LM94022

更新时间： 2024-11-23 22:47:03

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
13页	704K
描述
1.5V, SC70, Multi-Gain Analog Temperature Sensor with Class-AB Output

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LM94022 数据手册

May 2005

LM94022

1.5V, SC70, Multi-Gain Analog Temperature Sensor with

Class-AB Output

n Battery Management

n Automotive

n Disk Drives

n Games

n Appliances

General Description

The LM94022 is

a precision analog output CMOS

integrated-circuit temperature sensor that operates at a sup-

ply voltage as low as 1.5 Volts. A class-AB output structure

gives the LM94022 strong output source and sink current

capability for driving heavy loads. For example, it is well

suited to source the input of a sample-and-hold analog-to-

digital converter with its transient load requirements. While

operating over the wide temperature range of −50˚C to

+150˚C, the LM94022 delivers an output voltage that is

inversely porportional to measured temperature. The

LM94022’s low supply current makes it ideal for battery-

powered systems as well as general temperature sensing

applications.

Features

n Low 1.5V operation

n Push-pull output with 50µA source current capability

n Four selectable gains

n Very accurate over wide temperature range of −50˚C to

+150˚C

n Low quiescent current

n Output is short-circuit protected

n Extremely small SC70 package

n Footprint compatible with the industry-standard LM20

temperature sensor

Two logic inputs, Gain Select 1 (GS1) and Gain Select 0

(GS0), select the gain of the temperature-to-voltage output

transfer function. Four slopes are selectable: −5.5 mV/˚C,

−8.2 mV/˚C, −10.9 mV/˚C, and −13.6 mV/˚C. In the lowest

gain configuration (GS1 and GS0 both tied low), the

LM94022 can operate with a 1.5V supply while measuring

temperature over the full −50˚C to +150˚C operating range.

Tying both inputs high causes the transfer function to have

the largest gain of −13.6 mV/˚C for maximum temperature

sensitivity. The gain-select inputs can be tied directly to V_DD

or Ground without any pull-up or pull-down resistors, reduc-

ing component count and board area. These inputs can also

be driven by logic signals allowing the system to optimize the

gain during operation or system diagnostics.

Key Specifications

Supply Voltage

Supply Current

Output Drive

1.5V to 5.5V

5.4 µA (typ)

50 µA

Temperature

20˚C to 40˚C

-50˚C to 70˚C

-50˚C to 90˚C

-50˚C to 150˚C

1.5˚C

Accuracy

1.8˚C

2.1˚C

2.7˚C

Applications

n Cell phones

n Wireless Transceivers

Operating

Temperature

−50˚C to 150˚C

Connection Diagram

Typical Transfer Characteristic

SC70-5

Output Voltage vs Temperature

20143001

Top View

See NS Package Number MAA05A

20143024

DS201430

www.national.com

12 3 4 5 6 7...13

中文翻译

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与LM94022相关器件

型号	品牌	获取价格	描述	数据表
LM94022_15	TI	获取价格	1.5-V, SC70, Multi-Gain Analog Temperature Sensor With Class-AB Output
LM94022BIMG	NSC	获取价格	1.5V, SC70, Multi-Gain Analog Temperature Sensor with Class-AB Output
LM94022BIMG	TI	获取价格	1.5-V, SC70, Multi-Gain Analog Temperature Sensor With Class-AB Output
LM94022BIMG/NOPB	NSC	获取价格	Analog Temperature Sensor, ANALOG TEMP SENSOR-VOLTAGE, 2.70Cel, RECTANGULAR, SURFACE MOUNT
LM94022BIMG/NOPB	TI	获取价格	1.5-V, SC70, Multi-Gain Analog Temperature Sensor With Class-AB Output
LM94022BIMGX	NSC	获取价格	1.5V, SC70, Multi-Gain Analog Temperature Sensor with Class-AB Output
LM94022BIMGX/NOPB	TI	获取价格	1.5-V, SC70, Multi-Gain Analog Temperature Sensor With Class-AB Output
LM94022EIMG	NSC	获取价格	暂无描述
LM94022EIMGX	TI	获取价格	IC,TEMPERATURE SENSOR,CMOS,TSSOP,6PIN,PLASTIC
LM94022-Q1	TI	获取价格	1.5-V, SC70, Multi-Gain Analog Temperature Sensor With Class-AB Output

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