LM94023

更新时间： 2024-11-27 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
16页	380K
描述
1.5V, micro SMD, Dual-Gain Analog Temperature Sensor with Class AB Output

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LM94023 数据手册

September 10, 2008

LM94023

1.5V, micro SMD, Dual-Gain Analog Temperature Sensor

with Class AB Output

General Description

The LM94023 is a precision analog output CMOS integrated-

Disk Drives

Battery Management

■

Automotive

circuit temperature sensor that operates at a supply voltage

as low as 1.5 Volts. Available in the very small four-bump mi-

croSMD 0.8mm x 0.8mm) the LM94023 occupies very little

board area. A class-AB output structure gives the LM94023

strong output source and sink current capability for driving

heavy loads, making it well suited to source the input of a

sample-and-hold analog-to-digital converter with its transient

load requirements, This generally means the LM94023 can

be used without external components, like resistors and

buffers, on the output. While operating over the wide temper-

ature range of −50°C to +150°C, the LM94023 delivers an

output voltage that is inversely porportional to measured tem-

perature. The LM94023's low supply current makes it ideal for

battery-powered systems as well as general temperature

sensing applications.

Games

Appliances

Features

Low 1.5V operation

■

Push-pull output with 50µA source current capability

Two selectable gains

Very accurate over wide temperature range of −50°C to

+150°C

Low quiescent current

■

Output is short-circuit protected

Extremely small microSMD package

Footprint compatible with the industry-standard LM20

temperature sensor

A Gain Select (GS) pin sets the gain of the temperature-to-

voltage output transfer function. Either of two slopes are

selectable: −5.5 mV/°C (GS=0) or −8.2 mV/°C (GS=1). In the

lowest gain configuration, the LM94023 can operate with a

1.5V supply while measuring temperature over the full −50°C

to +150°C operating range. Tying GS high causes the transfer

function to have the largest gain 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, reducing

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

1.5V to 5.5V

■ꢀSupply Voltage

■ Supply Current

■ Output Drive

■ꢀTemperature

Accuracy

5.4 μA (typ)

±50 μA

20°C to 40°C

-50°C to 70°C

-50°C to 90°C

-50°C to 150°C

±1.5°C

±1.8°C

±2.1°C

±2.7°C

Applications

■ꢀOperating

Temperature

Cell phones

■

−50°C to 150°C

Wireless Transceivers

Connection Diagram

Typical Transfer Characteristic

micro SMD

Output Voltage vs Temperature

30075001

Top View

See NS Package Number TMD04AAA

30075024

300750

www.national.com

12 3 4 5 6 7...16

中文翻译

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与LM94023相关器件

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LM94023_15	TI	获取价格	1.5V, micro SMD, Dual-Gain Analog Temperature Sensor with Class AB Output
LM94023BITME	NSC	获取价格	1.5V, micro SMD, Dual-Gain Analog Temperature Sensor with Class AB Output
LM94023BITME/NOPB	TI	获取价格	1.5V, micro SMD, Dual-Gain Analog Temperature Sensor with Class AB Output
LM94023BITMX	NSC	获取价格	1.5V, micro SMD, Dual-Gain Analog Temperature Sensor with Class AB Output
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LM94CIMTX/NOPB	TI	获取价格	具有 β 补偿、风扇控制、硬件和电源监控器、采用 TSSOP 封装的 ±2°C 四路远程和
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