Datasheet

AD9246
Rev. A | Page 11 of 44
TYPICAL PERFORMANCE CHARACTERISTICS
AVDD = 1.8 V; DRVDD = 2.5 V; maximum sample rate, DCS enabled, 1 V internal reference; 2 V p-p differential input;
AIN = −1.0 dBFS; 64k sample; T
A
= 25°C, unless otherwise noted. All figures show typical performance for all speed grades.
0
–140
0 62.500
FREQUENCY (MHz)
AMPLITUDE (dBFS)
–20
–40
–60
–80
–100
–120
15.625 31.250 46.875
125MSPS
2.3MHz @ –1dBFS
SNR = 71.9dB (72.9dBFS)
ENOB = 11.7 BITS
SFDR = 90dBc
05491-013
Figure 12. AD9246-125 Single-Tone FFT with f
IN
= 2.3 MHz
0
–140
0 62.500
FREQUENCY (MHz)
AMPLITUDE (dBFS)
–20
–40
–60
–80
–100
–120
15.625 31.250 46.875
125MSPS
30.3MHz @ –1dBFS
SNR = 71.9dBc (72.9dBFS)
ENOB = 11.6 BITS
SFDR = 88.8dBc
05491-014
Figure 13. AD9246-125 Single-Tone FFT with f
IN
= 30.3 MHz
0
–140
0 62.500
FREQUENCY (MHz)
AMPLITUDE (dBFS)
–20
–40
–60
–80
–100
–120
15.625 31.250 46.875
125MSPS
70.3MHz @ –1dBFS
SNR = 71.7dB (72.7dBFS)
ENOB = 11.5 BITS
SFDR = 85dBc
05491-015
Figure 14. AD9246-125 Single-Tone FFT with f
IN
= 70.3 MHz
0
–140
0 62.500
FREQUENCY (MHz)
AMPLITUDE (dBFS)
–20
–40
–60
–80
–100
–120
15.625 31.250 46.875
125MSPS
100.3MHz @ –1dBFS
SNR = 71.6dBc (72.6dBFS)
ENOB = 11.5 BITS
SFDR = 85dBc
05491-016
Figure 15. AD9246-125 Single-Tone FFT with f
IN
= 100.3 MHz
0
–140
0 62.500
FREQUENCY (MHz)
AMPLITUDE (dBFS)
–20
–40
–60
–80
–100
–120
15.625 31.250 46.875
125MSPS
140.3MHz @ –1dBFS
SNR = 71dB (72dBFS)
ENOB = 11.4 BITS
SFDR = 85dBc
05491-017
Figure 16. AD9246-125 Single-Tone FFT with f
IN
= 140.3 MHz
0
–140
0 62.500
FREQUENCY (MHz)
AMPLITUDE (dBFS)
–20
–40
–60
–80
–100
–120
15.625 31.250 46.875
125MSPS
170.3MHz @ –1dBFS
SNR = 70.8dB (71.8dBFS)
ENOB = 11.4 BITS
SFDR = 83.4dBc
05491-018
Figure 17. AD9246-125 Single-Tone FFT with f
IN
= 170.3 MHz