dBFS)
SFDR = 91.2dBc
125MSPS
70.1MHz @ –1dBFS
SNR = 77.2dB (78.2dBFS)
SFDR = 87.8dBc
SECOND HARMONIC
10
10
10
THIRD HARMONIC
20
20
20
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
THIRD HARMONIC
30
30
30
THIRD HARMONIC
125MSPS
2.4MHz @ –1dBFS
SNR = 77.7dB (78.7dBFS)
SFDR = 90dBc
40
40
40
SECOND HARMONIC
IN
IN
IN
= 30.3 MHz
= 70.1 MHz
= 2.4 MHz
50
50
50
60
60
60
Rev. A | Page 21 of 44
–100
–120
–140
–100
–120
–140
–100
–120
–140
Figure 35. AD9268-125 Single-Tone FFT with f
Figure 36. AD9268-125 Single-Tone FFT with f
Figure 37. AD9268-125 Single-Tone FFT with f
–20
–40
–60
–80
–20
–40
–60
–80
–20
–40
–60
–80
0
0
0
0
0
0
125MSPS
200.3MHz @ –1dBFS
SNR = 74.7dB (75.7dBFS)
SFDR = 80dBc
125MSPS
220.1MHz @ –1dBFS
SNR = 74.3dB (75.3dBFS)
SFDR = 78.5dBc
THIRD HARMONIC
10
10
10
THIRD HARMONIC
SECOND HARMONIC
20
20
20
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
SECOND HARMONIC
30
30
30
125MSPS
140.1MHz @ –1dBFS
SNR = 76.0dB (77.0dBFS)
SFDR = 84.0dBc
40
40
40
SECOND HARMONIC
THIRD HARMONIC
IN
IN
IN
= 140.1 MHz
= 200.3 MHz
= 220.1 MHz
50
50
50
AD9268
60
60
60