www.semtech.com/products/ Page 56 ADVANCED COMMUNICATIONS & SENSING DATASHEET SX8723C ZoomingADC fo" />
參數(shù)資料
型號(hào): SX8723CWLTDT
廠商: Semtech
文件頁數(shù): 52/67頁
文件大小: 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: 12-WFDFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 12-MLPD-EP(4x4)
包裝: 標(biāo)準(zhǔn)包裝
其它名稱: SX8723CWLTDTDKR
www.semtech.com/products/
Page 56
ADVANCED COMMUNICATIONS & SENSING
DATASHEET
SX8723C
ZoomingADC for sensing data acquisition
Revision 1.01
January 2011
Semtech
As shown in Equation 28, noise can be reduced by increasing OSR and NELCONV (increases the ADC averaging effect,
but reduces noise).
Figure 47 shows the distribution for the ADC alone (PGA1, 2, and 3 bypassed). Quantization noise is dominant in this
case, and, thus, the ADC thermal noise is below 16 bits.
As an example, consider the system where: GD2 = 10 (GD1 = 1; PGA3 bypassed), OSR = 512, NELCONV = 2, VREF = 5 V. In
this case, the noise contribution VN1 of PGA1 is dominant over that of PGA2. Using Equation 28, page 55, we get: VN,IN
= 6.4 μV (rms) at the input of the acquisition chain, or, equivalently, 0.85 LSB at the output of the ADC. Considering 0.2
V (rms) maximum signal amplitude, the signal-to-noise ratio is 90dB.
Table 39. PGA Noise Measurement (n = 16bits, OSR = 512, NELCONV = 2, VREF = 5V)
Parameter
PGA1
PGA2
PGA3
Output RMS noise(uV)
VN1 = 205
VN2 = 340
VN3 = 365
Figure 47. ADC Noise (PGA1, 2 & 3 Bypassed, OSR = 512, NELCONV = 2)
Figure 48. Total Input Referred Noise
0
20
40
60
80
-5
-4
-3
-2
-1
0
1
2
3
4
5
Output Code Deviation From Mean Value [LSB]
Oc
cu
ren
ces
[%
o
f
to
tal
sam
p
les
]
PGA1
PGA2
PGA3
ADC
±Vin
±Voff
±Vref
Analog
Inputs
Reference
Inputs
VIN,ADC
VREF,ADC
VSS
VREF
AC2
AC3
AC4
AC5
N.C.
VSS
VBATT
VSS
VREF
S
VN,IN
VIN
Not
Recommended
for
New
Designs
相關(guān)PDF資料
PDF描述
SX8723E083TDT IC DAS PRESS/TEMP SENS 12MLPD
SX8724CWLTDT IC DAS ADC 16BIT I2C/SRL
SX8724E082TDT IC DAS PRESS/TEMP SENS 16MLPQ
SX8725CWLTDT IC DAS ADC 16BIT I2C/SRL
SX8725E083TDT IC DAS PRESS/TEMP SENS 12MLPD
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SX8723E083TDT 功能描述:IC DAS PRESS/TEMP SENS 12MLPD RoHS:是 類別:集成電路 (IC) >> 接口 - 傳感器和探測(cè)器接口 系列:ZoomingADC™ 其它有關(guān)文件:Automotive Product Guide 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:74 系列:- 類型:觸控式傳感器 輸入類型:數(shù)字 輸出類型:數(shù)字 接口:JTAG,串行 電流 - 電源:100µA 安裝類型:表面貼裝 封裝/外殼:20-TSSOP(0.173",4.40mm 寬) 供應(yīng)商設(shè)備封裝:20-TSSOP 包裝:管件
SX8723E083TRT 功能描述:IC DAS PRESSURE/TEMP SENS 12MLPD RoHS:是 類別:集成電路 (IC) >> 接口 - 傳感器和探測(cè)器接口 系列:ZoomingADC™ 其它有關(guān)文件:Automotive Product Guide 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:74 系列:- 類型:觸控式傳感器 輸入類型:數(shù)字 輸出類型:數(shù)字 接口:JTAG,串行 電流 - 電源:100µA 安裝類型:表面貼裝 封裝/外殼:20-TSSOP(0.173",4.40mm 寬) 供應(yīng)商設(shè)備封裝:20-TSSOP 包裝:管件
SX8723S 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:ZoomingADC for sensing data acquisition
SX8723SWLTDT 制造商:Semtech Corporation 功能描述:2 INPUTS ZOOMING ADC WITH SPI
SX8724 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:ZoomingADC? for Pressure and Temperature Sensing