Date: 08/09/2011

8-channel I²C temperature, voltage and current monitor for 3V and 5V systems

Linear Technology Corporation has introduced the LTC2991, an 8-channel I²C temperature, voltage and current monitor for 3V and 5V systems. Eight single-ended voltage inputs can be configured to measure any combination of internal temperature, remote temperature, remote voltage and internal VCC for single or repeated measurements. The LTC2991 provides simple solution for simultaneously monitoring combinations of temperature, voltage and current without compromising accuracy on any parameter.

Key features of LTC2991 include:

Measures Four Remote Diode Temperatures
0.7°C External Temperature Accuracy, 0.06°C Resolution
1°C Internal Temperature Sensor
14-Bit ADC Measures Voltage/Current
PWM Temperature Output
3V to 5.5V Supply Operating Voltage
8 Selectable Addresses
Internal 10ppm/°C Voltage Reference
16-Lead MSOP Package

The LTC2991 provides applications such as supply voltage monitoring and remote diode temperature measurement, particularly in industrial or computing systems where thermal management is crucial for maximizing performance. When making differential measurements of diode or transistor voltages to calculate temperature, the LTC2991 allows for cancellation of error due to sensor series resistance and limits temperature noise to 0.07°RMS (Celsius or Kelvin), says Linear Technology. The I²C serial interface enables easy configuration and read back of the device's control, status and data registers, with support of up to 400kbit/s in I²C fast mode.

Available: Now
Price: $4.50 each in 1K pieces
Package: 16-lead MSOP package

For more information visit www.linear.com