LM70CIMM5 National Semiconductor, LM70CIMM5 Datasheet

LM70CIMM5

Manufacturer Part Number

LM70CIMM5

Description

Manufacturer

National Semiconductor

Datasheet

1.LM70CIMM5.pdf (14 pages)

Specifications of LM70CIMM5

Date_code

03+

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LM70

SPI/MICROWIRE 10-Bit plus Sign Digital Temperature

Sensor

General Description

The LM70 is a temperature sensor, Delta-Sigma analog-to-

digital converter with an SPI and MICROWIRE compatible

interface available in LLP and MSOP 8-pin packages. The

host can query the LM70 at any time to read temperature. A

shutdown mode decreases power consumption to less than

10 µA. This mode is useful in systems where low average

power consumption is critical.

The LM70 has 10-bit plus sign temperature resolution

(0.25˚C per LSB) while operating over a temperature range

of −55˚C to +150˚C.

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

current and simple SPI interface make it ideal for a wide

range of applications. These include thermal management

and protection applications in hard disk drives, printers, elec-

tronic test equipment, and office electronics.

Applications

n System Thermal Management

n Personal Computers

n Disk Drives

n Office Electronics

n Electronic Test Equipment

Simplified Block Diagram

DS101223

Features

n 0.25˚C temperature resolution.

n Shutdown mode conserves power between temperature

n SPI and MICROWIRE Bus interface

n MSOP-8 and LLP-8 packages save space

n UL Recognized Component

Key Specifications

reading

Accuracy

Supply Voltage

Supply Current

Temperature

−55˚C to 125˚C

−55˚C to 150˚C

−40˚C to 85˚C

−10˚C to 65˚C

10122301

shutdown

operating

February 2006

+1.5/−2˚C(max)

+3.5/−2˚C(max)

www.national.com

2.65V to 5.5V

490 µA (max)

+3/−2˚C(max)

260 µA (typ)

12 µA (typ)

2˚C(max)

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