參數(shù)資料
型號: XE8801AMI027LF
廠商: Semtech
文件頁數(shù): 126/135頁
文件大小: 0K
描述: IC DAS 16BIT FLASH 8K MTP 44LQFP
標(biāo)準(zhǔn)包裝: 800
系列: XE880x
應(yīng)用: 感測機(jī)
核心處理器: Coolrisc816?
程序存儲器類型: 閃存(22 kB)
控制器系列: XE8000
RAM 容量: 512 x 8
接口: UART,USRT
輸入/輸出數(shù): 24
電源電壓: 2.4 V ~ 5.5 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 44-VFQFN 裸露焊盤
包裝: 托盤
供應(yīng)商設(shè)備封裝: 44-MLPQ(7x7)
產(chǎn)品目錄頁面: 585 (CN2011-ZH PDF)
配用: XE8000MP-ND - PROG BOARD AND PROSTART2 CARD
Semtech 2005
www.semtech.com
16-5
XE8801A – SX8801R
Like most ADCs intended for instrumentation or sensing applications, the ZoomingADC
is an over-sampled
converter (See Note1). The ADC is a so-called incremental converter, with bipolar operation (the ADC accepts both
positive and negative input voltages). In first approximation, the ADC output result relative to full-scale (FS) delivers
the quantity:
2
/
2
/
,
REF
ADC
IN
ADC
V
FS
OUT
(Eq. 1)
in two's complement (see Sections 16.4 and 16.7 for details). The output code OUTADC is -FS/2 to +FS/2 for VIN,ADC
-VREF/2 to +VREF/2 respectively. As will be shown in section 16.6, VIN,ADC is related to input voltage VIN by the
relationship:
REF
TOT
IN
TOT
ADC
IN
V
GDoff
V
GD
V
=
,
(V)
(Eq. 2)
where GDTOT is the total PGA gain, and GDoffTOT is the total PGA offset.
PGA1
PGA2
PGA3
ADC
MU
X
Register Bank
Acquisition Chain
GD1
GD2
GD3
OFF2
OFF3
0
1
2
3
4
5
6
7
0
1
2
3
AC_A
AC_R
RegACOutLSB
RegACOutMSB
8
Sampling Frequency f
S
ADC Busy Flag
Default Settings
Conversion Start
Nbr of Elementary Cycles
Over-Sampling Ratio
Continuous vs. On-Request
Power Saving Modes
PGA Enabling
RegACCfg5
RegACCfg4
RegACCfg3
RegACCfg2
RegACCfg1
RegACCfg0
5
2
4
7
Inputs
V
IN
f
S
V
REF
V
IN,ADC
f
S
MU
X
Figure 16-2. ZoomingADC
detailed functional block diagram
1 Note: Over-sampled converters are operated with a sampling frequency f
S much higher than the input signal's Nyquist rate (typically fS is 20-
1'000 times the input signal bandwidth). The sampling frequency to throughput ratio is large (typically 10-500). These converters include digital
decimation filtering. They are mainly used for high resolution, and/or low-to-medium speed applications.
Not
Recommended
for
New
Designs
相關(guān)PDF資料
PDF描述
X28HC256JIZ-15T1 IC EEPROM 256KBIT 150NS 32PLCC
MR25H10CDCR IC MRAM 1MBIT 40MHZ 8DFN
X28HC256JZ-15T1 IC EEPROM 256KBIT 150NS 32PLCC
MR256A08BCMA35R IC MRAM 256KB 35NS 48BGA
MR256A08BYS35R IC MRAM 256KB 35NS 44TSOP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XE8802 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Sensing Machine Data Acquisition MCU
XE8802MI000 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Sensing Machine Data Acquisition MCU
XE8802MI035LF 功能描述:IC DAS 16BIT FLASH 8K 100-LQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器 - 特定應(yīng)用 系列:XE880x 產(chǎn)品變化通告:Product Discontinuation 26/Aug/2009 標(biāo)準(zhǔn)包裝:250 系列:- 應(yīng)用:網(wǎng)絡(luò)處理器 核心處理器:4Kc 程序存儲器類型:- 控制器系列:- RAM 容量:16K x 8 接口:以太網(wǎng),UART,USB 輸入/輸出數(shù):- 電源電壓:1.8V, 3.3V 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:208-LQFP 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:PG-LQFP-208 其它名稱:SP000314382
XE8805 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Data Acquisition MCU
XE8805AMI000 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Data Acquisition MCU