
8XC196KD/8XC196KD20
A to D CHARACTERISTICS
The A/D converter is ratiometric, so absolute accuracy is dependent on the accuracy and stability of VREF.
10-BIT MODE A/D OPERATING CONDITIONS
Symbol
Description
Min
Max
Units
TA
Ambient Temperature Commercial Temp.
0
a
70
C
VCC
Digital Supply Voltage
4.50
5.50
V
VREF
Analog Supply Voltage
4.00
5.50
V
ANGND
Analog Ground Voltage
VSS b 0.40
VCC a 0.40
V
TSAM
Sample Time
1.0
m
s(1)
TCONV
Conversion Time
10
20
m
s(1)
FOSC
Oscillator Frequency (8XC196KD)
8.0
16.0
MHz
FOSC
Oscillator Frequency (8XC196KD20)
8.0
20.0
MHz
NOTE:
1. The value of AD_TIME is selected to meet these specifications.
10-BIT MODE A/D CHARACTERISTICS (Over Specified Operating Conditions)
Parameter
Typical(1)
Minimum
Maximum
Units*
Notes
Resolution
1024
Levels
10
Bits
Absolute Error
0
g
3
LSBs
Full Scale Error
0.25 g 0.5
LSBs
Zero Offset Error
0.25 g 0.5
LSBs
Non-Linearity
1.0 g 2.0
0
g
3
LSBs
Differential Non-Linearity Error
l b
1
a
2
LSBs
Channel-to-Channel Matching
g
0.1
0
g
1
LSBs
Repeatability
g
0.25
LSBs
Temperature Coefficients:
Offset
0.009
LSB/ C
Full Scale
0.009
LSB/ C
Differential Non-Linearity
0.009
LSB/ C
Off Isolation
b
60
dB
2, 3
Feedthrough
b
60
dB
2
VCC Power Supply Rejection
b
60
dB
2
Input Series Resistance
750
1.2K
X
4
Voltage on Analog Input Pin
ANGND b 0.5
VREF a 0.5
V
5, 6
DC Input Leakage
0
g
3.0
m
A
Sampling Capacitor
3
pF
NOTES:
An ``LSB'' as used here has a value of approxiimately 5 mV. (See Embedded Microcontrollers and Processors Handbook
for A/D glossary of terms.)
1. These values are expected for most parts at 25 C but are not tested or guaranteed.
2. DC to 100 KHz.
3. Multiplexer Break-Before-Make is guaranteed.
4. Resistance from device pin, through internal MUX, to sample capacitor.
5. These values may be exceeded if the pin current is limited to g2 mA.
6. Applying voltages beyond these specifications will degrade the accuracy of other channels being converted.
7. All conversions performed with processor in IDLE mode.
20
TA
Ambient Temperature
Extended Temp.
-40
+85
°C