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Part Number: MIC281
Description: The MIC281 is a digital thermal sensor capable of measuring the temperature of a remote PN junction. It is opt...
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MIC281
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DataSheet
General Description
MIC281 General Description
The MIC281 is a digital thermal sensor capable of measuring the temperature of a remote PN junction. It is opti mized for applications favoring low cost and small size. The remote junction may be an inexpensive commodity transistor, e.g., 2N3906, or an embedded thermal diode such as found in Intel Pentium* II/III/IV CPUs, AMD Athlon* CPUs, and Xilinx Virtex* FPGAs.
The MIC281 is 100% software and hardware backward compatible with the MIC280 and features the same industry-leading noise performance and small size. The advanced integrating A/D converter and analog front-end reduce errors due to noise for maximum accuracy and minimum guardbanding.
A 2-wire SMBus 2.0-compatible serial interface is provided for host communication. The clock and data pins are 5V-tolerant regardless of the value of V DD. They will not clamp the bus lines low even if the device is powered down.Superior performance, low power, and small size make the MIC281 an excellent choice for cost-sensitive thermal management applications.
MIC281 Maximum Ratings
Power Supply Voltage, VDD ..............................................3.8V
Voltage on T1 ........................................0.3V to VDD +0.3V
Voltage on CLK, DATA ....................................0.3V to 6.0V
Current Into Any Pin .................................................±10mA
Power Dissipation, T A = 125°C................................109mW
Junction Temperature ................................................150°C
Storage Temperature ............................65°C to +150°C
ESD Ratings, Note 7
Human Body Model ................................................1.5kV
Machine Model ........................................................200V
Soldering (SOT23-6 Package)
+5
Vapor Phase (60s) ....................................220 +5/0 °C
Infrared (15s) ...........................................235 +5/ 0°C
Voltage on T1 ........................................0.3V to VDD +0.3V
Voltage on CLK, DATA ....................................0.3V to 6.0V
Current Into Any Pin .................................................±10mA
Power Dissipation, T A = 125°C................................109mW
Junction Temperature ................................................150°C
Storage Temperature ............................65°C to +150°C
ESD Ratings, Note 7
Human Body Model ................................................1.5kV
Machine Model ........................................................200V
Soldering (SOT23-6 Package)
+5
Vapor Phase (60s) ....................................220 +5/0 °C
Infrared (15s) ...........................................235 +5/ 0°C
MIC281 Features
* Remote temperature measurement using embedded
thermal diodes or commodity transistors
* Accurate remote sensing
±3°C max., 0°C to 100°C
* Excellent noise rejection
* I 2C and SMBus 2.0 compatible serial interface
* SMBus timeout to prevent bus lockup
* Voltage tolerant I/Os
* Low power shutdown mode
* Failsafe response to diode faults
* 3.0V to 3.6V power supply range
* IttyBitty(TM) SOT23-6 Package
thermal diodes or commodity transistors
* Accurate remote sensing
±3°C max., 0°C to 100°C
* Excellent noise rejection
* I 2C and SMBus 2.0 compatible serial interface
* SMBus timeout to prevent bus lockup
* Voltage tolerant I/Os
* Low power shutdown mode
* Failsafe response to diode faults
* 3.0V to 3.6V power supply range
* IttyBitty(TM) SOT23-6 Package
MIC281 Typical Application
* Desktop, server and notebook computers
* Set-top boxes
* Game consoles
* Appliances
* Set-top boxes
* Game consoles
* Appliances
MIC281 Connection Diagram
MIC281-0BM6
PDF/DataSheet Download
- Datasheet: MIC281-0BM6
- File Size: 175795 KB
- Manufacturer: MICREL [Micrel Semiconductor]
- Click here to Download
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