参数资料
型号: SX8723CWLTDT
厂商: Semtech
文件页数: 24/67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 30
ADVANCED COMMUNICATIONS & SENSING
DATASHEET
SX8723C
ZoomingADC for sensing data acquisition
Revision 1.01
January 2011
Semtech
As already mentioned, NELCONV must be equal or greater than 2 to reduce internal amplifier offsets.
7.7.5 Resolution
The theoretical resolution of the ADC, without considering thermal noise, is given by:
Using look-up Table 17 or the graph plotted in Figure 15, 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
Table 16. Number of elementary conversion
SetOsr[2:0]
(RegACCfg[4:2])
# of Elementary Conversion
NELCONV [-]
00
1
01
2
10
4
11
8
Equation 16
Figure 15. Resolution vs. SetOsr[2:0] and SetNelconv[2:0]
]
[
)
(
log
)
(
log
2
bit
N
OSR
n
ELCONV
+
=
14.0
12.0
8.0
6.0
4.0
000
010
100
Res
o
luti
on
-
n[bi
ts]
SetOsr[2:0]
16.0
10.0
00
01
10
11
001
011
101
110
111
SetNelconv[1:0]
Not
Recommended
for
New
Designs
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