Datasheet
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SBAS317E − APRIL 2004 − REVISED MAY 2006
www.ti.com
14
TYPICAL CHARACTERISTICS: MSC1202 ONLY (Continued)
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.
20
19
18
17
16
15
14
13
12
11
10
FAST SETTLING FILTER
EFFECTIVE NUMBER OF BITS vs DECIMATION RATIO
0 500 1000 1500 2000
ENOB (rms)
1500
Decimation Ratio =
f
MOD
f
DATA
Fast Settling Filter
EFFECTIVENUMBEROFBITSvsf
MOD
(set with ACLK)
20
16
12
8
4
ENOB (rms)
Data Rate (SPS)
1 10 100 1k 10k 100k
f
MOD
= 15.6kHz
f
MOD
= 62.5kHz
f
MOD
=203kHz
f
MOD
=110kHz
f
MOD
= 31.25kHz
EFFECTIVE NUMBER OF BITS vs f
MOD
(set with ACLK)
WITH FIXED DECIMATION
25
20
15
10
5
0
ENOB (rms)
Data Rate (SPS)
10 100 1k 10k 100k
DEC = 50
DEC > 100
DEC = 20
DEC = 10