TYPICAL CHARACTERISTICS
AVDD = +5V, DVDD = +5V, fOSC = 2.4576MHz, PGA = 1, RDAC = 150kΩ, fDATA = 10Hz, VREF ≡ (REF IN+) – (REF IN–) = +2.5V, unless otherwise specified.
EFFECTIVE NUMBER OF BITS
vs DECIMATION RATIO
EFFECTIVE NUMBER OF BITS
vs DECIMATION RATIO
22
21
20
19
18
17
16
15
14
13
12
22
21
20
19
18
17
16
15
14
13
12
PGA1
PGA4
PGA2
PGA8
PGA1
PGA1
PGA1
PGA2
PGA4
PGA8
PGA16 PGA32
PGA64
PGA128
PGA32
PGA64
PGA128
PGA16
Sinc3 Filter, Buffer ON
Sinc3 Filter
0
0
0
500
1000
Decimation Ratio =
1500
fMOD
2000
0
0
0
500
1000
Decimation Ratio =
1500
fMOD
2000
fDATA
fDATA
EFFECTIVE NUMBER OF BITS
vs DECIMATION RATIO
EFFECTIVE NUMBER OF BITS
vs DECIMATION RATIO
22
21
20
19
18
17
16
15
14
13
12
22
21
20
19
18
17
16
15
14
13
12
PGA1
PGA4
PGA2
PGA8
PGA2
PGA4
PGA8
PGA64
PGA128
PGA16 PGA32
PGA64
PGA32
PGA128
PGA16
Sinc3 Filter, VREF = 1.25V, Buffer OFF
Sinc3 Filter, VREF = 1.25V, Buffer ON
500
1000
1500
fMOD
2000
500
1000
1500
fMOD
2000
Decimation Ratio =
Decimation Ratio =
fDATA
fDATA
FAST SETTLING FILTER
EFFECTIVE NUMBER OF BITS vs DECIMATION RATIO
EFFECTIVE NUMBER OF BITS
vs DECIMATION RATIO
22
21
20
19
18
17
16
15
14
13
12
22
21
20
19
18
17
16
15
14
13
12
PGA2
PGA4
PGA8
PGA64
PGA128
PGA32
PGA16
Sinc2 Filter
Fast Settling Filter
500
1000
1500
fMOD
2000
500
1000
Decimation Ratio =
1500
fMOD
2000
Decimation Ratio =
fDATA
fDATA
ADS1218
8
SBAS187
BB [ BURR-BROWN CORPORATION ]
