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LM92CIM Datasheet

  • LM92CIM

  • 【0.33∑C Accurate, 12-Bit Sign Temperature Sensor and Ther...

  • 18頁(yè)

  • NSC

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LM92
鹵
0.33藲C Accurate, 12-Bit + Sign Temperature Sensor and Thermal Window Comparator with
Two-Wire Interface
March 2000
LM92
鹵
0.33藲C Accurate, 12-Bit + Sign Temperature Sensor and
Thermal Window Comparator with Two-Wire Interface
General Description
The LM92 is a digital temperature sensor and thermal win-
dow comparator with an I
2
C
鈩?/div>
Serial Bus interface and an
accuracy of
鹵
0.33藲C. The window-comparator architecture
of the LM92 eases the design of temperature control sys-
tems. The open-drain Interrupt (INT) output becomes active
whenever temperature goes outside a programmable win-
dow, while a separate Critical Temperature 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藲C T
HYST
, 10藲C T
LOW
, 64藲C T
HIGH
, and 80藲C
T_CRIT.
The LM92鈥檚 2.7V to 5.5V supply voltage range, Serial Bus in-
terface, 12-bit + sign output, and full-scale range of over
128藲C make it ideal for a wide range of applications. These
include thermal management and protection applications in
personal computers, electronic test equipment, office elec-
tronics, automotive, medical and HVAC applications.
n
n
n
n
Shutdown mode to minimize power consumption
Up to 4 LM92s can be connected to a single bus
12-bit + sign output
Operation up to 150藲C
Key Specifications
n
Supply Voltage
n
Supply Current
operating
shutdown
n
Temperature
Accuracy
30藲C
10藲C to 50藲C
鈭?0藲C to 85藲C
125藲C
鈭?5藲C to 150藲C
n
Linearity
n
Resolution
2.7V to 5.5V
350碌A(chǔ) (typ)
625碌A(chǔ) (max)
5碌A(chǔ) (typ)
鹵
0.33藲C(max)
鹵
0.50藲C(max)
鹵
1.0藲C(max)
鹵
1.25藲C(max)
鹵
1.5藲C(max)
鹵
0.5藲C(max)
0.0625藲C
Applications
n
n
n
n
n
n
n
HVAC
Medical Electronics
Electronic Test Equipment
System Thermal Management
Personal Computers
Office Electronics
Automotive
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
Simplified Block Diagram
DS101051-1
I2C
廬
is a registered trademark of Philips Corporation.
漏 2000 National Semiconductor Corporation
DS101051
www.national.com

LM92CIM 產(chǎn)品屬性

  • National Semiconductor (TI)

  • Digital

  • +/- 1.5 C

  • Serial (2-Wire)

  • + 150 C

  • - 55 C

  • Tube

  • Temperature Sensor

  • 12 bit+ Sign

  • 2.7 V to 5.5 V

  • 95

LM92CIM相關(guān)型號(hào)PDF文件下載

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