TYPICAL PERFORMANCE CURVES
At TA = +25°C, fS = 40kHz, VS = +5V, ±10V input range, using internal reference, unless otherwise noted.
FREQUENCY SPECTRUM
(8192 Point FFT; fIN = 9.8kHz, 0dB)
FREQUENCY SPECTRUM
(8192 Point FFT; fIN = 980Hz, 0dB)
0
–20
0
–20
–40
–40
–60
–60
–80
–80
–100
–120
–100
–120
0
5
10
15
20
0
5
10
15
20
Frequency (kHz)
Frequency (kHz)
SNR AND SINAD vs TEMPERATURE
(fIN = 1kHz, 0dB)
SFDR AND THD vs TEMPERATURE
(fIN = 1kHz, 0dB)
77
76
75
74
73
72
71
100
99
98
97
96
95
94
–100
–99
–98
–97
–96
–95
–94
SFDR
SNR and SINAD
THD
–50
–25
0
25
50
75
100
–50
–25
0
25
50
75
100
Temperature (°C)
Temperature (°C)
SIGNAL-TO-(NOISE + DISTORTION)
vs INPUT FREQUENCY (fIN = 0dB)
INTERNAL REFERENCE VOLTAGE
vs TEMPERATURE
74.0
73.8
73.6
73.4
73.2
73.0
2.515
2.510
2.505
2.500
2.495
2.490
2.485
100
1k
10k
20k
–50
–25
0
25
50
75
100
Input Signal Frequency (Hz)
Temperature (°C)
ADS7812
SBAS042A
5
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