aSC7531A

• 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
• Voltage monitoring of 12V, 5V, 3.3V, 2.5V and Vccp to +/- 2% accuracy, 7.8mV resolution
• 1-wire SST serial interface
• Negotiable SST signaling rate up to 2-Mbps
• Internally corrected for diode non-ideality and series resistance
• 3-state address pin sets one of 3 SST bus address 0x48 through 0x4A
• 10-lead MSOP package
• MSL-1 per JEDEC J-STD-020C
• Pb-free Matte Sn lead finish & RoHS Compliant Packages

The aSC7531 is a high-precision CMOS temperature sensor and voltage monitor with Simple Serial Transport (SST) compatible serial digital interface, intended for use in PC hardware monitor applications.

Communication of aSC7531A capabilities, temperature and voltage readings take place over the high-speed bi-directional SST interface.

The SST temperature sensor aSC7531A 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. aSC7531A is used with 2N3904 transistor connected as a remote diode, aSC7531B is used with CPU substrate diode.

The aSC7531 is available in MSOP-10 surface mount package.