Datasheet

10 100 1k 10k
DecimationRatio(OSR)
ENOB(Bits)
SNR(dB)
18
16
14
12
10
8
6
4
110
98
86
74
62
50
38
26
Sinc Filter
3
Sinc Filter
2
20-40 -10 5-25 35 6550 125
Temperature( C)°
Current(mA)
30
27
24
21
18
15
1109580
InternalClock
External20MHzClock
External32MHzClock
1 10 100
InputFrequency(kHz)
CMRR(dB)
110
105
100
95
90
85
80
75
70
65
60
100 1k 10k 100k
FrequencyofPowerSupply(Hz)
PSRR(dB)
110
100
90
80
70
60
50
20-40 -10 5-25 35 6550 125
Temperature( C)°
Frequency(MHz)
10.0
9.8
9.6
9.4
9.2
9.0
8.8
8.6
8.4
8.2
8.0
1109580
4.5 4.7 4.9 5.1 5.3 5.5
PowerSupply(V)
CLKOUT(MHz)
9.8
9.7
9.6
9.5
9.4
9.3
9.2
ADS1204
SBAS301C – OCTOBER 2003 – REVISED FEBRUARY 2009 ........................................................................................................................................... www.ti.com
TYPICAL CHARACTERISTICS (continued)
AV
DD
= 5V, BV
DD
= 3V, CH x+ = +0.5V to +4.5V, CH x – = +2.5V, REFIN = external, CLKSEL = 0, and 16-bit Sinc
3
filter, with
OSR = 256, unless otherwise noted.
ANALOG POWER-SUPPLY CURRENT
ENOB vs DECIMATION RATIO vs TEMPERATURE
Figure 20. Figure 21.
CMRR vs FREQUENCY PSRR vs FREQUENCY
Figure 22. Figure 23.
CLOCK FREQUENCY vs TEMPERATURE CLOCK FREQUENCY vs POWER SUPPLY
Figure 24. Figure 25.
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