参数资料
型号: SX8723CWLTDT
厂商: Semtech
文件页数: 8/67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 16
ADVANCED COMMUNICATIONS & SENSING
DATASHEET
SX8723C
ZoomingADC for sensing data acquisition
Revision 1.01
January 2011
Semtech
6.3.1 Optional Operating Mode: External Vref
D0 and D1 are multi-functional pins with the following functions in different operating modes (see RegMode register
for control settings):
This allows external monitoring of the internal bandgap reference or the ability to use an external reference input for
the ADC, or the option to filter the internal VREF output before feeding back as VREF,ADC input. The internally generated
VREF is a trimmed as ADC reference with a nominal value of 1.22V. When using an external VREF,ADC input, it may have
any value between 0V and VBATT. Simply substitute the external value for 1.22 V in the ADC conversion calculations.
Figure 6. D0 and D1 are Digital Inputs / Outputs
Figure 7. D1 is Reference Voltage Input and D0 is Digital
Input / Output
Figure 8. D1 is Digital Input / Output and D0 Reference
Voltage Output
Figure 9. D0 is Reference Voltage Output and D1 is Reference
Voltage Input
+
-
D1/VREFIN
D0/VREFOUT
RegMode[0] = 0
0
1
RegMode[1] = 0
0
1
0
1
GPIO
ZoomingADC
GPIO
Internal
Bandgap
reference
VBG
VREF
+
-
D1/VREFIN
D0/VREFOUT
RegMode[0] = 1
0
1
RegMode[1] = 0
0
1
0
1
GPIO
ZoomingADC
GPIO
Internal
Bandgap
reference
VREF
+
-
D1/VREFIN
D0/VREFOUT
RegMode[0] = 0
0
1
RegMode[1] = 1
0
1
0
1
GPIO
ZoomingADC
GPIO
Internal
Bandgap
reference
VBG
VREF
+
-
D1/VREFIN
D0/VREFOUT
RegMode[0] = 1
0
1
RegMode[1] = 1
0
1
0
1
GPIO
ZoomingADC
GPIO
Internal
Bandgap
reference
VBG
VREF
Not
Recommended
for
New
Designs
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