80C196MH Datasheet, PDF (35/41 Pages) Intel Corporation – 8XC196MH INDUSTRIAL MOTOR CONTROL CHMOS MICROCONTROLLER

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8XC196MH INDUSTRIAL MOTOR CONTROL CHMOS MICROCONTROLLER
AC CHARACTERISTICS — A/D CONVERTER
Table 16. 10-bit A/D Operating Conditions (1)
Symbol
Description
Min
Max
Units
Notes
T_A
Ambient Temperature
– 40
+ 85
°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
20.0
µs
3
F_OSC
Oscillator Frequency
8
16
MHz
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 17. 10-bit Mode A/D Characteristics Over Specified Operating Conditions (1)
Parameter
Typical (3)
Min
Max
Units (2) Notes
Resolution
1024
10
1024
10
Levels
Bits
Absolute Error
0
±3
LSBs
Full-scale Error
0.25 ± 0.5
LSBs
Zero Offset Error
0.25 ± 0.5
LSBs
Nonlinearity
1.0 ± 2.0
±3
LSBs
Differential Nonlinearity
– 0.75
+ 0.75
LSBs
Channel-to-channel Matching
± 0.1
0
±1
LSBs
Repeatability
± 0.25
0
LSBs
NOTES:
1. Testing is performed with V_REF = 5.12 V and F_OSC = 16 MHz.
2. An LSB, as used here, has a value of approximately 5 mV.
3. Typical values are based on a limited number of samples and are not guaranteed. Operating conditions
for typical values are room temperature and V_REF = V_CC = 5.5 V.
4. DC to 100 KHz.
5. Multiplexer break-before-make guaranteed.
6. Resistance from device pin, through internal multiplexer, to sample capacitor.
7. These values may be exceeded if the pin current is limited to ± 2mA.
8. Applying voltage beyond these specifications will degrade the accuracy of other channels being con-
verted.
9. All conversions were performed with processor in idle mode.
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