Datasheet > LM73

LM73

更新时间： 2024-11-19 05:42:23

品牌	Logo	应用领域
美国国家半导体 - NSC		传感器温度传感器
页数	文件大小	规格书
18页	733K
描述
2.7V, SOT-23, 11-to-14 Bit Digital Temperature Sensor with 2-Wire Interface

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LM73 数据手册

July 2006

LM73

2.7V, SOT-23, 11-to-14 Bit Digital Temperature Sensor

with 2-Wire Interface

General Description

Key Specifications

The LM73 is an integrated, digital-output temperature sensor

featuring an incremental Delta-Sigma ADC with a two-wire

interface that is compatible with the SMBus and I²C^®inter-

faces. The host can query the LM73 at any time to read

temperature. Available in a 6-pin SOT-23 package, the LM73

occupies very little board area while operating over a wide

temperature range (-40˚C to 150˚C) and providing 1.0˚C

accuracy from -10˚C to 80˚C. The user can optimize be-

tween the conversion time and the sensitivity of the LM73 by

programming it to report temperature in any of four different

resolutions. Defaulting to 11-bit mode (0.25˚C/LSB), the

LM73 measures temperature in a maximum time of 14 ms,

making it ideal for applications that require temperature data

very soon after power-up. In its maximum resolution, 14-bit

mode (0.03125˚C/LSB), the LM73 is optimized to sense very

small changes in temperature.

Supply Voltage

2.7V to 5.5V

320 µA (typ)

495 µA (max)

8 µA (max)

1.9 µA (typ)

1.0˚C (max)

1.5˚C (max)

2.0˚C (max)

0.25˚C to

Supply Current

operating

shutdown

Temperature

Accuracy

−10˚C to 80˚C

−25˚C to 115˚C

−40˚C to 150˚C

Resolution

0.03125˚C

Conversion Time

11-bit (0.25˚C)

14 ms (max)

14-bit (0.03125˚C) 112 ms (max)

A single multi-level address line selects one of three unique

device addresses. An open-drain ALERT output goes active

when the temperature exceeds a programmable limit. Both

the data and clock lines are filtered for excellent noise toler-

ance and reliable communication. Additionally, a time-out

feature on the clock and data lines causes the LM73 to

automatically reset these lines if either is held low for an

extended time, thus exiting any bus lock-up condition without

processor intervention.

Features

n Single address pin offers choice of three selectable

addresses per version for a total of six possible

addresses.

n SMBus and I²C-compatible two-wire interface

n Supports 400 kHz operation

n Shutdown mode with one-shot feature available for very

low average power consumption

n Programmable digital temperature resolution from 11

bits to 14 bits.

Applications

n Portable Electronics

n Notebook Computers

n Automotive

n System Thermal Management

n Office Electronics

n Fast conversion rate ideal for quick power up and

measuring rapidly changing temperature

n Open-drain ALERT output pin goes active when

temperature is above a programmed temperature limit

n Very stable, low-noise digital ouput.

n UL Recognized Component

Typical Application

20147803

C is a registered trademark of Philips Electronics N.V. Corporation

DS201478

www.national.com

12 3 4 5 6 7...18

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与LM73相关器件

型号	品牌	获取价格	描述	数据表
LM73_06	NSC	获取价格	2.7V, SOT-23, 11-to-14 Bit Digital Temperature Sensor with 2-Wire Interface
LM7301	NSC	获取价格	Low Power, 4 MHz GBW, Rail-to-Rail Input-Outp
LM7301	TI	获取价格	At VS = 5V (Typ Unless Otherwise Noted), Tiny 5-Pin SOT-23 Package Saves Space
LM7301	ONSEMI	获取价格	Low Power 4 MHz GBW Rail-to-Rail Input-Output Operational Amplifier
LM7301_14	ONSEMI	获取价格	Low Power, 4 MHz GBW, Rail-to-Rail Input-Output Operational Amplifier
LM7301IM	NSC	获取价格	Low Power, 4 MHz GBW, Rail-to-Rail Input-Outp
LM7301IM	TI	获取价格	LM7301 Low Power, 4-MHz GBW, Rail-to-Rail Input-Output Operational Amplifier in SOT-23 Pac
LM7301IM/NOPB	TI	获取价格	单路、30V、4MHz 运算放大器 \| D \| 8 \| -40 to 85
LM7301IM5	NSC	获取价格	Low Power, 4 MHz GBW, Rail-to-Rail Input-Outp
LM7301IM5	TI	获取价格	LM7301 Low Power, 4-MHz GBW, Rail-to-Rail Input-Output Operational Amplifier in SOT-23 Pac

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