- 您现在的位置：买卖IC网 > PDF目录45205 > MC33780EGR2 (FREESCALE SEMICONDUCTOR INC) SPECIALTY MICROPROCESSOR CIRCUIT, PDSO16 PDF资料下载
参数资料
| 型号： | MC33780EGR2 |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | SPECIALTY MICROPROCESSOR CIRCUIT, PDSO16 |
| 封装： | 1.27 MM PITCH, ROHS COMPLIANT, SOIC-16 |
| 文件页数： | 8/37页 |
| 文件大小： | 851K |
| 代理商： | MC33780EGR2 |
第1页第2页第3页第4页第5页第6页第7页当前第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页
Analog Integrated Circuit Device Data
16
Freescale Semiconductor
33780
FUNCTIONAL DESCRIPTIONS
FUNCTIONAL INTERNAL BLOCK DESCRIPTION
The DSIF signal controls the state of the drivers, enabling
the Idle drivers or Signal drivers as is appropriate. A
comparator in the Control block compares the DnL output
voltage with the internal Signal high voltage to determine the
transition from Idle driver to Signal driver. The overvoltage
signal modifies the driver characteristics. This is described in
more detail in the Load Dump Operation section.
The overtemperature signal is also applied to this block.
The Differential Signal Generation block converts the
DSIS signal to the DBUS differential signal voltage levels.
This differential signal is buffered and slew rate controlled by
the Signal drivers. This block is active in all driver modes.
A special requirement of the differential bus is to maintain
a low common mode voltage. This is especially important
during the Idle to Signal transition in order to produce a
smooth changeover to the Signal driver. This is accomplished
by monitoring the common mode voltage and modifying the
Idle driver slew rates. This is the function of the Common
Mode Correction block. An additional feature to make a
smooth changeover and minimize undershoot is to reduce
the slew rate as the changeover point is approached. This
block is not illustrated in Figure 10.
A sense resistor between the Signal driver and the DnH
output detects the Slave device response current. A
comparator (Comp.) generates the signal DSIR that is
supplied to the logic.
The comparator consists of a sense amplifier with offset
(VOS), a filter capacitor and logic gate with buffers to produce
the logic signal (DSIR). The sense amplifier is a ‘gm’ stage
that amplifies the voltage across the sense resistor (RS) to
produce an output current that charges and discharges a filter
capacitor. The voltage across the filter capacitor is compared
with the threshold voltage of the logic gate to produce the
output signal. The voltage across the filter capacitor is
clamped between VCC and ground. See Figure 11.
Figure 11. Receive Filter
Definitions
C = value of filter capacitor = 2.0 pF
VTH = threshold of logic gate = VCC/2 = 2.5 V
A = current gain from sense resistor to filter capacitor =
IO/IBUS = 3.0 A/mA (the amplifier saturates with an
output current of ±40
A)
IBUS[mA] = bus response current.
ITH[mA] = response current threshold = VOS/RS = 6
The filter delay time is given by:
t[
s] = (C * V
TH) / A (IBUS - ITH) = 1.7 / (IBUS- ITH)
The filter characteristic can also be expressed as the
product of the overdrive current (IBUS-ITH) and the duration of
the interference pulse, which must be less than 1.7
s * mA
for the interference to be filtered.
DnH
DSIR
IBUS
RS
VOS
IO
C
gm
VTH
相关PDF资料 |
PDF描述 |
|---|---|
| MCZ33780EG | SPECIALTY MICROPROCESSOR CIRCUIT, PDSO16 |
| MC3S12Q64CFA8 | 16-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP48 |
| MC3S12Q128VPB16 | 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP52 |
| MC9S12Q32MPB16 | 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP52 |
| MC3S12Q128CFA16 | 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP48 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MC33790DW | 功能描述:IC DSI 2-CHAN INTERFACE 16-SOIC RoHS:否 类别:集成电路 (IC) >> 接口 - 传感器和探测器接口 系列:- 其它有关文件:Automotive Product Guide 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:74 系列:- 类型:触控式传感器 输入类型:数字 输出类型:数字 接口:JTAG，串行 电流 - 电源:100µA 安装类型:表面贴装 封装/外壳:20-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:20-TSSOP 包装:管件 |
| MC33790HEG | 功能描述:接口 - 专用 DISTRIB SYS INTRFC RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
| MC33790HEGR2 | 功能描述:接口 - 专用 DISTRIB SYS INTRFC RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
| MC33793D | 功能描述:IC DSI SLAVE FOR R-SENSE 16-SOIC RoHS:否 类别:集成电路 (IC) >> 接口 - 传感器和探测器接口 系列:- 其它有关文件:Automotive Product Guide 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:74 系列:- 类型:触控式传感器 输入类型:数字 输出类型:数字 接口:JTAG，串行 电流 - 电源:100µA 安装类型:表面贴装 封装/外壳:20-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:20-TSSOP 包装:管件 |
| MC33793DR2 | 功能描述:IC DSI SLAVE FOR R-SENSE 16-SOIC RoHS:否 类别:集成电路 (IC) >> 接口 - 传感器和探测器接口 系列:- 其它有关文件:Automotive Product Guide 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:74 系列:- 类型:触控式传感器 输入类型:数字 输出类型:数字 接口:JTAG，串行 电流 - 电源:100µA 安装类型:表面贴装 封装/外壳:20-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:20-TSSOP 包装:管件 |
发布紧急采购，3分钟左右您将得到回复。