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LM70 Product Folder

SPI/MICROWIRE10-Bit plus Sign Digital Temperature Sensor

Generic P/N 70

General
Description

Package
& Models

Samples
& Pricing

Reliability
Metrics

Application
Notes

Parametric Table

Parametric Table

Temperature Min (deg C)	-55
Temperature Max (deg C)	150
Accuracy (+/-) (deg C)	2
Supply Min (Volt)	2.70
Supply Max (Volt)	5.50
Quiescent Current (mA)	.49
RemoteDiode ThermalSensor ()	-
Interface Type	SPI/Microwire

Resolution (bit)	11
Resolution degCperLSB ()	.25
Programmable Setpoints	No
Shutdown	Yes
Integrated FanControls ()	-
Interrupt Outputs ()	-
Fault Queue	No

Datasheet

Title	Size in Kbytes	Date	View Online	Download	Receive via Email
LM70 SPI MICROWIRE 10-Bit plus Sign Digital Temperature Sensor	285 Kbytes	27-Jul-00	View Online	Download	Receive via Email
LM70 SPI MICROWIRE 10-Bit plus Sign Digital Temperature Sensor (JAPANESE)	167 Kbytes

If you have trouble printing or viewing PDF file(s), see Printing Problems.

Package Availability, Models, Samples & Pricing

Part Number

Package

Status

Models

Samples &
Electronic
Orders

Budgetary Pricing

Std
Pack
Size

Package
Marking

Type

Pins

MSL/Lead-Free Availability

Lead
Time

Qty

SPICE

IBIS

Qty

$US each

LM70EVAL-LLP

evaluation board

Full production

N/A

N/A

1+

$26.70

1

-

N/A

0

LM70EVAL-MSOP

evaluation board

Full production

N/A

N/A

1+

$14.00

1

-

N/A

0

LM70CILD-3

8

Full production

N/A

N/A

1K+

$0.69

reel
of
1000

ZXYTT
T33

11-12 weeks

20000

LM70CILD-5

8

Full production

N/A

N/A

1K+

$0.69

reel
of
1000

ZXYTT
T35

11-12 weeks

20000

LM70CILDX-3

8

Full production

N/A

N/A

1K+

$0.69

reel
of
4500

ZXYTT
T33

11-12 weeks

20000

LM70CILDX-5

8

Full production

N/A

N/A

1K+

$0.69

reel
of
4500

ZXYTT
T35

11-12 weeks

20000

LM70CIMM-3

8

Full production

N/A

N/A

1K+

$0.63

reel
of
1000

ZXTT
T04C

11-12 weeks

0

LM70CIMM-5

8

Full production

N/A

N/A

1K+

$0.63

reel
of
1000

ZXTT
T03C

11-12 weeks

0

LM70CIMMX-3

8

Full production

N/A

N/A

1K+

$0.63

reel
of
3500

ZXTT
T04C

11-12 weeks

0

LM70CIMMX-5

8

Full production

N/A

N/A

1K+

$0.63

reel
of
3500

ZXTT
T03C

11-12 weeks

0

General Description

The LM70 is a temperature sensor, Delta-Sigma analog-to-digital converter with an SPI and MICROWIRE compatible interface available in LLP and MSOP 8-pin packages. The host can query the LM70 at any time to read temperature. A shutdown mode decreases power consumption to less than 10 µA. This mode is useful in systems where low average power consumption is critical.

The LM70 has 10-bit plus sign temperature resolution (0.25°C per LSB) while operating over a temperature range of -55°C to +150°C.

The LM70's 2.65V to 5.5V supply voltage range, low supply current and simple SPI interface make it ideal for a wide range of applications. These include thermal management and protection applications in hard disk drives, printers, electronic test equipment, and office electronics.

Features

0.25°C temperature resolution.
Shutdown mode conserves power between temperature reading
SPI and MICROWIRE Bus interface
MSOP-8 and LLP-8 packages save space

Key Specification

· Supply Voltage		2.65V to 5.5V
· Supply Current	operating	260µA (typ)
· Supply Current			490µA (max)
	shutdown	12µA (typ)
· Temperature Accuracy	-40°C to 85°C	±2°C(max)
	-10°C to 65°C	+1.5/-2°C(max)
	-55°C to 125°C	+3/-2°C(max)
	-55°C to 150°C	+3.5/-2°C(max)

Applications

System Thermal Management
Personal Computers
Disk Drives
Office Electronics
Electronic Test Equipment

Reliability Metrics

Part Number	Process	Early Failure Rate - Rejects	Sample Size (EFR)	PPM *	Rel. Rejects	Device Hours	Long Term Failure Rates (FITS)	MTTF
LM70CILD-3	CS065	0	8800	0	0	600000	6	169643205
LM70CILD-5	CS065	0	8800	0	0	600000	6	169643205
LM70CILDX-3	CS065	0	8800	0	0	600000	6	169643205
LM70CILDX-5	CS065	0	8800	0	0	600000	6	169643205
LM70CIMM-3	CS065	0	8800	0	0	600000	6	169643205
LM70CIMM-5	CS065	0	8800	0	0	600000	6	169643205
LM70CIMMX-3	CS065	0	8800	0	0	600000	6	169643205
LM70CIMMX-5	CS065	0	8800	0	0	600000	6	169643205
LM70EVAL-LLP	CS065	0	8800	0	0	600000	6	169643205
LM70EVAL-MSOP	CS065	0	8800	0	0	600000	6	169643205

For more information on Reliablitity Metrics, please click here.

Application Notes

Title	Size in Kbytes	Date	View Online	Download	Receive via Email
AN-1256: Application Note 1256 Tiny Temperature Sensors for Portable Systems	66 Kbytes	1-Oct-02	View Online	Download	Receive via Email

If you have trouble printing or viewing PDF file(s), see Printing Problems.

[Information as of 15-Jan-2004]