Rainbow-electronics DS1845 Manuel d'utilisateur télécharger pdf (Page 10)

DS1845

10 of 13

DC ELECTRICAL CHARACTERISTICS (-40°C to +85°C; V

=2.7V to 5.5V)

PARAMETER SYMBOL CONDITION MIN TYP MAX UNITS NOTES

Supply Current

Active

0.5 mA 16,17

Input Leakage I

-1 +1 µA

Wiper Resistance

500

250

1000

500

Ω

Wiper Current I

1mA

Input Logic 1 V

0.7 V

+0.5 V 1,2

Input Logic 0 V

GND-0.5 0.3 V

V 1,2

Input Logic levels

A0, A1, A2

Input Logic 1

Input Logic 0

0.7 V

GND-0.5

+0.5

0.3 V

Input Current each

I/O pin

0.4<V

I/O

<0.9V

-10 +10 µA

Standby Current

stby

40 µA

OL1

3 mA sink

current

0.0 0.4 VLow Level Output

Voltage (SDA)

OL2

6 mA sink

current

0.0 0.6 V

I/O Capacitance C

I/O

10 pF

Pulse width of spikes

which must be

suppressed by the

input filter

Fast Mode 0 50 ns

WP Internal Pull Up

Resistance, R

40 65 100 kΩ

ANALOG RESISTOR CHARACTERISTICS (-40°C to +85°C; V

=2.7V to 5.5V)

PARAMETER SYMBOL CONDITION MIN TYP MAX UNITS NOTES

End-to-End

Resistance

-20 +20 % 19

Absolute Linearity -0.5 +0.5 LSB 13

Relative Linearity -0.25 +0.25 LSB 14

-3 dB Cutoff

frequency

cutoff

kHz 12

Temperature

Coefficient

750

ppm/°C

1 2 ... 5 6 7 8 9 10 11 12 13

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Rainbow-electronics DS1845 Manuel d'utilisateur Page 10

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