LM70_06 Datasheet

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LM70_06
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National Semiconductor [SPI/MICROWIRE 10-Bit plus Sign Digi...
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LM70 SPI/MICROWIRE

鈩?/div>

10-Bit plus Sign Digital Temperature Sensor

February 2006

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 碌A. This mode is useful in systems where low average

power consumption is critical.

The LM70 has 10-bit plus sign temperature resolution

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

of 鈭?5藲C to +150藲C.

The LM70鈥檚 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.

Features

0.25藲C temperature resolution.

Shutdown mode conserves power between temperature

reading

SPI and MICROWIRE Bus interface

MSOP-8 and LLP-8 packages save space

UL Recognized Component

Key Specifications

Supply Voltage

Supply Current

2.65V to 5.5V

operating

shutdown

260 碌A (typ)

490 碌A (max)

12 碌A (typ)

Temperature

鈭?0藲C to 85藲C

鈭?0藲C to 65藲C

鈭?5藲C to 125藲C

鈭?5藲C to 150藲C

卤

2藲C(max)

+1.5/鈭?藲C(max)

+3/鈭?藲C(max)

+3.5/鈭?藲C(max)

Applications

System Thermal Management

Personal Computers

Disk Drives

Office Electronics

Electronic Test Equipment

Accuracy

Simplified Block Diagram

10122301

漏 2006 National Semiconductor Corporation

DS101223

www.national.com

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