Rainbow-electronics DS1857 Bedienungsanleitung PDF herunterladen (Seite 3)

DS1857

Dual Temperature-Controlled Resistors with

External Temperature Input and Monitors

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PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

EXTTMP Input Voltage

EXTTMP

1.779

Conversion Resolution

∆V

EXTTMP

625 µV

Conversion Accuracy

EXTTMP

(Note 9)

12.8

EXTERNAL TEMPERATURE

= 3.0V to 5.5V, T

= -40°C to +95°C, unless otherwise noted.)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX

UNITS

Input Resolution

∆VMON 610

µV

Supply Resolution ∆V

1.6 mV

Input/Supply Accuracy A

0.25 0.5

% FS

(full scale)

Update Rate for MON1, MON2,

Temp, or V

frame

20 30 ms

ANALOG VOLTAGE MONITORING

= 3.0V to 5.5V, T

= -40°C to +95°C, unless otherwise noted.)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX

UNITS

Position 00h Resistance T

= +25°C

0.70

1.0

1.25

kΩ

Position FFh Resistance T

= +25°C 40 50 60 kΩ

Absolute Linearity (Note 6) -2 +2 LSB

Relative Linearity (Note 7) -1 +1 LSB

Temperature Coefficient (Note 8) 50

ppm/°C

High-Z Resistor Current I

RHIZ

HIZ

= V

0.1 µA

ANALOG RESISTOR CHARACTERISTICS

= 3.0V to 5.5V, T

= -40°C to +95°C, unless otherwise noted.)

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