Rainbow-electronics DS1821 Bedienungsanleitung PDF herunterladen (Seite 14)

DS1821

Page 14 of 17

ABSOLUTE MAXIMUM RATINGS*

Voltage on any pin relative to ground –0.5V to +7.0V

Operating temperature –55°C to +125°C

Storage temperature –55°C to +125°C

Soldering temperature See-JTD-020A Specification

*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 this specification is not implied. Exposure to absolute

maximum rating conditions for extended periods of time may affect reliability.

DC ELECTRICAL CHARACTERISTICS (-55°C to +125°C; V

=2.7V to 5.5V)

PARAMETER SYMBOL CONDITION MIN TYP MAX UNITS NOTES

Supply Voltage V

+2.7 +5.5 1

ERR

0°C to +85°C

= 3.6V to 5.5V

±1 °C 2,3,4Thermometer

Error

-55°C to +125°C

= 3.6V to 5.5V

See Typical Curve (Figure 11)

DQ Logic Low V

-0.3 +0.8 V 1,5

DQ Logic High V

+2 The lower of

+5.5

+ 0.3

V 1,6

Sink Current I

= 0.4V

= 3.6V to 5.5V

4mA1

Standby Current I

-55°C to +85°C 1 3

µA

Active Current I

= 5V 500 1000

µA

DQ Input

Current

5µA9

NOTES:

1. All voltages are referenced to ground.

2. Thermometer error reflects the sensor accuracy as tested during calibration.

3. See typical performance curve in Figure 11 for specification limits outside the 0°C to +85°C range.

4. For T<0°C, accuracy degrades by 0.5°C/V for V

<4.3V.

5. Logic low voltages are specified at a sink current of 4 mA.

6. Logic high voltages are specified at a source current of 1 mA.

7. Standby current is typically 5 µA at 125°C.

8. Active current refers to supply current during active temperature conversions or EEPROM writes.

9. DQ line is high (“hi-Z” state).

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