8XC196KC/8XC196KC20
A to D CHARACTERISTICS
The A/D converter is ratiometric, so absolute accuracy is dependent on the accuracy and stability of V
REF
.
10-BIT MODE A/D OPERATING CONDITIONS
Symbol Description Min Max Units
T
A
Ambient Temperature Commercial Temp. 0
a
70
§
C
T
A
Ambient Temperature Extended Temp.
b
40
a
85
§
C
V
CC
Digital Supply Voltage 4.50 5.50 V
V
REF
Analog Supply Voltage 4.00 5.50 V
T
SAM
Sample Time 1.0 ms
(1)
T
CONV
Conversion Time 10 20 ms
(1)
F
OSC
Oscillator Frequency (8XC196KC) 8.0 16.0 MHz
F
OSC
Oscillator Frequency (8XC196KC20) 8.0 20.0 MHz
NOTE:
ANGND and V
SS
should nominally be at the same potential, 0.00V.
1. The value of AD
Ð
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 1024 Levels
10 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 1, 2
Feedthrough
b
60 dB 1
V
CC
Power Supply Rejection
b
60 dB 1
Input Series Resistance 750 1.2K X 4
Voltage on Analog Input Pin ANGND
b
0.5 V
REF
a
0.5 V 5, 6
DC Input Leakage 0
g
3.0 mA
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
g
2 mA.
6. Applying voltages beyond these specifications will degrade the accuracy of all channels being converted.
7. All conversions performed with processor in IDLE mode.
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