LM76CNM-3 datasheet(1/15 Pages) NSC

Part #	LM76CNM-3

Description	짹0.5째C, 짹1째C, 12-Bit Sign Digital Temperature Sensor and Thermal Window Comparator with Two-Wire Interface

Download	15 Pages

Scroll/Zoom	100%

Manufacturer	NSC [National Semiconductor (TI)]

Direct Link	http://www.national.com

Logo

1 / 15 page

LM76

±0.5˚C, ±1˚C, 12-Bit + Sign Digital Temperature Sensor

and Thermal Window Comparator with Two-Wire

Interface

General Description

The LM76 is a digital temperature sensor and thermal win-

dow comparator with an I

2C™ Serial Bus interface with an

accuracy of ±1˚C. This accuracy for the LM76CHM is speci-

fied for a −10˚C to 45˚C temperature range, while for the

LM76CNM the temperature range is 70˚C to 100˚C. The

LM76CHM is specified with an accuracy ±0.5˚C at 25˚C. The

window-comparator architecture of the LM76 eases the de-

sign of temperature control systems conforming to the ACPI

(Advanced Configuration and Power Interface) specification

for personal computers. The open-drain Interrupt (INT) out-

put becomes active whenever temperature goes outside a

programmable window, while a separate Critical Tempera-

ture Alarm (T_CRIT_A) output becomes active when the

temperature exceeds a programmable critical limit. The INT

output can operate in either a comparator or event mode,

while the T_CRIT_A output operates in comparator mode

only.

The host can program both the upper and lower limits of the

window as well as the critical temperature limit. Program-

mable hysterisis as well as a fault queue are available to

minimize false tripping. Two pins (A0, A1) are available for

address selection. The sensor powers up with default thresh-

olds of 2˚C T

HYST,

10˚C T

LOW,

64˚C T

HIGH,

and 80˚C

T_CRIT.

The LM76’s 3.3V and 5.0V supply voltage, Serial Bus inter-

face, 12-bit + sign output, and full-scale range of over 127˚C

make it ideal for a wide range of applications. These include

thermal management and protection applications in personal

computers, electronic test equipment, office electronics and

bio-medical applications.

Features

n Window comparison simplifies design of ACPI

compatible temperature monitoring and control.

n Serial Bus interface

n Separate open-drain outputs for Interrupt and Critical

Temperature shutdown

n Shutdown mode to minimize power consumption

n Up to 4 LM76s can be connected to a single bus

n 12-bit + sign output; full-scale reading of over 127˚C

Key Specifications

n Supply Voltage

3.3V or 5.0V

n Supply Current

operating

250 µA (typ)

450 µA (max)

shutdown

8 µA (max)

n Temperature

Accuracy

+25˚C

−10˚C to +45˚C

±0.5˚C(max)

±1.0˚C(max)

70˚C to 100˚C

±1.0˚C(max)

n Resolution

0.0625˚C

Applications

n System Thermal Management

n Personal Computers

n Office Electronics

n HVAC

I2C® is a registered trademark of Philips Corporation.

January 2000

DS101015

www.national.com

Similar Part No. - LM76CNM-3

Manufacturer	Part #	Datasheet	Description
Texas Instruments	LM76CHM-5	1Mb / 22P	[Old version datasheet] LM76 짹0.5째C, 짹1째C, 12-Bit Sign Digital Temperature Sensor and Thermal Window Comparator with Two-Wire Interface
	LM76CHM-5	1Mb / 22P	[Old version datasheet] Sign Digital Temperature Sensor and Thermal Window Comparator with Two-Wire Interface
	LM76CHM-5/NOPB	1Mb / 22P	[Old version datasheet] Sign Digital Temperature Sensor and Thermal Window Comparator with Two-Wire Interface
	LM76CHMX-5/NOPB	1Mb / 22P	[Old version datasheet] Sign Digital Temperature Sensor and Thermal Window Comparator with Two-Wire Interface

More results

Similar Description - LM76CNM-3

Manufacturer	Part #	Datasheet	Description
Texas Instruments	LM76CHM-5	1Mb / 22P	[Old version datasheet] LM76 짹0.5째C, 짹1째C, 12-Bit Sign Digital Temperature Sensor and Thermal Window Comparator with Two-Wire Interface
	LM76	1Mb / 22P	[Old version datasheet] Sign Digital Temperature Sensor and Thermal Window Comparator with Two-Wire Interface
	LM92	1Mb / 25P	[Old version datasheet] Accurate, 12-Bit Sign Temperature Sensor and Thermal Window Comparator With Two-Wire Interface
National Semiconductor ...	LM77	373Kb / 17P	9-Bit Sign Digital Temperature Sensor and Thermal Window Comparator with Two-Wire Interface
Texas Instruments	LM92CIMX	1Mb / 25P	[Old version datasheet] 0.33 Accurate, 12-Bit Sign Temperature Sensor and Thermal Window Comparator With Two-Wire Interface
National Semiconductor ...	LM92	808Kb / 17P	짹0.33째C Accurate, 12-Bit Sign Temperature Sensor and Thermal Window Comparator with Two-Wire Interface
National Semiconductor ...	LM92	396Kb / 18P	짹0.33째C Accurate, 12-Bit Sign Temperature Sensor and Thermal Window Comparator with Two-Wire Interface
Texas Instruments	LM77	1Mb / 24P	[Old version datasheet] LM77 9-Bit Sign Digital Temperature Sensor and Thermal Window Comparator with Two-Wire Interface
	LM77CIMX-3	1Mb / 23P	[Old version datasheet] LM77 9-Bit Sign Digital Temperature Sensor and Thermal Window Comparator with Two-Wire Interface
	LM77CIMMX-3	1Mb / 23P	[Old version datasheet] LM77 9-Bit Sign Digital Temperature Sensor and Thermal Window Comparator ith Two-Wire Interface

More results

LM76CNM-3 Datasheet(PDF) 1 Page - National Semiconductor (TI)

LM76CNM-3 Datasheet(HTML) 1 Page - National Semiconductor (TI)

Similar Part No. - LM76CNM-3

Similar Description - LM76CNM-3

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Datasheet Download

Link URL