SX8722I070LF SEMTECH [Semtech Corporation], SX8722I070LF Datasheet - Page 65
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SX8722I070LF
Manufacturer Part Number
SX8722I070LF
Description
High gain acquisition for sensor interface
Manufacturer
SEMTECH [Semtech Corporation]
Datasheet
1.SX8722I070LF.pdf
(108 pages)
- Current page: 65 of 108
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Using look-up Table 52, resolution can be set between 6 and 16 bits. Notice that, because of 16-bit register use for the ADC
output, practical resolution is limited to 16 bits , i.e. n = 16. Even if the resolution is truncated to 16 bit by the output
register size, it may make sense to set OSR and N
noise in the PGA .
12.8.6. Conversion Time & Throughput
As explained using Figure 3, conversion time is given by:
ACS - Revision 4.2
©2008 Semtech Corp.
ADVANCED COMMUNICATIONS & SENSING
T
CONV
=
(
N
ELCONV
(Eq. 16)
Table 52. Resolution vs. SET_OSR[2:0] and SET_NELC[1:0] settings
(shaded area: resolution truncated to 16 bits due to output register size CxDataOutMSB + CxDataOutLSB [15:0])
⋅
Figure 34. Resolution vs. SET_OSR[2:0] and SET_NELC[2:0]
(
SET_OSR [2:0]
OSR
October 2008
000
001
010
011
100
101
110
+
111
) 1
+
1
/ )
f
S
17
15
13
11
9
7
5
000
SET_NELC=
00
10
12
14
16
16
16
6
8
001
ELCONV
010
s [ ]
Page 65
11
10
01
00
to higher values in order to reduce the influence of the thermal
SET_OSR
011
01
13
15
16
16
16
11
7
9
100
SET_NELC
High gain acquisition for sensor interface
101
110
10
10
12
14
16
16
16
16
8
111
13
15
16
16
16
16
11
11
9
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