Rainbow-electronics DS1859 Bedienungsanleitung Seite 3

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DS1859
Dual, Temperature-Controlled Resistors with
Internally Calibrated Monitors
_____________________________________________________________________ 3
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Thermometer Error T
ERR
-40°C to +95°C ±3.0 °C
DIGITAL THERMOMETER
(V
CC
= 2.97V to 5.5V, T
A
= -40°C to +95°C, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
EEPROM Writes +70°C
50,000
NONVOLATILE MEMORY CHARACTERISTICS
(V
CC
= 2.97V to 5.5V)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Input Resolution VMON 610 µV
Supply Resolution V
CC
1.6 mV
Input/Supply Accuracy
(MON1, MON2, MON3, V
CC
)
A
CC
At factory setting 0.25 0.5
% FS
(full scale)
Update Rate for MON1, MON2,
MON3, Temp, or V
CC
t
frame
30 45 ms
Input/Supply Offset
(MON1, MON2, MON3, V
CC
)
V
OS
(Note 14) 0 5 LSB
ANALOG VOLTAGE MONITORING
(V
CC
= 2.97V to 5.5V, T
A
= -40°C to +95°C, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Position 00h Resistance (50k)T
A
= +25°C 0.65 1.0 1.35 k
Position FFh Resistance (50k)T
A
= +25°C 40 50 60 k
Position 00h Resistance (20k)T
A
= +25°C 0.20 0.40 0.55 k
Position FFh Resistance (20k)T
A
= +25°C 16 20 24 k
Absolute Linearity (Note 6) -2 +2 LSB
Relative Linearity (Note 7) -1 +1 LSB
Temperature Coefficient (Note 8) 50 ppm/°C
ANALOG RESISTOR CHARACTERISTICS
(V
CC
= 2.97V to 5.5V, T
A
= -40°C to +95°C, unless otherwise noted.)
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