Datasheet

AD9634
Rev. 0 | Page 17 of 32
–90.0 –81.7 –73.4 –65.1 –56.8 –48.5 –40.2 –31.9 –23.6 –15.3 –7.0
0
–20
–40
–60
–80
–100
–120
SFDR/IMD3 (dBc and dBFS)
INPUT AMPLITUDE (dBFS)
SFDR (dBc)
SFDR (dBFS)
IMD3 (dBc)
IMD3 (dBFS)
09996-031
Figure 34. AD9634-250 Two-Tone SFDR/IMD3 vs. Input Amplitude (A
IN
) with
f
IN1
= 89.12 MHz, f
IN2
= 92.12 MHz, f
S
= 250 MSPS
–90.0 –81.7 –73.4 –65.1 –56.8 –48.5 –40.2 –31.9 –23.6 –15.3 –7.0
0
–20
–40
–60
–80
–100
–120
SFDR/IMD3 (dBc and dBFS)
INPUT AMPLITUDE (dBFS)
SFDR (dBc)
SFDR (dBFS)
IMD3 (dBc)
IMD3 (dBFS)
09996-032
Figure 35. AD9634-250 Two-Tone SFDR/IMD3 vs. Input Amplitude (A
IN
)
with f
IN1
= 184.12 MHz, f
IN2
= 187.12 MHz, f
S
= 250 MSPS
0
–140
–120
–100
–80
–60
–40
–20
0 125100755025
AMPLITUDE (dBFS)
FREQUENCY (MHz)
09996-033
250MSPS
89.12MHz @ –7.0dBFS
92.12MHz @ –7.0dBFS
SFDR = 88dBc (95dBFS)
Figure 36. AD9634-250 Two-Tone FFT with f
IN1
= 89.12 MHz, f
IN2
= 92.12 MHz
09996-034
0
–140
–120
–100
–80
–60
–40
–20
01100755025 25
AMPLITUDE (dBFS)
FREQUENCY (MHz)
250MSPS
184.12MHz @ –7.0dBFS
187.12MHz @ –7.0dBFS
SFDR = 88dBc (95dBFS)
Figure 37. AD9634-250 Two Tone FFT with f
IN1
= 184.12 MHz, f
IN2
= 187.12 MHz
100
95
90
85
80
75
70
65
40 60 80 100 120 140 160 180 200 220 240 260
SNR/SFDR (dBFS and dBc)
SAMPLE RATE (MSPS)
SNR
SFDR
09996-035
Figure 38. AD9634-250 Single-Tone SNR/SFDR vs. Sample Rate (f
S
)
with f
IN
= 90 MHz
16000
14000
12000
10000
8000
6000
4000
2000
0
NUMBER OF HITS
OUTPUT CODE
0.407 LSB rms
16,384 TOTAL HITS
09996-036
N – 1 N N + 1
Figure 39. AD9634-250 Grounded Input Histogram, f
S
= 250 MSPS