Datasheet

AD7652
TYPICAL PERFORMANCE CHARACTERISTICS
CODE
INL (LSB)
0
–4
–3
–1
–2
0
3
2
1
4
16384 32768 65536
49152
02965-0-023
Figure 5. Integral Nonlinearity vs. Code
CODE IN HEX
COUNTS
7FFB
0
20000
60000
40000
80000
140000
120000
8000 8001 80038002
02965-0-027
80047FFC 7FFD 7FFE 7FFF
100000
00 00
70
477
112112
111974
25889
10598
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
100 150 250200
02965-0-029
50
–40
–20
f
S
= 500kSPS
f
IN
= 102kHz
SNR = 83.4dB
THD = 90.9dB
SFDR = 91.2dB
S/[N+D] = 82.8dB
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
02965-0-028
80047FFC 7FFD 7FFE 7FFF
0
110
8659
801
10
60000
144958
41624
64967
140000
Figure 9. Histogram of 261,120 Conversions of a
DC Input at the Code Center
FREQUENCY (kHz)
SNR, S/[N+D] (dB)
1
76
79
82
88
100
02965-0-030
1000
10
85
ENOB (Bits)
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. 0 | Page 12 of 28