Rainbow Electronics DS2890 - Manual (Page 26)

DS2890
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Notes:
1. Voltage is referenced to ground.
2. Valid at 25
o C only.
3. Wiper resistance is a function of operating characteristics. See section “POTENTIOMETER WIPER
RESISTANCE AND CHARGE PUMP CONSIDERATIONS” for R
WIPER
characteristics.
4. Absolute linearity is a measure of wiper output voltage versus expected wiper voltage as determined
by wiper position.
5. Relative linearity is a measure of the output deviation between successive potentiometer tap points.
DC ELECTRICAL CHARACTERISTICS
2.8V £ V
PUP
£ 6.0V, -40°C £ T
A
£ +85°C
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
1-Wire Input High V
IH
2.2 V 1
1-Wire Input Low V
IL
-0.3 0.8 V 1,2
1-Wire Output High V
OH
V
PUP
6.0 V 1,3
1-Wire Output Low @ 4 mA V
OL
0.4 V 1
1-Wire Input Leakage Current I
L
5 mA 4
V
DD
Input Current, Charge Pump
OFF
I
DD
4.0 mA 5
V
DD
Input Current, charge Pump
ON
I
DD
2.0 mA 6
Notes:
1. Voltages are referenced to ground.
2. Under certain low voltage conditions V
ILMAX
may have to be reduced to as much as 0.5V to always
guarantee a presence pulse.
3. V
PUP
is the external 1-Wire pull-up voltage.
4. Input load is to ground.
5. Input current when an auxiliary V
DD
supply is used and the charge pump is turned OFF.
6. Input current when an auxiliary V
DD
supply is used and the charge pump is turned ON.