Datasheet

AD7652
FREQUENCY (kHz)
THD, HARMONICS (dB)
1
–120
–100
–80
–90
–70
–50
100
02966-0-031
1000
10
–60
SFDR (dB)
140
0
100
20
40
60
80
SECOND
HARMONIC
SFDR
THIRD
HARMONIC
–110
THD
120
Figure 11. THD, Harmonics, and SFDR vs. Frequency
INPUT LEVEL (dB)
SNR, S/[N+D] REFERRED TO FULL SCALE (dB)
–60
82
87
02965-0-032
0–50 –40 –30 –20 –10
83
84
85
86
SNR
S/[N+D]
Figure 12. SNR and S/(N+D) vs. Input Level (Referred to Full Scale)
TEMPERATURE (°C)
SNR, S/[N+D] (dB)
–55
85
89
02965-0-033
125–35 –15 25 45 65
86
87
88
ENOB
585
105
14.00
14.50
14.13
14.25
14.38
ENOB (Bits)
SNR
S[N+D]
Figure 13. SNR, S/(N+D), and ENOB vs. Temperature
TEMPERATURE (°C)
THD, HARMONICS (dB)
–55
–120
–100
02965-0-034
125–35 –15 25 45 65
–115
–105
SECOND
HARMONIC
585
105
THIRD
HARMONIC
THD
–110
Figure 14. THD and Harmonics vs. Temperature
SAMPLE RATE (SPS)
10
02965-0-036
1000000100 10000 100000
10
1000
100
1000
10000
0.001
1
0.01
OPERATING CURRENT (µA)
AVDD
OVDD
DVDD
PDREF = PDBUF = HIGH
0.1
Figure 15. Operating Current vs. Sample Rate
TEMPERATURE (°C)
ZERO ERROR, FULL SCALE (LSB)
–55
6
02965-0-040
125–35 5 25 45 65
2
3
5
–15
85
105
4
0
1
–1
–3
–2
–5
–4
–6
ZERO ERROR
FULL SCALE
Figure 16. Zero Error, Full Scale with Reference vs. Temperature
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