COP87L88EK Datasheet, PDF (7/41 Pages) National Semiconductor (TI) – 8-Bit CMOS OTP Microcontrollers with 8k or 32k Memory, Comparator, and Single-slope A/D Capability

Analog Function Block AC and DC Characteristics
V_CC = 5.0V, −40˚C ≤ T_A ≤ +85˚C
Parameter
Conditions
Min
Input Offset Voltage
0.4V < V_IN < V_CC − 1.5V
Input Common Mode Voltage Range
0.4
(Note 10)
V_CC/2 Reference
4.5V < V_CC < 5.5V
0.5 V_CC − 0.04
DC Supply Current for
Comparator (when enabled)
V_CC = 5.5V
Typ
±10
0.5 V_CC
Max
±25
V_CC − 1.5
Units
mV
V
0.5 V_CC + 0.04
V
250
µA
DC Supply Current for
V_CC/2 Reference (when enabled)
DC Supply Current for
Constant Current Source (when enabled)
Constant Current Source
Current Source Variation over
Common Mode Range
V_CC = 5.5V
V_CC = 5.5V
4.5V < V_CC < 5.5V
4.5V < V_CC < 5.5V
Temp = Constant
50
80
µA
200
µA
10
20
40
µA
±2
µA
Current Source Enable Time
1.5
2
µs
Comparator Response Time
100 mV Overdrive,
1
µs
100 pF Load
Note 9: While performance characteristics are given at V_CC = 5.0V, the analog function block will operate over the entire 2.5V–6.0V V_CC range. Accuracy of the
V_CC/2 reference and the constant current source is not guaranteed beyond the specified limits.
Note 10: The device is capable of operating over a common mode voltage range of 0 to V_CC − 1.5V, however increased offset voltage will be observed between 0V
and 0.4V.
DS101133-18
FIGURE 3. MICROWIRE/PLUS Timing
Typical Performance Characteristics (−55˚C ≤ T_A = +125˚C)
DS101133-19
7
DS101133-20
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