參數(shù)資料
型號: SAF-C868-1SR
廠商: INFINEON TECHNOLOGIES AG
元件分類: 微控制器/微處理器
英文描述: 8-BIT, 40 MHz, MICROCONTROLLER, PDSO38
封裝: PLASTIC, TSSOP-38
文件頁數(shù): 60/70頁
文件大小: 1067K
代理商: SAF-C868-1SR
C868
Data Sheet
63
V 0.2, 2002-01
A/D Converter Characteristics
(Operating Condition Parameters)
Parameter
Symbol
Limits
Unit Test Condition
min
max
Analog input voltage
VAIN
VAGND
VAREF
V
1)
VAIN may exceed VAGND or VAREF up to the maximum ratings. However, the conversion result in these
cases will be 00H or FFH, respectively.
Sample time
tS
64*
tSYS
40*
tSYS
32*
tSYS
24*
tSYS
512*
tSYS
320*
tSYS
256*
tSYS
192*
tSYS
ns
Prescaler/32
Prescaler/20
Prescaler/16
Prescaler/12
Conversion cycle time
tADCC
340*
tSYS
214*
tSYS
172*
tSYS
130*
tSYS
788*
tSYS
494*
tSYS
396*
tSYS
298*
tSYS
ns
Prescaler/32
Prescaler/20
Prescaler/16
Prescaler/12
Total unadjusted error
TUE
±2LSB V
AGND ≤ VAIN ≤ VAREF
2)
2) T
UE (max.) is tested at – 40 ≤ TA ≤ 85 °C; VDD ≤ 3.6 V; VAREF ≤ VDDP + 0.1 V and VSSP ≤ VAGND. It is
guaranteed by design characterization for all other voltages within the defined voltage range.
Internal resistance of
reference voltage
source
RAREF
––
k
3)5)
3) During the conversion the ADC’s capacitance must be repeatedly charged or discharged. The internal
resistance of the reference source must allow the capacitance to reach their final voltage level within the
indicated time. The maximum internal resistance results from the programmed conversion timing.
Internal resistance of
analog source
RASRC
––
k
4)5)
4) During the sample time the input capacitance C
AIN must be charged/discharged by the external source. The
internal resistance of the analog source must allow the capacitance to reach their final voltage level within
tS.
After the end of the sample time
tS, changes of the analog input voltage have no effect on the conversion result.
ADC input capacitance CAIN
50
pF
5)
5) Not 100% tested, but guaranteed by design characterization.
Note:
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