Temp Sensor Digital Serial (2-Wire) 8-Pin MSOP T/R
The LM99 is an 11-bit remote diode temperature sensor with a 2-wire System Management Bus (SMBus) serial interface. The LM99 accurately measures: (1) its own temperature and (2) the temperature of a remote diode-connected transistor such as the 2N3904 or a thermal diode commonly found on Graphics Processor Units (GPU), Computer Processor Units (CPU or other ASICs. The LM99 remote diode temperature sensor shifts the temperature from the remote sensor down 16°C and operates on that shifted temperature: TACTUAL DIODE JUNCTION = TLM99 + 16°CThe local temperature reading requires no offset.The LM99 has an Offset Register which provides a means for precise matching to various thermal diodes.The LM99 and LM99-1 have the same functions but different SMBus slave addresses. This allows for one of each to be on the same bus at the same time.Activation of the ALERT\ output occurs when any temperature goes outside a preprogrammed window set by the HIGH and LOW temperature limit registers or exceeds the T_CRIT temperature limit. Activation of the T_CRIT_A\ occurs when any temperature exceeds the T_CRIT programmed limit.
Accurately Senses the Temperature of Remote Diodes Offset Register Allows Use of a Variety of Thermal Diodes On-board Local Temperature Sensing 10 Bit Plus Sign Remote Diode Temperature Data Format, 0.125 °C Resolution T_CRIT_A Output Useful for System Shutdown ALERT Output Supports SMBus 2.0 Protocol SMBus 2.0 Compatible Interface, Supports TIMEOUT 8-Pin VSSOP Package Supply Voltage 3.0 V to 3.6 V Supply Current 0.8 mA (typ) Local Temp Accuracy
(Includes Quantization error) Remote Diode Temp Accuracy
(Includes Quantization Error)
(Includes Quantization error)
- TA = 25°C to 125°C ±3.0°C (Max)
(Includes Quantization Error)
- TA = 30°C to 50°C, TD = 120°C to 140°C ±1.0°C (Max)
- TA = 0°C to 85°C, TD = 25°C to 140°C ±3.0°C (Max)
Характеристики
| Бренд | Texas Instruments |
|---|---|
| Рабочая температура | 0 to 125 °C |
| Описание продукта | 3.1(Max) x 3.1(Max) x 0.95(Max) |
| Supplier | MSOP |
| Lead Finish | Tin/Lead |
| Output Type | Digital |
| Function | Temp Sensor |
| Max Proce | 260 |
| Msl Level | 1 |
| Schedule B | 8542390000 |
| HTSN | 8542390001 |
| Страна происхождения | United States |
| Operating | 3 to 3.6 V |
| Accuracy | 1|3(Max) °C |
| Interface Type | Serial (2-Wire) |
| Resolution | 8|10+Sign Bit |
| Operating | 800 uA |
SKU: LM99-1CIMM