Datasheet

AD9230
Rev. 0 | Page 18 of 32
0
–20
–40
–60
–80
–100
–120
–140
0 12010080604020
AMPLITUDE (dBFS)
FREQUENCY (MHz)
250MSPS
10.3MHz @ –1.0dBFS
SNR: 64.1dB
ENOB: 10.5 BITS
SFDR: 84dBc
06002-123
Figure 34. AD9230-250 64k Point Single-Tone FFT; 250 MSPS, 10.3 MHz
0
–20
–40
–60
–80
–100
–120
–140
0 12010080604020
AMPLITUDE (dBFS)
FREQUENCY (MHz)
250MSPS
70.3MHz @ –1.0dBFS
SNR: 63.9dB
ENOB: 10.5 BITS
SFDR: 79dBc
06002-124
Figure 35. AD9230-250 64k Point Single-Tone FFT; 250 MSPS, 70.3 MHz
0
–20
–40
–60
–80
–100
–120
–140
0 12010080604020
AMPLITUDE (dBFS)
FREQUENCY (MHz)
250MSPS
170.3MHz @ –1.0dBFS
SNR: 63.3dB
ENOB: 10.5 BITS
SFDR: 78dBc
06002-125
Figure 36. AD9230-250 64k Point Single-Tone FFT; 250 MSPS, 170.3 MHz
40000
35000
30000
25000
20000
15000
10000
5000
0
N – 3 N – 2 N – 1 N N + 1 N + 2 N + 3 MORE
NUMBER OF HITS
BIN
INPUT REFERRED NOISE: 0.71 LSBs
06002-126
Figure 37. AD9230-250 Grounded Input Histogram; 250 MSPS
90
85
80
75
70
65
60
55
50
0 45040035030025020015010050
SNR/SFDR (dB)
ANALOG INPUT FREQUENCY (MHz)
SNR (dB) –40°C
SFDR (dBc) –40°C
SNR (dB) +25°C
SFDR (dBc) +25°C
SNR (dB) +85°C
SFDR (dBc) +85°C
06002-118
Figure 38. AD9230-250 Single-Tone SNR/SFDR vs. Input Frequency (f
IN
) and
Temperature with 1.25 V p-p Full Scale; 250 MSPS
100
10
20
30
40
50
60
70
80
90
0
100 90 020 103040506080 70
SNR/SFDR (dB)
AMPLITUDE (–dBFS)
SNR (dBFS)
SFDR (dBc)
SFDR (dBFS)
SNR (dBc)
06002-128
Figure 39. AD9230-250 SNR/SFDR vs. Input Amplitude; 250 MSPS, 170.3 MHz