Datasheet

AD7671
–10–
0
AMPLITUDE – dB of Full Scale
FREQUENCY – kHz
100 200 300 400 500
0
–20
–40
–60
–80
–100
–120
–140
–160
–180
FS = 1MSPS
f
IN
= 45.5322kHz
SNR = 89.45dB
THD = –100.05dB
SFDR = 100.49dB
SINAD = 89.1dB
TPC 7. FFT Plot
FREQUENCY – kHz
70
110
SNR AND S/[N+D] – dB
75
85
95
100
1000
SNR
100
90
80
13.0
13.5
14.5
15.5
16.0
15.0
14.0
ENOB – Bits
SINAD
ENOB
TPC 8. SNR, S/(N + D), and ENOB vs. Frequency
92
SNR (REFERRED TO FULL SCALE) – dB
INPUT LEVEL – dB
–80
90
88
86
–70 –60 –50 –40 –30 –20 –10 0
TPC 9. SNR vs. Input Level
96
93
90
87
84
–98
–100
–102
–104
–55 –35 –15 5 25 45 65 85 105 125
SNR – dB
THD – dB
TEMPERATURE – C
THD
SNR
TPC 10. SNR, THD vs. Temperature
THD
SECOND HARMONIC
THIRD HARMONIC
SFDR
–60
–65
–70
–75
–80
–85
–90
–95
–100
–105
–110
–115
110
105
100
95
90
85
80
75
70
65
60
1 10 100 1000
THD, HARMONICS – dB
SFDR – dB
FREQUENCY – kHz
TPC 11. THD, Harmonics, and SFDR vs. Frequency
–60
–70
–80
–90
–100
–110
–120
–130
–140
–150
–60 –50 –40 –30 –20 –10 0
THD, HARMONICS – dB
INPUT LEVEL – dB
THD
THIRD HARMONIC
SECOND HARMONIC
TPC 12. THD, Harmonics vs. Input Level
REV. C