83C166 Siemens Semiconductor Group, 83C166 Datasheet - Page 33

• Manufacturer Part Number: 83C166
• Description: 16-Bit CMOS Single-Chip Microcontroller
• Manufacturer: Siemens Semiconductor Group

A/D Converter Characteristics
V
T
T
4.0 V
Parameter
Analog input voltage range
Sample time
Conversion time
Total unadjusted error
Internal resistance of reference
voltage source
Internal resistance of analog
source
ADC input capacitance
Notes
1)
2)
3)
4)
5)
6)
7)
Semiconductor Group
A
A
CC
V
cases will be X000
During the sample time the input capacitance C
internal resistance of the analog source must allow the capacitors to reach their final voltage level within t
After the end of the sample time t
The value for the sample clock is t
This parameter includes the sample time t
result register with the conversion result.
The value for the conversion clock is t
This parameter depends on the ADC control logic. It is not a real maximum value, but rather a fixum.
TUE is tested at V
other voltages within the defined voltage range.
During the conversion the ADC’s capacitance must be repeatedly charged or discharged. The internal
resistance of the reference voltage source must allow the capacitors to reach their respective voltage level
within t
Not 100% tested, guaranteed by design characterization.
= 0 to +70 ˚C
= -40 to +85 ˚C
= 5 V
AIN
may exceed V
V
CC
AREF
. The maximum internal resistance results from the CPU clock period.
10 %;
V
CC
+0.1 V;
AREF
AGND
H
or X3FF
V
for SAB 83C166-5M, SAB 80C166-M
for SAB 83C166-5M-T3, SAB 80C166-M-T3
SS
= 5.0V, V
or V
= 0 V
V
AREF
H
SS
, respectively.
-0.1 V
AGND
S
up to the absolute maximum ratings. However, the conversion result in these
SC
, changes of the analog input voltage have no effect on the conversion result.
= TCL * 32.
CC
Symbol
V
t
t
TUE CC –
R
R
C
= 0 V, V
S
C
AIN
AREF
ASRC
V
AIN
= TCL * 32.
S
AGND
, the time for determining the digital result and the time to load the
CC –
CC –
CC –
SR
SR –
SR –
CC
I
V
= 4.8 V. It is guaranteed by design characterization for all
min.
V
can be charged/discharged by the external source. The
32
SS
AGND
+0.2 V
Limit Values
max.
V
2
10
t
t
- 0.25
t
- 0.25
50
S
CC
S
AREF
t
2
+ 4TCL
/ 500
SC
t
/ 250
CC
+
Unit
V
LSB
k
k
pF
SAB 80C166/83C166
1)
2) 4)
3) 4)
5)
t
t
7)
Test Condition
CC
S
in [ns]
in [ns]
2) 7)
6) 7)
S
.