TYPICAL CHARACTERISTICS
TA = +25°C, fS = 40kHz, VDIG = VANA = +5V, and using internal reference and fixed resistors (see Figure 7b), unless otherwise specified.
FREQUENCY SPECTRUM
FREQUENCY SPECTRUM
(8192 Point FFT; fIN = 1kHz, 0dB)
(8192 Point FFT; fIN = 15kHz, 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)
SIGNAL-TO-(NOISE + DISTORTION)
vs INPUT FREQUENCY AND INPUT AMPLITUDE
SIGNAL-TO-(NOISE + DISTORTION)
vs INPUT FREQUENCY (fIN = 0dB)
90
80
70
60
50
40
30
20
10
0
90
80
70
60
50
40
30
20
10
0dB
–20dB
–60dB
0
2
4
6
8
10
12
14
16
18
20
100
1k
10k
100k
1M
Input Signal Frequency (kHz)
Input Signal Frequency (Hz)
SIGNAL-TO-(NOISE + DISTORTION) vs TEMPERATURE
(fIN = 1kHz, 0dB; fS = 10kHz to 40kHz)
AC PARAMETERS vs TEMPERATURE
(fIN = 1kHz, 0dB)
74.0
73.9
73.8
73.7
73.6
110
105
100
95
–60
–65
–70
–75
–80
–85
–90
–95
–100
–105
–110
SFDR
30kHz
20kHz
10kHz
40kHz
90
85
80
SNR and SINAD
75
70
THD
65
60
–75 –50 –25
0
25
50
75
100 125 150
–75 –50 –25
0
25
50
75
100 125 150
Temperature (°C)
Temperature (°C)
ADS7806
SBAS021B
5
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