Pinout
Specifications| Remote Diode Thermal Sensors | 2 |
| Temperature Accuracy (+/-) | 1.1 deg C |
| Supply Min | 3.0 Volt |
| Quiescent Current | 0.57 mA |
| Temperature Min | -40 deg C |
| Temperature Max | 140 deg C |
| Interface Type | 2-Wire Serial |
| Programmable Setpoints | Yes |
| TruTherm(TM) Beta Compensation | No |
| Resolution | 13 bits |
| Resolution degC/LSB | 0.03125 |
| Supply Max | 3.3 Volt |
| Shut down | Yes |
| Interrupt Outputs | 3 |
| Fault Queue | No |
| Automotive Selection Guide | Yes |
| PowerWise | Yes |
| View Using Catalog |
DescriptionLM95213 is an 11-bit digital temperature sensor with a 2-wire System Management Bus (SMBus) interface that can monitor the temperature of two remote diodes as well as its own temperature. The LM95213 can be used to very accurately monitor the temperature of up to two external devices such as microprocessors, graphics processors or diode-connected 2N3904s.
The LM95213 reports temperature in two different formats for +127.875°C/128°C range and 0°C/255°C range. The LM95213 ^TCRIT1, ^TCRIT2 and ^TCRIT3 outputs are triggered when any unmasked channel exceeds its corresponding programmable limit and can be used to shutdown the system, to turn on the system fans or as a microcontroller interrupt function. The current status of the ^TCRIT1, ^TCRIT2 and ^TCRIT3 pins can be read back from the status registers. Mask registers are available for further control of the ^TCRIT outputs.
LM95213's remote temperature channels have programmable digital filters to minimize unwanted ^TCRIT events when temperature spikes are encountered.
For optimum flexibility and accuracy each LM95213 channel includes offset correction registers for targeting diodes other than the 2N3904. A three level address pin allows connection of up to 3 LM95213s to the same SMBus master. The LM95213 includes power saving functions such as: programmable conversion rate, shutdown mode, and turn off of unused channels.
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
| LM95213CISD |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
| LM95213CISDX |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.For more information on Reliability Metrics, please click here.
LM95213 Data Sheet
