参数资料
型号: SX8723CWLTDT
厂商: Semtech
文件页数: 22/67页
文件大小: 0K
描述: IC DAS ADC 16BIT I2C/SRL
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: 12-WFDFN 裸露焊盘
供应商设备封装: 12-MLPD-EP(4x4)
包装: 标准包装
其它名称: SX8723CWLTDTDKR
www.semtech.com/products/
Page 29
ADVANCED COMMUNICATIONS & SENSING
DATASHEET
SX8723C
ZoomingADC for sensing data acquisition
Revision 1.01
January 2011
Semtech
7.7.2 Over-Sampling Frequency (fs)
The word SetFs[1:0] (see Table 14) is used to select the over-sampling frequency fs. The over-sampling frequency is
derived from the 4MHz oscillator clock.
7.7.3 Over-Sampling Ratio (OSR)
The over-sampling ratio (OSR) defines the number of integration cycles per elementary conversion. Its value is set with
the word SetOsr[2:0] in power of 2 steps (see Table 15) given by:
7.7.4 Number of Elementary Conversions (Nelconv)
As mentioned previously, the whole conversion sequence is made of a set of NELCONV elementary incremental
conversions. This number is set with the word SetNelconv[1:0] in power of 2 steps (see Table 16) given by:
Table 14. Sampling frequency settings
SetFs bitfield
(RegACCfg2[7:6])
Over-Sampling Frequency fs
[Hz]
00
62.5 kHz
01
125 kHz
10
250 kHz
11
500 kHz
Equation 14
Table 15. Over-sampling ratio settings
SetOsr[2:0]
(RegACCfg[4:2])
Over-Sampling Ratio
OSR [-]
000
8
001
16
010
32
011
64
100
128
101
256
110
512
111
1024
Equation 15
]
[
2
0]
:
SetOsr[2
3
= +
OSR
]
[
2
0]
:
[1
SetNelconv
=
ELCONV
N
Not
Recommended
for
New
Designs
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