- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄45341 > MPC5604CF1MLH4R (FREESCALE SEMICONDUCTOR INC) MICROCONTROLLER, PQFP64 PDF資料下載
參數(shù)資料
| 型號： | MPC5604CF1MLH4R |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | MICROCONTROLLER, PQFP64 |
| 封裝： | 10 X 10 MM, 1.40 MM HEIGHT, 0.50 MM PITCH, MS-026BCD, LQFP-64 |
| 文件頁數(shù)： | 71/104頁 |
| 文件大?。?/td> | 953K |
| 代理商： | MPC5604CF1MLH4R |
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頁當前第71頁第72頁第73頁第74頁第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
Electrical characteristics
MPC5604B/C Microcontroller Data Sheet, Rev. 9
Freescale Semiconductor
69
possible, ideally infinite. This capacitor contributes to attenuating the noise present on the input pin; furthermore, it sources
charge during the sampling phase, when the analog signal source is a high-impedance source.
A real filter can typically be obtained by using a series resistance with a capacitor on the input pin (simple RC filter). The RC
filtering may be limited according to the value of source impedance of the transducer or circuit supplying the analog signal to
be measured. The filter at the input pins must be designed taking into account the dynamic characteristics of the input signal
(bandwidth) and the equivalent input impedance of the ADC itself.
In fact a current sink contributor is represented by the charge sharing effects with the sampling capacitance: CS being
substantially a switched capacitance, with a frequency equal to the conversion rate of the ADC, it can be seen as a resistive path
to ground. For instance, assuming a conversion rate of 1 MHz, with CS equal to 3 pF, a resistance of 330 k is obtained (REQ
= 1 / (fc*CS), where fc represents the conversion rate at the considered channel). To minimize the error induced by the voltage
partitioning between this resistance (sampled voltage on CS) and the sum of RS + RF + RL + RSW + RAD, the external circuit
must be designed to respect the Equation 4:
Eqn. 4
Equation 4 generates a constraint for external network design, in particular on a resistive path. Internal switch resistances (RSW
and RAD) can be neglected with respect to external resistances.
Figure 20. Input equivalent circuit (precise channels)
VA
RS RF RL RSW RAD
++
+
REQ
---------------------------------------------------------------------------
1
2
---LSB
RF
CF
RS
RL
RSW1
CP2
CS
VDD
Sampling
Source
Filter
Current Limiter
EXTERNAL CIRCUIT
INTERNAL CIRCUIT SCHEME
CP1
RAD
Channel
Selection
VA
RS: Source impedance
RF: Filter resistance
CF: Filter capacitance
RL: Current limiter resistance
RSW1: Channel selection switch impedance
RAD: Sampling switch impedance
CP: Pin capacitance (two contributions, CP1 and CP2)
CS: Sampling capacitance
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MPC5604CF1MLH4 | MICROCONTROLLER, PQFP64 |
| MPC5604BF1VLH4 | MICROCONTROLLER, PQFP64 |
| MPC5604CF1MLL6 | MICROCONTROLLER, PQFP100 |
| MPC5604BF1VMG6 | MICROCONTROLLER, PBGA208 |
| MPC5604CF1CLH6R | 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。