
TC818A
DS21475B-page 4
2002 Microchip Technology Inc.
1.0
ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings*
Supply Voltage .......................................................15V
Analog Input Voltage ..................................V
CC
to V
SS
Reference Input Voltage..............................V
CC
to V
SS
Voltage at Pin 43 ................................. Common ±0.7V
Power Dissipation ............................................800mW
Operating Temperature Range................0°C to +70°C
Storage Temperature Range..............-65°C to +150°C
*Stresses above those listed under "Absolute Maximum
Ratings" may cause permanent damage to the device. These
are stress ratings only and functional operation of the device
at these or any other conditions above those indicated in the
operation sections of the specifications is not implied.
Exposure to Absolute Maximum Rating conditions for
extended periods may affect device reliability.
TC818A ELECTRICAL SPECIFICATIONS
Electrical Characteristics:
V
A
= 9V, T
A
= +25°C, unless otherwise specified.
Symbol
Parameter
Min
Typ
Max
Unit
Test Conditions
Zero Input Reading
-0000
0000
+0000
Digital
Reading
Digital
Reading
Digital
Reading
Counts
200mV Range without 10M
Resistor
200mV Range with 10M
Resistor
20mA and 200mA Range
-0001
—
+0001
-0000
0000
+0000
RE
Rollover Error
—
—
±1
200mV Range without 10M
Resistor
200mV Range with 10M
Resistor
20mA and 200mA Range
Best Case Straight Line
—
—
±3
—
—
—
—
—
—
—
—
—
—
20
±1
±5
570
±1
±1
10
—
—
—
660
NL
I
IN
E
N
Linearity Error
Input Leakage Current
Input Noise
AC Frequency Error
Count
pA
μ
V
P-P
%
%
mV
BW = 0.1 to 10Hz
40 to 500Hz
Error 40 to 2000Hz
Excludes 200
Range
Open Circuit Voltage for Ohm
Measurements
Open Circuit Voltage for LO Ohm
Measurements
Analog Common Voltage
Common Voltage Temperature
Coefficient
Display Multiplex Rate
Low Logic Input
—
285
350
mV
Excludes 200
Range
V
COM
V
CTC
2.8
—
3
—
3.3
50
V
(V
CC
- V
COM
)
ppm/°C
—
—
100
—
—
1
Hz
μ
A
V
IL
20mA, AC, I, LOW
, HOLD
Range, -MEM, OHMs
(Relative to DGND, Pin 58)
20mA, AC, I, LOW
, HOLD
Range, -MEM, OHMs
(Relative to DGND, Pin 58)
ANNUNC, DEINT: I
L
= 100
μ
A
ANNUNC, DEINT: I
L
= 100
μ
A
Logic 1 Pull-up Current
—
25
—
V
V
OL
V
OH
Low Logic Output
High Logic Output
Buzzer Drive Frequency
Low Battery Flag Voltage
Operating Supply Current
—
—
—
6.3
—
DGND +0.1
V
CC
- 0.1
4
6.6
0.8
—
—
—
7
1.5
V
V
kHz
V
mA
V
CC
to V
SSA