SAB80C515A-5 Datasheet, PDF (98/108 Pages) Siemens Semiconductor Group – 8-Bit CMOS Single-Chip Microcontroller Family

SAB 80C515A/83C515A-5
A/D Converter Characteristics
V_CC = 5 V + 10 %, – 15 %; V _SS = 0 V
V_AREF = V_CC ± 5 %; V_AGND = V_SS ± 0.2 V;
T _A = 0 to 70 ˚C for the SAB 80C515A/83C515A-5
T _A = – 40 to 85 ˚C for the SAB 80C515A-T3/83C515A-5-T3
Parameter
Symbol
Analog input capacitance C_I
Sample time
T_S
(inc. load time)
Conversion time
T_C
(inc. sample time)
Total unadjusted error TUE
V_AREF supply current
I_REF
Limit values
Unit
min. typ. max.
25 70
pF
4 t _CY ¹⁾ µs
Test condition
2)
14 t _CY ¹⁾ µs
3)
±2
± 20
LSB
µA
V_AREF = V_CC
V_AGND = V_SS
1)
t _CY = (8*2 ^ADCL) /f_OSC;
(t_CY = 1/f_ADC;
ADCL
f_ADC = f_OSC/(8*2 ))
2) _{This parameter specifies the time during the input capacitance CI, can be charged/discharged by the}
external source. It must be guaranteed, that the input capacitance C_I,, is fully loaded within this time.
4TCY is 2 µs at the f_OSC= 16 MHz. After the end of the sample time T_S, changes of the analog input
voltage have no effect on the conversion result.
3) _{This parameter includes the sample time T S. 14TCY is 7 µs at fOSC = 16 MHz.}
Semiconductor Group
6-46