參數資料
型號: MB90F372PMT-G
元件分類: 微控制器/微處理器
英文描述: 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP144
封裝: 0.40 MM PITCH, PLASTIC, LQFP-144
文件頁數: 34/153頁
文件大?。?/td> 2503K
代理商: MB90F372PMT-G
MB90370 Series
129
7.
Notes on Using A/D Converter
Select the output impedance value for the external circuit of analog input according to the following conditions.
Output impedance values of the external circuit of 4 k
or lower are recommended.
When capacitors are connected to external pins, the capacitance of several thousand times the internal capacitor
value is recommended to minimized the effect of voltage distribution between the external capacitor and internal
capacitor.
When the output impedance of the external circuit is too high, the sampling period for analog voltages may not
be sufficient.
Error
The smaller the | AVR - AVSS |, the greater the error would become relatively.
8.
D/A Electrical Characteristics
(VCC
= AVCC = CVCC = 3.0 V to 3.6V, VSS = AVSS = CVSS = 0.0 V, TA = 40 °C to +85 °C)
* : With load capacitance is 20 pF.
Parameter
Symbol Pin name
Condition
Value
Unit
Remarks
Min.
Typ.
Max.
Resolution
8
bit
Differential linearity error
±0.9
LSB
Non-linearity error
±1.5
LSB
Conversion time
0.6
s
*
Analog output impedance
2.0
2.9
3.8
k
Power supply
IDVR
AVCC
460
A
Current
IDVRS
AVCC
0.1
A
D/A stops
Comparator
C
Analog input
Equipment of analog input circuit model
Note: Listed values must be considered as standards.
C : about 32.3 pF
Sampling and hold circuit
R
R : about 1.9 k
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