参数资料
型号: SX8724E082TDT
厂商: Semtech
文件页数: 16/53页
文件大小: 0K
描述: IC DAS PRESS/TEMP SENS 16MLPQ
标准包装: 1
系列: ZoomingADC™
类型: 数据采集系统(DAS)
输入类型: 差分
输出类型: 数字
接口: I²C
安装类型: 表面贴装
封装/外壳: 16-VQFN 裸露焊盘
供应商设备封装: 16-MLPQ(4x4)
包装: 标准包装
产品目录页面: 585 (CN2011-ZH PDF)
其它名称: SX8724E082TDTDKR
ADVANCED COMMUNICATIONS & SENSING
V1.23 2009 Semtech Corp.
www.semtech.com
23
SX8724
ZoomingADC for Pressure and Temperature Sensing
Over-Sampling Ratio
The over-sampling ratio (OSR) defines the number of integration cycles per elementary conversion. Its value is
set with the word SET_OSR[2:0] in power of 2 steps (see Table 11) given by:
[ ]
0
:
2
_
3
2
OSR
SET
OSR
+
=
Equation 13
SET_OSR[2:0]
(RegACCfg0[4:2])
Over-Sampling Ratio
OSR (-)
000
8
001
16
010
32
011
64
100
128
101
256
110
512
111
1024
Table 11 - Over-Sampling Ratio Settings
Elementary Conversions
As mentioned previously, the whole conversion sequence is made of a set of NELCONV elementary incremental
conversions. This number is set with the word SET_NELC[1:0] in power of 2 steps (see Table 12) given by:
[ ]
0
:
1
_
2
NELC
SET
ELCONV
N
=
Equation 14
SET_NELC[1:0]
(RegACCfg0[6:5])
# of Elementary
Conversions
NELCONV (-)
00
1
01
2
10
4
11
8
Table 12 - Number of Elementary Conversion Settings
As already mentioned, NELCONV must be equal or greater than 2 to reduce internal amplifier offsets.
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