ASC7521A Datasheet Text
.. aSC7521A
LOW-VOLTAGE 1-WIRE DIGITAL TEMPERATURE SENSOR
PRODUCT SPECIFICATION
Product Description
The aSC7521A is a high-precision CMOS temperature sensor and voltage monitor with Simple Serial Transport (SST) patible serial digital interface, intended for use in PC hardware monitor applications. munication of device capabilities and temperature readings takes place over the high-speed bi-directional SST interface. The SST temperature sensor provides a means for an analog signal to travel over a digital bus enabling remote temperature sensing in areas previously not monitored in the PC. The temperature sensor supports an internal and external thermal diode. Sensor localization is aided by two address pins that distinguish multiple sensors on the same bus. The aSC7521A is available in MSOP-8 surface mount package.
Pin Configuration
VDD GND D+ D-
1
8
SST ADD0 GND ADD1
2
7
3
6 aSC7521A
4 5
Features
- - On-chip and remote temperature sensors Accuracy: o +/- 3°C over operational range o Internal +/- 2°C over 40°C to 70°C o Remote +/- 1°C over 50°C to 70°C Operational Range: -40°C to 125°C Temperature resolution: 0.125°C 1-wire SST serial interface Negotiable SST signaling rate up to 2-Mbps Temperature and errors reported over SST Internally corrected for diode non-ideality and series resistance 3-state address pins set one of 9 SST bus address 0x48 through 0x50 8-lead MSOP package MSL-1 per JEDEC J-STD-020C Pb-free Matte Sn leadfinish & RoHS pliant Packages
Applications
Desktop and Notebook puters
Application Diagram
3.3V
1 3 4
- -
- -
- -
- -
- -
CPU aSC7521A
5
ADD1 ADD0...