LM75A

更新时间： 2024-11-24 12:27:39

品牌	Logo	应用领域
德州仪器 - TI		传感器温度传感器
页数	文件大小	规格书
21页	1092K
描述
LM75A Digital Temperature Sensor and Thermal Watchdog with Two-Wire Interface

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LM75A 数据手册

LM75A

www.ti.com

SNOS808O –JANUARY 2000–REVISED MAY 2013

LM75A Digital Temperature Sensor and Thermal Watchdog with Two-Wire Interface

Check for Samples: LM75A

FEATURES

DESCRIPTION

The LM75A is an industry-standard digital

temperature sensor with an integrated Sigma-Delta

analog-to-digital converter and I²C interface. The

LM75A provides 9-bit digital temperature readings

with an accuracy of ±2°C from -25°C to 100°C and

±3°C over -55°C to 125°C.

•

No External Components Required

•

Shutdown Mode to Minimize Power

Consumption

Up to Eight LM75As can be Connected to a

Single Bus

Power Up Defaults Permit Stand-Alone

Operation as Thermostat

The LM75A operates with a single supply from +2.7V

to +5.5V. Communication is accomplished over a 2-

wire interface which operates up to 400kHz. The

LM75A has three address pins, allowing up to eight

LM75A devices to operate on the same 2-wire bus.

The LM75A has a dedicated over-temperature output

(O.S.) with programmable limit and hysteresis. This

output has programmable fault tolerance, which

allows the user to define the number of consecutive

error conditions that must occur before O.S. is

activated. The wide temperature and supply range

and I²C interface make the LM75A ideal for a number

of applications including base stations, electronic test

equipment, office electronics, personal computers,

and any other system where thermal management is

critical to performance. The LM75A is available in an

SOIC-8 package and an VSSOP-8 package.

APPLICATIONS

•

General System Thermal Management

Communications Infrastructure

Electronic Test Equipment

Environmental Monitoring

KEY SPECIFICATIONS

•

Supply Voltage

LM75A: 2.7V to 5.5V

Supply Current

–

•

–

Operating: 280 μA (Typ)

Shutdown: 4 μA (Typ)

•

Temperature Accuracy

–

25°C to 100°C: ±2°C (Max)

55°C to 125°C: ±3°C (Max)

SIMPLIFIED BLOCK DIAGRAM

Temperature

Threshold

O.S.

10-Bit

Digital

Decimation

Filter

Set Point

1-Bit

D/A

Set Point

Comparator

9-Bit Sigma-Delta ADC

Reset

Silicon Bandgap

Temperature

Sensor

Product ID

Configuration

Pointer

Set

HYST

Point Register

SDA

SCL

Two-Wire Interface

GND

Figure 1.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...21

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与LM75A相关器件

型号	品牌	获取价格	描述	数据表
LM75AD	NXP	获取价格	Digital temperature sensor and thermal Watchdog
LM75AD,112	NXP	获取价格	LM75A - Digital temperature sensor and thermal watchdog SOIC 8-Pin
LM75AD,118	NXP	获取价格	LM75A - Digital temperature sensor and thermal watchdog SOIC 8-Pin
LM75AD.112	NXP	获取价格	Digital temperature sensor and thermal watchdog
LM75ADP	NXP	获取价格	Digital temperature sensor and thermal Watchdog
LM75ADP,118	NXP	获取价格	LM75A - Digital temperature sensor and thermal watchdog TSSOP 8-Pin
LM75ADP-T	NXP	获取价格	Digital temperature sensor and thermal watchdog - Accuracy on-chip: 2@-25~1002@+60~100C; A
LM75AIM	NSC	获取价格	Switch/Digital Output Temperature Sensor, DIGITAL TEMP SENSOR-SERIAL, 9BIT(s), 3Cel, RECTA
LM75AIM/NOPB	TI	获取价格	LM75A Digital Temperature Sensor and Thermal Watchdog with Two-Wire Interface
LM75AIM/NOPB	NSC	获取价格	Switch/Digital Output Temperature Sensor, DIGITAL TEMP SENSOR-SERIAL, 9BIT(s), 3Cel, RECTA

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