AD9261 Datasheet, PDF (11/29 Pages) Analog Devices – 16-Bit, 10 MHz Bandwidth, 30 MSPS to 160 MSPS Continuous Time Sigma-Delta ADC

AD9261
All power supplies set to 1.8 V, 640 MHz sample rate, 2 V p-p differential input, 0.5 V internal reference, PLL disabled, AIN = −2.0 dBFS,
10 MHz bandwidth, output data rate 40 MSPS, TA = 25°C, unless otherwise noted.
0
0
BANDWIDTH: 10MHz
BANDWIDTH: 10MHz
–20
DATA RATE: 40MSPS
–20
DATA RATE: 40MSPS
f_IN: 2.4MHz AT –2dBFS
f_IN1: 2.1MHz AT –8dBFS
SNR: 83.2dB
–40
SFDR: 92.6dBc
f_IN2: 2.4MHz AT –8dBFS
–40
SFDR: 91.2dBc
–60
–60
–80
–80
–100
–100
–120
–120
–140
–140
–160
0
2 4 6 8 10 12 14 16 18 20
FREQUENCY (MHz)
Figure 8. Single-Tone FFT with fIN = 2.4 MHz
–160
0 2 4 6 8 10 12 14 16 18 20
FREQUENCY (MHz)
Figure 11. Two-Tone FFT with fIN1 = 2.1 MHz and fIN2 = 2.4 MHz
0
0
BANDWIDTH: 10MHz
BANDWIDTH: 10MHz
–20
DATA RATE: 40MSPS
–20
DATA RATE: 40MSPS
f_IN: 4.2MHz AT –2dBFS
f_IN1: 3.6MHz AT –8dBFS
SNR: 83.1dB
f_IN2: 4.2MHz AT –8dBFS
–40
SFDR: 91.5dBc
–40
SFDR: 92.2dBc
–60
–60
–80
–80
–100
–100
–120
–120
–140
–140
–160
0
0
–20
–40
–60
2 4 6 8 10 12 14 16 18 20
FREQUENCY (MHz)
Figure 9. Single-Tone FFT with fIN = 4.2 MHz
BANDWIDTH: 10MHz
DATA RATE: 40MSPS
f_IN: 8.4MHz AT –2dBFS
SNR: 83dB
SFDR: 105.7dBc
–160
0 2 4 6 8 10 12 14 16 18 20
FREQUENCY (MHz)
Figure 12. Two-Tone FFT with fIN1 = 3.6 MHz and fIN2 = 4.2 MHz
0
BANDWIDTH: 10MHz
–20
DATA RATE: 40MSPS
f_IN1: 7.2MHz AT –8dBFS
f_IN2: 8.4MHz AT –8dBFS
–40
SFDR: 93dBc
–60
–80
–80
–100
–100
–120
–120
–140
–140
–160
0 2 4 6 8 10 12 14 16 18 20
FREQUENCY (MHz)
Figure 10. Single-Tone FFT with fIN = 8.4 MHz
–160
0 2 4 6 8 10 12 14 16 18 20
FREQUENCY (MHz)
Figure 13. Two-Tone FFT with fIN1 = 7.2 MHz and fIN2 = 8.4 MHz
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