TMP422-EP

TMP422-EP www.ti.com SBOS577 – SEPTEMBER 2011 ±1°C REMOTE TEMPERATURE AND ±2.5°C LOCAL TEMPERATURE SENSOR IN SOT23-8 Check for Samples: TMP422-EP FEATURES 1 234 SOT23-8 Package ±1°C Remote Diode Sensor (Max) ±2.5°C Local Temperature Sensor (Max) Series Resistance Cancellation n-Factor Correction Two-Wire/ SMBus™ Serial Interface Multiple Interface Addresses Diode Fault Detection RoHS Compliant and NO Sb/Br APPLICATIONS Processor/FPGA Temperature Monitoring LCD/ DLP®/LCOS Projectors Servers Central Office Telecom Equipment Storage Area Networks (SAN) SUPPORTS DEFENSE, AEROSPACE AND MEDICAL APPLICATIONS Controlled Baseline One Assembly/Test Site One Fabrication Site Available in Military (–55°C to 125°C) Temperature Range(1) Extended Product Life Cycle Extended Product-Change Notification Product Traceability +5V 1 DX1 2 DX2 8 V+ 7 SCL 6 SDA SMBus Controller 3 DX3 4 DX4 1 Channel Local 2 Channels Remote GND 5 (1) Additional temperature ranges available - contact factory DESCRIPTION The TMP422 is a remote temperature sensor monitor with a built-in local temperature sensor. The remote temperature sensor diode-connected transistors are typically low-cost, NPN- or PNP-type transistors or diodes that are an integral part of microcontrollers, microprocessors, or FPGAs. Remote accuracy is ±1°C for multiple IC manufacturers, with no calibration needed. The two-wire serial interface accepts SMBus write byte, read byte, send byte, a...