Temperature Sensor. LM70 Datasheet

LM70 Sensor. Datasheet pdf. Equivalent


etcTI LM70
LM70
www.ti.com
SNIS112G – JUNE 2000 – REVISED MARCH 2013
LM70 SPI/MICROWIRE 10-Bit plus Sign Digital Temperature Sensor
Check for Samples: LM70
FEATURES
1
2 0.25°C Temperature Resolution.
• Shutdown Mode Conserves Power Between
Temperature Reading
• SPI and MICROWIRE Bus Interface
• VSSOP-8 and WSON-8 Packages Save Space
• UL Recognized Component
APPLICATIONS
• System Thermal Management
• Personal Computers
• Disk Drives
• Office Electronics
• Electronic Test Equipment
KEY SPECIFICATIONS
• Supply Voltage 2.65V to 5.5V
• Supply Current
– Operating
– 260 μA (typ)
– 490 μA (max)
– Shutdown
– 12 μA (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)
DESCRIPTION
The LM70 is a temperature sensor, Delta-Sigma
analog-to-digital converter with an SPI and
MICROWIRE compatible interface available in WSON
and VSSOP 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.
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.
2
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.
Copyright © 2000–2013, Texas Instruments Incorporated


LM70 Datasheet
Recommendation LM70 Datasheet
Part LM70
Description SPI/MICROWIRE 10-Bit plus Sign Digital Temperature Sensor
Feature LM70; LM70 www.ti.com SNIS112G – JUNE 2000 – REVISED MARCH 2013 LM70 SPI/MICROWIRE 10-Bit plus Sign Dig.
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Datasheet
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etcTI LM70
LM70
SNIS112G – JUNE 2000 – REVISED MARCH 2013
Simplified Block Diagram
www.ti.com
Connection Diagram
Top View
Top View
Figure 1. VSSOP-8 Package
See Package Number DGK0008A
Figure 2. WSON-8 Package
See Package Number NGK0008A
Pin Name
SI/O
VSSOP-8
Pin No.
1
SC
GND
V+
2
4
5
WSON-8
Pin No.
1
3
7
5
PIN DESCRIPTIONS
Description
Input/Output - Serial bus bi-directional data line.
Schmitt trigger input.
Clock - Serial bus clock Schmitt trigger input line.
Power Supply Ground
Positive Supply Voltage Input
CS 7 8 Chip Select input.
NC
3, 6, 8
2, 4, 6
No Connect
Typical Connection
From and to Controller
From Controller
Ground
DC Voltage from 2.65V to 5.5V. Bypass with a
0.1 μF ceramic capacitor.
From Controller
These pins are not connected to the LM70 die
in any way.
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Product Folder Links: LM70
Copyright © 2000–2013, Texas Instruments Incorporated



etcTI LM70
www.ti.com
Typical Application
LM70
SNIS112G – JUNE 2000 – REVISED MARCH 2013
Figure 3. COP Microcontroller Interface
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
Copyright © 2000–2013, Texas Instruments Incorporated
Product Folder Links: LM70
Submit Documentation Feedback
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