Features • 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 Description The LM75A is an industry-standard digital temperature sensor with an integrated Sigma-Delta analog-to-digital converter and I 2C ™ 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. 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 I 2C 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 SOP-8 package and an MSOP-8 package. Key Specification ■  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) Applications • General System Thermal Management • Communications Infrastructure • Electronic Test Equipment • Environmental Monitoring

MY BRIEFCASE                                       Click any "Briefcase" icon to add an item

Typical Application click for larger image	Block Diagram click for larger image
Typical Performance click for larger image

Datasheet

Title		Size	Date	Other Language
	LM75A Digital Temperature Sensor and Thermal Watchdog with Two-Wire Interface	433 Kbytes	20-Aug-09

Featured Application Notes

Title		Size	Date	Other Language
	AN-79: Application Note 79 IC Preamplifier Challenges Choppers on Drift	380 Kbytes	1-Oct-02
	AN-480: A 40 MHz Programmable Video Op Amp	181 Kbytes	4-Nov-95
	AN-210: Application Note 210 New Phase-Locked-Loops Have Advantages as Frequency to Voltage Converters (and more)	339 Kbytes	3-Oct-02
	AN-71: Application Note 71 Micropower Circuits Using the LM4250 Programmable Op Amp	312 Kbytes	2-Oct-02
	AN-127: Application Note 127 LM143 Monolithic High Voltage Operational Amplifier Applications	441 Kbytes	2-May-04

More Application Notes

Title		Size	Date	Other Language
	AN-1155: Application Note 1155 A Simple Software I2C Routine for the COP8	82 Kbytes	15-May-04

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Standard Pack Size
LM75AIM/NOPB RoHS	SOIC NARROW	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 5000 AVNET-EM Worldwide 576 DIGIKEY Worldwide 655 FUTURE Worldwide 560 NEWARK Americas 582	$0.53 each at 1K+ pcs	rail of 95
LM75AIMX/NOPB RoHS	SOIC NARROW	Full production Lead Time: 6 weeks	Distributor Region Qty DIGIKEY Worldwide 0	$0.53 each at 1K+ pcs	reel of 2500
LM75AIMME/NOPB RoHS	MINI SOIC	Preliminary Lead Time: 6 weeks	Contact your distributor	CALL	reel of N/A
LM75AIMM/NOPB RoHS	MINI SOIC	Preliminary Lead Time: 6 weeks	Contact your distributor	$0.53 each at 1K+ pcs	reel of 1000
LM75AIMMX/NOPB RoHS	MINI SOIC	Preliminary Lead Time: 6 weeks	Contact your distributor	$0.53 each at 1K+ pcs	reel of 3500

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LM75A-5.0 MDC	NONE	NONE	22 Jul 1999

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM75AIM	CMOS7	0	18406	0	0	1089000	4	309006723
LM75AIMM	CMOS7	0	18406	0	0	1089000	4	309006723
LM75AIMME	CMOS7	0	18406	0	0	1089000	4	309006723
LM75AIMMX	CMOS7	0	18406	0	0	1089000	4	309006723
LM75AIMX	CMOS7	0	18406	0	0	1089000	4	309006723

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LM75A-5.0 MDC	NONE	NONE	22 Jul 1999