Remote Temperature Sensor with SMBus Serial InterfaceABSOLUTE MAXIMUM RATINGS VCC to GND ..-0.3V to +6V Continuous Power Dissipation (TA = +70°C) DXP, ADD_ to GND ..-0.3V to (VCC + 0.3V) µMAX (derate 5.6mW/°C above +70°C) ..444mW DXN to GND ..-0.3V to +0.8V Operating Temperature Range (extended) ..-55°C to +125°C SMBCLK, SMBDATA, ALERT, STBY to GND ...-0.3V to +6V Junction Temperature. ..+150°C SMBDATA Current...-1mA to 50mA Storage Temperature Range ..-65°C to +150°C DXN Current. ..±1mA Lead Temperature (soldering, 10s) ..+300°C ESD Protection (all pins, Human Body Model).. ...± 2000V MAX1618 Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (VCC = +3.3V, configuration byte register = X8h, TA = 0°C to +85°C , unless otherwise noted.) PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSADC AND POWER SUPPLY Temperature Resolution Monotonicity guaranteed 8 Bits (Note 1) Temperature Error, TR = +60°C to +100°C -3 3 °C Remote Diode (Note 2) TR = +55°C to +125°C -5 5 Supply-Voltage Range VCC 3 5.5 V Undervoltage Lockout VCC input, disables A/D conversion, UVLO 2.6 2.8 2.95 V Threshold rising edge Undervoltage Lockout Hysteresis 50 mV Power-On Reset Threshold VCC, falling edge 1 1.7 2.5 V POR Threshold Hysteresis 50 mV Standby Supply Current SMBus static 3 10 µA Hardware or software standby, Standby Supply Current 5 µA SMBCLK at 10kHz Average Operating Autoconvert Autoconvert mode, average measured over 450 900 µA Supply Current 4sec, 16 conv/sec mode, average Conversion Time tCONV From stop bit to conversion complete 47 62 78 ms Conversion Rate Timing Error Autoconvert mode -25 25 % High level 80 100 120 DXP forced to DXN + 0.65V, Remote-Diode Source Current µA ID = 1 (high) Low level 8 10 12 DXN Source Voltage 0.7 V ADDO, ADD1 Bias Current Momentary upon power-on reset 160 µA SMBus INTERFACE STBY SMBCLK, SMBDATA VIH VCC = 3.0V 2.2 V Input High Voltage STBY, SMBCLK, SMBDATA VIL VCC = 3.0V to 5.5V 0.8 V Input Low Voltage STBY, SMBCLK, SMBDATA Logic inputs forced to VCC or GND -1 1 µA Input Current SMBCLK, SMBDATA SMBCLK, SMBDATA forced to 0.4V 6 mA Output Low Sink Current 2_______________________________________________________________________________________
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