www.semtech.com/products/ Page 22 ADVANCED COMMUNICATIONS & SENSING DATASHEET SX8724C ZoomingADC fo" />
參數(shù)資料
型號(hào): SX8724CWLTDT
廠商: Semtech
文件頁數(shù): 15/67頁
文件大?。?/td> 0K
描述: IC DAS ADC 16BIT I2C/SRL
標(biāo)準(zhǔn)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: 16-WQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 16-MLPQ-EP(4x4)
包裝: *
其它名稱: SX8724CWLTDTDKR
www.semtech.com/products/
Page 22
ADVANCED COMMUNICATIONS & SENSING
DATASHEET
SX8724C
ZoomingADC for sensing data acquisition
Revision 1.01
January 2011
Semtech
Similarly, the reference voltage is chosen among two differential channels (VREF = VBATT-VSS, VREF = VBG-VSS or VREF =
VREF,IN-VSS) as shown in Table 10. The selection bit is Vmux. The reference inputs VREFP and VREFN (common-mode) can
be up to the power supply range.
7.4 First Stage Programmable Gain Amplifier (PGA1)
The first stage can have a buffer function (unity gain) or provide a gain of 10 (see Table 11). The voltage VD1 at the
output of PGA1 is:
where GD1 is the gain of PGA1 (in V/V) controlled with the Pga1Gain bit.
00x01
AC3
AC2
01x01
AC2
AC3
00x10
AC5
AC4
01x10
AC4
AC5
00x11
AC7
AC6
01x11
AC6
AC7
10000
AC0(VSS)
11000
AC0(VSS)
10001
AC1(VREF)
11001
AC1(VREF)
10010
AC2
11010
AC2
10011
AC3
11011
AC3
10100
AC4
11100
AC4
10101
AC5
11101
AC5
10110
AC6
11110
AC6
10111
AC7
11111
AC7
Table 10. Analog reference Input Selection
Vmux
(RegACCfg5[0])
VREFP
VREFN
0VREF = VBATT
VSS
1
VREF = VBG or VREF,IN1
1.
External voltage reference on D1 GPIO pin. See section 6.3 on page 14 about
VSS
Equation 5
Table 11. PGA1 gain settings
Pga1Gain bit
(RegACCfg3[7])
PGA1 gain [V/V]
GD1 [V/V]
01
110
Table 9. Analog Input Selection
Amux
(RegACCfg5[5:1])
VINP
VINN
Amux
(RegACCfg5[5:1])
VINP
VINN
Sign S = 1
Sign S = -1
]
[
1
V
GD
V
IN
D
=
Not
for
New
Designs
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SX8724EVK 制造商:Semtech Corporation 功能描述:Evaluation Board for SX8724E082TRT Data Acquisition System
SX8724S 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:ZoomingADC for sensing data acquisition
SX8724SEVK 制造商:Semtech Corporation 功能描述: 制造商:Semtech Corporation 功能描述:Evaluation Kit for SX8724S