www.semtech.com/products/ Page 14 ADVANCED COMMUNICATIONS & SENSING DATASHEET SX8723C ZoomingADC fo" />
參數(shù)資料
型號: SX8723CWLTDT
廠商: Semtech
文件頁數(shù): 6/67頁
文件大?。?/td> 0K
描述: IC DAS ADC 16BIT I2C/SRL
標準包裝: 1
系列: ZoomingADC™
類型: 數(shù)據(jù)采集系統(tǒng)(DAS)
輸入類型: 差分
輸出類型: 數(shù)字
接口: I²C
安裝類型: 表面貼裝
封裝/外殼: 12-WFDFN 裸露焊盤
供應商設備封裝: 12-MLPD-EP(4x4)
包裝: 標準包裝
其它名稱: SX8723CWLTDTDKR
www.semtech.com/products/
Page 14
ADVANCED COMMUNICATIONS & SENSING
DATASHEET
SX8723C
ZoomingADC for sensing data acquisition
Revision 1.01
January 2011
Semtech
6 General Description
The SX8723C is a complete low-power acquisition path with programmable gain, acquisition speed and resolution.
6.1 Bloc diagram
6.2 VREF
The internally generated VREF is a trimmed bandgap reference with a nominal value of 1.22V that provides a stable
voltage reference for the ZoomingADC.
This reference voltage is directly connected to one of the ZoomingADC reference multiplexer inputs.
The bandgap voltage stability is only guaranteed for VBATT voltages of 3V and above. As VBATT drops down to 2.4V, the
bandgap voltage could reduce by up to 50mV.
The bandgap has relatively weak output drive so it is recommended that if the bandgap is required as a signal input
then PGA1 must be enabled with gain = 1.
Figure 3. SX8723C bloc diagram
AC0
SI
G
N
AL
MU
X
+
-
+
-
RE
F
M
U
X
READY
AC3
AC2
AC1
PGA
ADC
VREF
+
-
ZoomingADC
TM
VPUMP
VBATT
SCL
SDA
D1
D0
SX8723C
VSS
CONTROL LOGIC
GPIO
CHARGE
PUMP
4MHz
OSC
AC5
AC4
I
2C
D0: digital IO, Vref output or I2C address select
D1: digital IO, Vref input or I2C address select
(1)
Not
Recommended
for
New
Designs
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相關代理商/技術參數(shù)
參數(shù)描述
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