General Description
The EMC1201 and EMC1202 are temperature sensors that communicate with a host over a single-wire SMSC BudgetBus™ Sensor Interface. The EMC1201 has an internal temperature sensor and the EMC1202 adds one remote diode. Packaged in a SOT23-5, the EMC1201 provides an accurate, low-cost, low-current, solution for critical temperature monitoring in applications such as embedded systems or computers. When used in combination with an SMSC Super I/O host, such as a keyboard controller, a complete thermal management system is created. A power down mode extends battery life in portable applications. The internal 11-bit sigma delta temperature-to-digital converter provides superb linearity, high accuracy and excellent noise immunity.

Features
■ Single-wire SMSC BudgetBus™ Sensor Interface
■ Low Power, 3.0V to 3.6V Supply
   — < 50uA at 1 conversion per second
   — < 3uA in Standby
■ External Temperature Sensor
   — Range -63.875º C to +191.875º C
   — 0.125º C resolution
   — ±1º C Accuracy 60º C to 100º C
   — Diode Fault Reporting
■ Self Contained Internal Temperature Sensor
   — Range 0º C to +85º C
   — 0.125º C resolution
   — ±3º C Accuracy 0º C to 85º C
■ SOT23-5 Green, Lead-free Packages

Applications
■ Desktop and Notebook Computers
■ Thermostats
■ Smart batteries
■ Industrial/Automotive
■ Other Electronic Systems