- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄297486 > SX8723E083TRT 5-CH 16-BIT PROPRIETARY METHOD ADC, SERIAL ACCESS, PDSO12 PDF資料下載
參數(shù)資料
| 型號： | SX8723E083TRT |
| 元件分類： | ADC |
| 英文描述： | 5-CH 16-BIT PROPRIETARY METHOD ADC, SERIAL ACCESS, PDSO12 |
| 封裝： | 4 X 4 MM, ROHS COMPLIANT, MLPD-12 |
| 文件頁數(shù)： | 15/53頁 |
| 文件大?。?/td> | 3978K |
| 代理商： | SX8723E083TRT |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁當(dāng)前第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁
ADVANCED COMMUNICATIONS & SENSING
V1.8 2009 Semtech Corp.
www.semtech.com
22
SX8723
ZoomingADC for Pressure and Temperature Sensing
ADC Characteristics
The main performance characteristics of the ADC (resolution, conversion time, etc.) are determined by three
programmable parameters. The setting of these parameters and the resulting performances are described later.
Over-sampling frequency fs
Over-Sampling Ratio OSR
Number of Elementary Conversions NELCONV
Conversion Sequence
A conversion is started each time the bit START or the bit DEF is set. As depicted in Figure 11, a complete
analog-to-digital conversion sequence is made of a set of NELCONV elementary incremental conversions and a
final quantization step. Each elementary conversion is made of (OSR+1) over-sampling periods Ts=1/fs, i.e.:
(
)
fs
OSR
T
ELCONV
1
+
=
(s)
Equation 12
The result is the mean of the elementary conversion results. An important feature is that the elementary
conversions are alternatively performed with the offset of the internal amplifiers contributing in one direction and
the other to the output code. Thus, converter internal offset is eliminated if at least two elementary sequences
are performed (i.e. if NELCONV
≥ 2). A few additional clock cycles are also required to initiate and end the
conversion properly.
Figure 11 - Analog-to-Digital Conversion Sequence
Note:
The internal bandgap reference state may be forced High or Low, or may be set to toggle during conversion at either the same rate or half
the rate of the Elementary Conversion. This may be useful to help eliminate bandgap related internal offset voltage and 1/fs noise.
Over-Sampling Frequency
The word FIN[1:0] (see Table 10) is used to select the over-sampling frequency fs. The over-sampling frequency
is derived from the 4MHz oscillator clock.
FIN[1:0]
(RegACCfg2[7:6])
Over-Sampling Frequency fs (Hz)
00
62.5 kHz
01
125 kHz
10
250 kHz
11
500 kHz
Table 10 - Over-Sampling Frequency Settings
Init
Elementary
Conversion
Elementary
Conversion
Elementary
Conversion
Elementary
Conversion
End
Conversion index
Offset
1
2
N
ELCONV-1
N
ELCONV
Conversion
Result
+
-
+
-
T
CONV
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SX8725CWLTDT | 2-CH 16-BIT PROPRIETARY METHOD ADC, SERIAL/PARALLEL ACCESS, PDSO12 |
| SX8725E083TRT | 3-CH 16-BIT PROPRIETARY METHOD ADC, SERIAL ACCESS, PDSO12 |
| SX8725E083TDT | 3-CH 16-BIT PROPRIETARY METHOD ADC, SERIAL ACCESS, PDSO12 |
| SXO9324 | VCO, 2200 MHz - 2400 MHz |
| SY55854UYITR | 2-CHANNEL, CROSS POINT SWITCH, PDSO16 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| SX8724C | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:ZoomingADC for sensing data acquisition |
| SX8724CEVK | 制造商:Semtech Corporation 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。