LM70

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SNIS112G – JUNE 2000 – REVISED MARCH 2013

LM70 SPI/MICROWIRE 10-Bit plus Sign Digital Temperature Sensor

Check for Samples: LM70

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FEATURES

DESCRIPTION

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•

0.25°C Temperature Resolution.

The LM70 is a temperature sensor, Delta-Sigma

•

Shutdown Mode Conserves Power Between

analog-to-digital

converter

with

an

SPI

and

Temperature Reading

MICROWIRE compatible interface available in WSON

•

SPI and MICROWIRE Bus Interface

and VSSOP 8-pin packages. The host can query the

LM70 at any time to read temperature. A shutdown

•

VSSOP-8 and WSON-8 Packages Save Space

mode decreases power consumption to less than 10

•

UL Recognized Component

µA. This mode is useful in systems where low

average power consumption is critical.

APPLICATIONS

The LM70 has 10-bit plus sign temperature resolution

•

System Thermal Management

(0.25°C per LSB) while operating over a temperature

•

Personal Computers

range of

−55°C to +150°C.

•

Disk Drives

The LM70's 2.65V to 5.5V supply voltage range, low

•

Office Electronics

supply current and simple SPI interface make it ideal

for a wide range of applications. These include

•

Electronic Test Equipment

thermal management and protection applications in

hard disk drives, printers, electronic test equipment,

KEY SPECIFICATIONS

and office electronics.

•

Supply Voltage 2.65V to 5.5V

•

Supply Current

–

Operating

–

260

μA (typ)

–

490

μA (max)

–

Shutdown

–

12

μA (typ)

•

Temperature Accuracy

–

−40°C to 85°C, ±2°C(max)

–

−10°C to 65°C, +1.5/−2°C(max)

–

−55°C to 125°C, +3/−2°C(max)

–

−55°C to 150°C, +3.5/−2°C(max)

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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

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PRODUCTION DATA information is current as of publication date.

Copyright © 2000–2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.