Datasheet

AD7653
TYPICAL PERFORMANCE CHARACTERISTICS
CODE
INL (LSB)
0
–4
–3
–1
–2
0
3
2
1
4
16384 32768 65536
49152
02966-0-023
Figure 5. Integral Nonlinearity vs. Code
CODE IN HEX
COUNTS
7FFB
0
20000
60000
40000
80000
140000
120000
8000 8001 80038002
02966-0-027
80047FFC 7FFD 7FFE 7FFF
100000
17001
00 00
377
679
15906
114641
112516
Figure 6. Histogram of 261,120 Conversions of a
DC Input at the Code Transition
FREQUENCY (kHz)
AMPLITUDE (dB of Full Scale)
0
–180
–160
–120
–140
–100
–60
–80
0
200 300 500400
02966-0-029
100
–40
–20
f
S
= 1000kSPS
f
IN
= 101kHz
SNR = 86.0dB
THD = 90.3dB
SFDR = 91.5dB
S/[N+D] = 84.8dB
Figure 7. FFT Plot
CODE
DNL (LSB)
0
–1.0
–0.5
0.5
0
1.0
2.0
1.5
16384 32768 65536
49152
02966-0-026
Figure 8. Differential Nonlinearity vs. Code
CODE IN HEX
COUNTS
0
20000
80000
40000
100000
160000
120000
8000 8001 80038002
02966-0-028
80047FFC 7FFD 7FFE 7FFF
0
53
2856
3099
90
60000
146148
54473
54482
140000
Figure 9. Histogram of 261,120 Conversions of a
DC Input at the Code Center
FREQUENCY (kHz)
SNR, S/[N+D] (dB)
1
72
75
81
78
84
90
100
02966-0-030
1000
10
87
ENOB (Bits)
15.0
12.0
14.5
12.5
13.0
13.5
14.0
ENOB
SNR
S/[N+D]
Figure 10. SNR, S/(N+D), and ENOB vs. Frequency
Rev. A | Page 12 of 28