80C196EA Datasheet, PDF (37/46 Pages) Intel Corporation – CHMOS 16-BIT MICROCONTROLLER

8xC196EA — AUTOMOTIVE
6.7.1 AC CHARACTERISTICS — A/D CONVERTER, 10-BIT MODE
Table 12. 10-bit A/D Operating Conditions (1)
Symbol
Description
Min
Max
Units
Notes
T_C
Case Temperature
– 40
+ 125
°C
V_CC
Digital Supply Voltage
4.50
5.50
V
V_REF
Analog Supply Voltage
4.50
5.50
V
2
T_SAM
Sample Time
1.0
µs
3
T_CONV
Conversion Time
10.0
15.0
µs
3
NOTES:
1. ANGND and V_SS should nominally be at the same potential.
2. V_REF must not exceed V_CC by more than + 0.5 V because V_REF supplies both the resistor ladder and
the analog portion of the converter and input port pins.
3. Program the AD_TIME register to meet the T_SAM and T_CONV specifications.
Table 13. 10-bit Mode A/D Characteristics Over Specified Operating Conditions (7) (Sheet 1 of 2)
Parameter
Typical (2)
Min
Max
Units (1) Notes
Resolution
1024
10
1024
10
Levels
Bits
Absolute Error
0
± 3.0
LSBs
Full-scale Error
0.25 ± 0.5
LSBs
Zero Offset Error
0.25 ± 0.5
LSBs
Nonlinearity
1.0 ± 2.0
± 3.0
LSBs
Differential Nonlinearity
– 0.75
+ 0.75
LSBs
Channel-to-channel Matching
± 0.1
0
± 1.0
LSBs
Repeatability
± 0.25
0
LSBs
Temperature Coefficients:
Offset
Full-scale
Differential Nonlinearity
0.009
0.009
0.009
LSB/C
LSB/C
LSB/C
Off-isolation
– 60
dB
2, 3, 4
NOTES:
1. An LSB, as used here, has a value of approximately 5 mV.
2. Most parts will meet these values at 25°C, but they are not tested or guaranteed.
3. DC to 100 KHz.
4. Multiplexer break-before-make guaranteed.
5. Resistance from device pin, through internal multiplexer, to sample capacitor.
6. Applying voltage beyond these specifications will degrade the accuracy of other channels being con-
verted.
7. All conversions were performed with processor in idle mode.
8. 100 mV < V_IN < V_REF – 100 mV.
ADVANCE INFORMATION
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