AD9257 Analog Devices, AD9257 Datasheet - Page 11

• Manufacturer Part Number: AD9257
• Description: Octal, 14-Bit, 40/65 MSPS Serial LVDS 1.8 V A/D Converter
• Manufacturer: Analog Devices

Data Sheet
TYPICAL PERFORMANCE CHARACTERISTICS
AD9257-65
Figure 7. Single-Tone 16k FFT with f
Figure 6. Single-Tone 16k FFT with f
Figure 8. Two-Tone 16k FFT with f
–105
–120
–135
–105
–120
–135
–105
–120
–135
–15
–30
–45
–60
–75
–90
–15
–30
–45
–60
–75
–90
–15
–30
–45
–60
–75
–90
0
0
0
F2 – F1
F1 + F2
3
3
3
6
6
6
9
9
9
f
SAMPLE
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
12
12
12
= 65 MSPS
15
15
15
IN1
IN
IN
= 63.5 MHz, f
= 30 MHz and f
= 9.7 MHz, f
18
18
18
65MSPS
9.7MHz AT –1dBFS
SNR = 74.7dB (75.7dBFS)
SFDR = 93.5dBc
65MSPS
63.5MHz AT –1dBFS
SNR = 73.9dB (74.9dBFS)
SFDR = 95.4dBc
21
21
21
24
24
24
SAMPLE
SAMPLE
IN2
2F2 + F1
27
27
27
2F1 + F2
2F2 – F1
2F1 – F2
= 32 MHz,
= 65 MSPS
= 65 MSPS
30
30
30
Rev. 0 | Page 11 of 40
Figure 11. Single-Tone 16k FFT with f
Figure 10. Single-Tone 16k FFT with f
Figure 9. Single-Tone 16k FFT with f
–105
–120
–135
–105
–120
–135
–105
–120
–135
–15
–30
–45
–60
–75
–90
–15
–30
–45
–60
–75
–90
–15
–30
–45
–60
–75
–90
0
0
0
65MSPS
19.7MHz AT –1dBFS
SNR = 74.7dB (75.7dBFS)
SFDR = 96.7dBc
65MSPS
30.5MHz AT –1dBFS
SNR = 74.7dB (75.7dBFS)
SFDR = 96.7dBc
3
3
3
6
6
6
9
9
9
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
12
12
12
15
15
15
IN
IN
IN
= 19.7 MHz, f
= 123.4 MHz, f
18
18
= 30.5 MHz, f
18
65MSPS
123.4MHz AT –1dBFS
SNR = 72.2dB (73.2dBFS)
SFDR = 83.0dBc
21
21
21
24
24
24
SAMPLE
SAMPLE
SAMPLE
27
27
27
= 65 MSPS
= 65 MSPS
AD9257
= 65 MSPS
30
30
30