Datasheet

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SBAS317E − APRIL 2004 − REVISED MAY 2006
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13
TYPICAL CHARACTERISTICS: MSC1202 ONLY
AV
DD
= +5V, DV
DD
= +5V, f
OSC
= 8MHz, PGA = 1, f
MOD
= 15.625kHz, ADC Bipolar Mode, Buffer ON, and V
REF
(REF IN+) − (REF IN−) = +2.5V, unless
otherwise specified.
EFFECTIVE NUMBER OF BITS
vs DATA RATE
20
19
18
17
16
15
14
13
12
11
10
ENOB (rms)
Data Rate (SPS)
1 10 100 1000
Sinc
3
Filter, Buffer OFF
PGA1
PGA128
20
19
18
17
16
15
14
13
12
11
10
EFFECTIVE NUMBER OF BITS
vs DECIMATION RATIO
Decimation Ratio =
f
MOD
f
DATA
0 500 1000 1500 2000
ENOB (rms)
PGA1
PGA128
Sinc
3
Filter, Buffer OFF
20
19
18
17
16
15
14
13
12
11
10
EFFECTIVE NUMBER OF BITS
vs DECIMATION RATIO
0 500 1000 1500 2000
ENOB (rms)
PGA1
PGA128
Decimation Ratio =
f
MOD
f
DATA
Sinc
3
Filter, Buffer ON
20
19
18
17
16
15
14
13
12
11
10
PGA1
PGA128
EFFECTIVE NUMBER OF BITS
vs DECIMATION RATIO
0 500 1000 1500 2000
ENOB (rms)
Decimation Ratio =
f
MOD
f
DATA
AV
DD
= 3V, Sinc
3
Filter,
V
REF
= 1.25V, Buffer OFF
20
19
18
17
16
15
14
13
12
11
10
EFFECTIVE NUMBER OF BITS
vs DECIMATION RATIO
0 500 1000 1500 2000
ENOB (rms)
PGA1
PGA128
AV
DD
= 3V, Sinc
3
Filter,
V
REF
= 1.25V, Buffer ON
Decimation Ratio =
f
MOD
f
DATA
20
19
18
17
16
15
14
13
12
11
10
EFFECTIVE NUMBER OF BITS
vs DECIMATION RATIO
0 500 1000 1500 2000
ENOB (rms)
PGA1
Decimation Ratio =
f
MOD
f
DATA
Sinc
2
Filter
PGA128