参数资料
型号: MB96F345DSPMC-GSE2
元件分类: 微控制器/微处理器
英文描述: 16-BIT, FLASH, 56 MHz, MICROCONTROLLER, PQFP100
封装: 14 X 14 MM, 1.70 MM HEIGHT, 0.50 MM PITCH, PLASTIC, LQFP-100
文件页数: 114/116页
文件大小: 3360K
代理商: MB96F345DSPMC-GSE2
MB96340 Series
FME-MB96340 rev 9
97
To satisfy the A/D conversion precision standard, the relationship between the external impedance and minimum
sampling time must be considered and then either the resistor value and operating frequency must be adjusted
or the external impedance must be decreased so that the sampling time (Tsamp) is longer than the minimum
value. Usually, this value is set to 7
τ, where τ = RC. If the external input resistance (Rext) connected to the analog
input is included, the sampling time is expressed as follows:
Tsamp [min] = 7
× (Rext + 2.6k) × C for 4.5 ≤ AVcc ≤ 5.5
Tsamp [min] = 7
× (Rext + 12.1k) × C for 3.0 ≤ AVcc ≤ 4.5
If the sampling time cannot be sufcient, connect a capacitor of about 0.1
F to the analog input pin.
About the error
The accuracy gets worse as |AVRH - AVRL| becomes smaller.
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