Datasheet

96
94
92
90
88
86
84
82
80
SNRandSINAD(dB)
100
10k
f (Hz)
IN
1k
SNR
SINAD
96
94
92
90
88
86
84
82
80
SNRandSINAD(dB)
-40
125
Temperature( )°C
-25
110958065503520
-10
5
SNR
SINAD
0
20
40
60
80
100
120
140
-
-
-
-
-
-
-
Frequency(kHz)
0 20
Magnitude(dB)
2 4 6 8 10 12 14 16 18
0
20
40
60
80
100
120
140
-
-
-
-
-
-
-
Frequency(kHz)
0 20
Magnitude(dB)
2 4 6 8 10 12 14 16 18
2.55
2.54
2.53
2.52
2.51
2.50
2.49
2.48
2.47
2.46
2.45
VREFOUT(V)
-40
125
Temperature( )°C
-25
110958065503520
-10
5
18
16
14
12
10
8
6
4
2
0
IDD(mA)
-40
125
Temperature( )°C
-25
110958065503520
-10
5
IBVDD
IAVDD,InternalCLK
IAVDD,ExternalCLK
ADS1209
SBAS491 –FEBRUARY 2010 www.ti.com
TYPICAL CHARACTERISTICS (continued)
At AVDD = 5V, BVDD = 3V, CHx+ = +0.2V to +4.8V, CHx– = +2.5V, V
REFIN
= V
REFOUT
= 2.5V (internal), CLKSEL = 1, and
16-bit Sinc
3
filter, with OSR = 256, unless otherwise noted.
SIGNAL-TO-NOISE RATIO AND SIGNAL-TO-NOISE + SIGNAL-TO-NOISE RATIO AND SIGNAL-TO-NOISE +
DISTORTION vs INPUT FREQUENCY DISTORTION vs TEMPERATURE
Figure 14. Figure 15.
FREQUENCY SPECTRUM FREQUENCY SPECTRUM
(4096 Point FFT, f
IN
= 1kHz, 4.6V
PP
) (4096 Point FFT, f
IN
= 5kHz, 4.6V
PP
)
Figure 16. Figure 17.
INTERNAL REFERENCE VOLTAGE SUPPLY CURRENT
vs TEMPERATURE vs TEMPERATURE
Figure 18. Figure 19.
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