LM70

SNIS112G – JUNE 2000 – REVISED MARCH 2013

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Absolute Maximum Ratings

(1)

Supply Voltage

−0.3V to 6.0V

Voltage at any Pin

5 mA

20 mA

Storage Temperature

−65°C to +150°C

Soldering Information, Lead Temperature

Vapor Phase (60 seconds)

215°C

Infrared (15 seconds)

220°C

Human Body Model

3000V

Machine Model

300V

(1)

Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. DC and AC electrical specifications do not

apply when operating the device beyond its rated operating conditions.

(2)

mA. The 20 mA maximum package input current rating limits the number of pins that can safely exceed the power supplies with an input

current of 5 mA to four.

(3)

See the section titled “Surface Mount” found in a current Linear Data Book for other methods of soldering surface mount devices.

(4)

Human body model, 100 pF discharged through a 1.5 k

Ω resistor. Machine model, 200 pF discharged directly into each pin.

Operating Ratings

Specified Temperature Range

−55°C to +150°C

+2.65V to +5.5V

(1)

The life expectancy of the LM70 will be reduced when operating at elevated temperatures. LM70

ambient) when attached to a printed circuit board with 2 oz. foil is summarized in the table below:Device Number LM70CILD Thermal

Resistance (

θJA), 51.3°C/W, Device Number LM70CIMM Thermal Resistance (θJA), 200°C/W

Temperature-to-Digital Converter Characteristics

Unless otherwise noted, these specifications apply for V

5

LM70-5

LM70-3

Units

Parameter

Test Conditions

(Limit)

+1.5/

−2.0

+1.5/

−2.0

°C (max)

±2.0

±2.0

°C (max)

+3.0/

−2.0

+3.0/

−2.0

°C (max)

+3.5/

−2.0

+3.5/

−2.0

°C (max)

Resolution

11

Bits

0.25

°C

Temperature Conversion Time

140

210

210

ms (max)

Quiescent Current

Serial Bus Inactive

260

490

490

μA (max)

Serial Bus Active

260

μA

Shutdown Mode

12

μA

(1)

temperature ranges of

−10°C to +65°C, −40°C to +85°C, −55°C to +125°C and −55°C to +150°C include error induced by power supply

from the nominal value.

(2)

(3)

Limits are guaranteed to AOQL (Average Outgoing Quality Level).

(4)

This specification is provided only to indicate how often temperature data is updated. The LM70 can be read at any time without regard

to conversion state (and will yield last conversion result). A conversion in progress will not be interrupted. The output shift register will be

updated at the completion of the read and a new conversion restarted.

4

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