- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄45341 > MPC5604CF1MMG4 (FREESCALE SEMICONDUCTOR INC) MICROCONTROLLER, PBGA208 PDF資料下載
參數(shù)資料
| 型號： | MPC5604CF1MMG4 |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | MICROCONTROLLER, PBGA208 |
| 封裝： | 17 X 17 MM, 1 MM PITCH, PLASTIC, MO-151AAF-1, MAPBGA-208 |
| 文件頁數(shù)： | 75/104頁 |
| 文件大?。?/td> | 953K |
| 代理商： | MPC5604CF1MMG4 |
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頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁當(dāng)前第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁
MPC5604B/C Microcontroller Data Sheet, Rev. 9
Electrical characteristics
Freescale Semiconductor
72
Figure 23. Spectral representation of input signal
Calling f0 the bandwidth of the source signal (and as a consequence the cut-off frequency of the anti-aliasing filter, fF),
according to the Nyquist theorem the conversion rate fC must be at least 2f0; it means that the constant time of the filter is greater
than or at least equal to twice the conversion period (tc). Again the conversion period tc is longer than the sampling time ts,
which is just a portion of it, even when fixed channel continuous conversion mode is selected (fastest conversion rate at a
specific channel): in conclusion it is evident that the time constant of the filter RFCF is definitively much higher than the
sampling time ts, so the charge level on CS cannot be modified by the analog signal source during the time in which the sampling
switch is closed.
The considerations above lead to impose new constraints on the external circuit, to reduce the accuracy error due to the voltage
drop on CS; from the two charge balance equations above, it is simple to derive Equation 11 between the ideal and real sampled
voltage on CS:
Eqn. 11
From this formula, in the worst case (when VA is maximum, that is for instance 5 V), assuming to accept a maximum error of
half a count, a constraint is evident on CF value:
Eqn. 12
f0
f
Analog source bandwidth (VA)
f0
f
Sampled signal spectrum (fC = conversion rate)
fC
f
Anti-aliasing filter (fF = RC filter pole)
fF
2 f0 < fC (Nyquist)
fF = f0 (anti-aliasing filtering condition)
tc < 2 RFCF (conversion rate vs. filter pole)
Noise
VA2
VA
------------
CP1 CP2
+CF
+
CP1 CP2
+CF CS
++
--------------------------------------------------------
=
CF 2048 CS
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MPC5604BF1CLQ6 | MICROCONTROLLER, PQFP144 |
| MPC5604BF1MLQ6 | MICROCONTROLLER, PQFP144 |
| MPC5604CF1CLQ6 | MICROCONTROLLER, PQFP144 |
| MPC5604BF1CMG4R | MICROCONTROLLER, PBGA208 |
| MPC5604BF1VLH6 | MICROCONTROLLER, PQFP64 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MPC5604E | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:MPC5604E Microcontroller Data Sheet |
| MPC5604EEVB64 | 制造商:Freescale Semiconductor 功能描述:MPC5604E EVALUATION BOARD 制造商:Freescale Semiconductor 功能描述:MPC5604E EVALUATION BOAR - Bulk 制造商:Freescale Semiconductor 功能描述:BOARD EVAL MPC5604E 制造商:Freescale Semiconductor 功能描述:EVAL BOARD MPC5604E CHASSIS CTRL 制造商:Freescale Semiconductor 功能描述:, Silicon Manufacturer:Freescale, Core Sub-Architecture:Power Architecture, Sili |
| MPC5604P | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:microcontroller units (MCUs) |
| MPC5604PEF0MLL7R | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:microcontroller units (MCUs) |
| MPC5604PEF0MLQ7R | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:microcontroller units (MCUs) |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。