Temperature Monitor
NVT211 +15C Temperature Monitor with Series Resistance Cancellation
The NVT211 is a dual-channel digital thermometer and...
Description
NVT211 +15C Temperature Monitor with Series Resistance Cancellation
The NVT211 is a dual-channel digital thermometer and undertemperature/overtemperature alarm, intended for use in thermal management systems. It is register-compatible with the NCT1008 and NCT72. A feature of the NVT211 is series resistance cancellation, where up to 1.5 kW (typical) of resistance in series with the temperature monitoring diode can be automatically cancelled from the temperature result, allowing noise filtering. The NVT211 has a configurable ALERT output and an extended, switchable temperature measurement range. The NVT211 can measure the temperature of a remote thermal diode accurate to ±1°C and the ambient temperature accurate to ±3°C. The temperature measurement range defaults to 0°C to +127°C, compatible with the NCT1008 and NCT72, but it can be switched to a wider measurement range of −64°C to +191°C. The NVT211 communicates over a 2-wire serial interface, compatible with system management bus (SMBus/I2C) standards. The default SMBus/I2C address of the NVT211 is 0x4C. An NVT211D is available with an SMBus/I2C address of 0x4D. This is useful if more than one NVT211 is used on the same SMBus/I2C. An ALERT output signals when the on-chip or remote temperature is out of range. The THERM output is a comparator output that allows on/off control of a cooling fan. The ALERT output can be reconfigured as a second THERM output, if required. The NVT211 has been through Automotive Qualification accord...
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