The MAX6634MSA+ is a 12bit plus sign temperature sensors with SMBus/I2C compatible serial interface in 8 pin NSOIC package. It combines temperature sensor, programmable overtemperature alarm and SMBus/I2C compatible serial interface in to a single package. The device converts its die temperature into digital values using internal ADC. The result of conversion is then held in a temperature register as a 12bit plus sign value which allows 0.0625°C resolution and can be readable at any time through serial interface. It is capable of reading temperatures up to 150°C. The MAX6634 has shutdown mode that saves power by turning off everything except power-on reset (POR) and serial interface. The MAX6634 has three address pins which allows up to eight devices to be connected to a single bus. The device incorporates dual mode active-low ALERT output (open drain) and can serve as an upgraded alternative to LM75 device. It is used in battery temperature alarms and PC temperature control.
Supply voltage range from 3V to 5.5V
Operating temperature range from -55°C to 150°C
Accuracy ±1°C (0°C to 50°C), ±1.5°C (-20°C to 85°C), ±2.5°C (-40°C to 125°C) and ±2.5°C (150°C)
User programmable temperature thresholds
User configurable alarm outputs and eight devices per bus
Ability to respond to SMBus/I2C compatible alert response address
Peak operating current of 270μA (VCC = 3V, SMBus inactive), 350μA (VCC = 5.5V, SMBus inactive)
Power supply rejection ratio of 0.2°C/V
Supply current of 12μA in shutdown (VCC = 3V, SMBus inactive) and 20μA (VCC = 5.5V, SMBus inactive)
Average operating current of 150μA (VCC = 3V, SMBus inactive) & 200μA (VCC = 5.5V, SMBus inactive)
(EN)
