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参数资料
| 型号： | MPC5602BEMLQ |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, FLASH, 60 MHz, MICROCONTROLLER, PQFP144 |
| 封装： | 20 X 20 MM, 1.40 MM HEIGHT, 0.50 MM PITCH, LQFP-144 |
| 文件页数： | 49/72页 |
| 文件大小： | 971K |
| 代理商： | MPC5602BEMLQ |
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Electrical characteristics
MPC5604B/C Microcontroller Data Sheet, Rev. 4
Freescale Semiconductor
53
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 kΩ 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
V
A
R
S
R
F
R
L
R
SW
R
AD
++
+
R
EQ
---------------------------------------------------------------------------
1
2
---LSB
<
Because
of
an
order
from
the
United
States
International
Trade
Commission,
BGA-packaged
product
lines
and
part
numbers
indicated
here
currently
are
not
available
from
Freescale
for
import
or
sale
in
the
United
States
prior
to
September
2010:
MPC5604BxMG
products
in
208
MAPBGA
packages
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MPC5602BEMLQR | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:MPC5604B/C Microcontroller Data Sheet |
| MPC5602BEMLU | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Microcontroller |
| MPC5602BEMMG | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Microcontroller |
| MPC5602BEVLL | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:MPC5604B/C Microcontroller Data Sheet |
| MPC5602BEVLLR | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:MPC5604B/C Microcontroller Data Sheet |
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