EMC1072 Datasheet, PDF (1/36 Pages) SMSC Corporation – 1°C Temperature Sensor with Selectable Address

EMC1072
1°C Temperature Sensor
with Selectable Address
PRODUCT FEATURES
Datasheet
General Description
Features
The EMC1072 is a high accuracy, low cost, System
Management Bus (SMBus) temperature sensor with pin
selectable SMBus address.
The device provides ±1° accuracy (max) for external
diode temperatures and ±2°C accuracy (max) for the
internal diode temperature. The EMC1072 monitors two
temperature channels (one external and one internal).
„ Pin Compatible with ADM1032, MAX6649, and LM99
„ External Temperature Monitors
— ±0.25°C typ accuracy (20°C < T_DIODE < 110°C)
— 0.125°C resolution
— Supports 2N3904 and AMD diodes
„ Internal Temperature Monitor
— ±0.25°C typ accuracy (-5°C < T_A < 100°C)
„ 3.3V Supply Voltage
Applications
„ SMBus 2.0 Compliant
— Programmable SMBus address
„ Notebook Computers
„ Desktop Computers
„ Industrial
„ Embedded applications
„ Programmable Temperature Limits for ALERT and
THERM
„ Available in Small 8-pin MSOP Lead-free RoHS
Compliant Package
Block Diagram
VDD
EMC1072
Switching
Current
DP
DN
Internal Temp
Diode
Analog
Mux
ΔΣ ADC
External Temperature
Register(s)
Internal
Temperature Register
Status Registers
GND
Conversion Rate Register
Low Limit Registers
High Limit Registers
THERM Limit Register
THERM Hysteresis Register
SMCLK
SMDATA
Configuration Register
Interupt Masking
SMBus Address Decode
ALERT
THERM/ADDR
SMSC EMC1072
DATASHEET
Revision 1.39 (10-11-10)