In fact a current sink contributor " />
參數(shù)資料
型號(hào): PPC5605BCLU48
廠(chǎng)商: Freescale Semiconductor
文件頁(yè)數(shù): 86/112頁(yè)
文件大?。?/td> 0K
描述: MCU 32BIT 768K 48MHZ
標(biāo)準(zhǔn)包裝: 40
系列: MPC56xx Qorivva
核心處理器: e200z0h
芯體尺寸: 32-位
速度: 48MHz
連通性: CAN,I²C,LIN,SCI,SPI
外圍設(shè)備: POR,PWM,WDT
輸入/輸出數(shù): 149
程序存儲(chǔ)器容量: 768KB(768K x 8)
程序存儲(chǔ)器類(lèi)型: 閃存
EEPROM 大?。?/td> 4K x 16
RAM 容量: 64K x 8
電壓 - 電源 (Vcc/Vdd): 3 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 29x10b,5x12b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 176-LQFP
包裝: 托盤(pán)
Electrical characteristics
MPC5607B Microcontroller Data Sheet, Rev. 7
Freescale Semiconductor
75
In fact a current sink contributor is represented by the charge sharing effects with the sampling capacitance: being CS and Cp2
substantially two switched capacitances, 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+Cp2 equal to 3 pF, a resistance of 330 k is
obtained (REQ = 1 / (fc ×(CS+Cp2)), 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+Cp2) and the sum of RS + RF, 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.
Figure 17. Input equivalent circuit (precise channels)
V
A
R
S
R
F
+
R
EQ
---------------------
1
2
---LSB
RF
CF
RS
RL
RSW1
CP2
CS
VDD
Sampling
Source
Filter
Current Limiter
EXTERNAL CIRCUIT
INTERNAL CIRCUIT SCHEME
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
CP1
RAD
Channel
Selection
VA
相關(guān)PDF資料
PDF描述
MC9S08GW32CLH IC MCU 8BIT 32KB FLASH 64LQFP
PPC5605BCLQ64 MCU 32BIT 768K 64MHZ
MC908QC16CDXE IC MCU 8BIT 16K FLASH 16-SOIC
PPC5605BCLQ48 MCU 32BIT 768K 48MHZ
PPC5604BCLL48 MCU 32BIT 512K 48MHZ
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PPC5605BCLU64 功能描述:MCU 32BIT 768K 64MHZ RoHS:是 類(lèi)別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:MPC56xx Qorivva 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:260 系列:73S12xx 核心處理器:80515 芯體尺寸:8-位 速度:24MHz 連通性:I²C,智能卡,UART/USART,USB 外圍設(shè)備:LED,POR,WDT 輸入/輸出數(shù):9 程序存儲(chǔ)器容量:64KB(64K x 8) 程序存儲(chǔ)器類(lèi)型:閃存 EEPROM 大小:- RAM 容量:2K x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:- 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:68-VFQFN 裸露焊盤(pán) 包裝:管件
PPC5605BECLLR 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:Microcontroller
PPC5605BECLQR 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:Microcontroller
PPC5605BECLUR 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:Microcontroller
PPC5605BEMLLR 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:Microcontroller