參數(shù)資料
型號(hào)： ADS1226
廠商： Analog Devices, Inc.
英文描述： 24-Bit Analog-to-Digital Converter with One- and Two-Channel Differential Inputs and Internal Oscillator
中文描述： 24位模擬數(shù)字轉(zhuǎn)換器與單和雙通道差分輸入和內(nèi)部振蕩器
文件頁數(shù)： 18/24頁
文件大?。?/td> 398K
代理商： ADS1226
www.ti.com
SMALL INPUT SIGNALS
Figure 32
shows the schematic of the ADS1225 for
measuring small output signals such as the output of
a bridge sensor or load cell. In this application, the
load cell is combined with the ADS1225 and an
MSP430
microcontroller. An
OPA2333
is used to
buffer the inputs and to provide the gain of the load
cell signal. A 5V source is used as the reference and
the excitation, although any clean source can create
a proper ratiometric signal for the reference.
ADS1225
VREFP
VREFN
START
DRDY
/DOUT
AVDD
DVDD
GND
AINP1
MSP430xxx
or C
m
GND
+5V
+5V
+5V
R
F
4.99k
W
R
F
4.99k
W
R
G
100
W
0.22 F
m
1k
W
10 F
m
0.1 F
m
0.1 F
m
Load Cell
AINN1
1k
W
+3V
+3V
0.1 F
m
0.1 F
m
0.1 F
m
SCLK
1/2
OPA2333
1/2
OPA2333
G = 1 +
2R
F
R
G
MODE
TEMPEN
BUFEN
Use low-drift resistors
for R and R
G
ADS1225
ADS1226
SBAS346–MAY 2006
measurement of approximately 1V while keeping the
noise contribution of the OPA2333 low. The noise is
low enough compared to full-scale to create a
several-thousand
count
High-Speed mode. For better accuracy, this noise
could be lowered through either additional filtering or
using the High-Resolution mode.
weigh
scale,
even
in
It is important to make sure that the reference and
inputs are clean from clocks or other periodic signals
to prevent coupling. Isolate the analog from the
digital supplies and grounds whenever possible.
A typical load cell with a bridge sensitivity of 2mV/V
using a 5V source would have a full-scale output of
10mV. The recommended gain of the OPA2333, for
this load cell using low-drift resistors, would be 1 +
2R
F
/R
G
= 100.8V/V. This value gives a full-scale
Figure 32. Using the OPA2333 as a Gain Stage in Front of the ADS1225
18
Submit Documentation Feedback
相關(guān)PDF資料
PDF描述
ADS1226IRGVR 24-Bit Analog-to-Digital Converter with One- and Two-Channel Differential Inputs and Internal Oscillator
ADS1226IRGVRG4 24-Bit Analog-to-Digital Converter with One- and Two-Channel Differential Inputs and Internal Oscillator
ADS1226IRGVT 24-Bit Analog-to-Digital Converter with One- and Two-Channel Differential Inputs and Internal Oscillator
ADS1226IRGVTG4 24-Bit Analog-to-Digital Converter with One- and Two-Channel Differential Inputs and Internal Oscillator
ADS1245 Low-Power, 24-Bit Analog-to-Digital Converter
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADS1226IRGVR 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 24-Bit ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS1226IRGVRG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 24-Bit ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS1226IRGVT 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 24-Bit ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS1226IRGVT 制造商:Texas Instruments 功能描述:A/D Converter (A-D) IC
ADS1226IRGVTG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 24-Bit ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購

我的聯(lián)系方式

*
*
*