Datasheet MAX31889 (Maxim) - 3

MAX31889 ±0.25°C Accurate I2C Temperature Sensor
Electrical Characteristics
(VDD = 1.8V, TA = +25°C, minimum and maximum limits are from TA = -40°C to +125°C, unless otherwise noted. (Note 1))
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS TEMPERATURE SENSOR
-20°C to +105°C, -0.25 +0.25 3-sigma -20°C to +105°C, -0.45 +0.45 Temperature 6-sigma V °C Measurement Error DD = 1.7V to 3.6V -40°C to +125°C, -0.65 +0.65 3-sigma -40°C to +125°C, -0.9 +0.9 6-sigma Resolution 16-Bit 0.005 °C Repeatability VDD = 1.8V, 1sps,120 samples 0.008 °C RMS Conversion Time tCONV 16-bit 16.5 17.85 ms °C/ Long-Term Stability TA = +70°C, 0% RH 0.015 1000hrs Operating Supply V Voltage DD Guaranteed by PSRR 1.7 3.6 V DC Power Supply PSRR T Rejection Ratio A = +25°C 0.006 °C/V TA = +25ºC 68 105 During Conversion, µA Operating Current T V A = +85ºC 71 110 DD = 1.7V to 3.6V TA = +125°C 87 140 μA TA = +25ºC 0.55 3.0 µA Standby Current VDD = 3.6V TA = +85ºC 3.7 10 μA TA = +125ºC 15 38 µA
GPIO PINS
Input Voltage Low VIL_GPIO 0.4 V Input Voltage High VIH_GPIO 1.4 V Input Hysteresis VHYS_GPIO 320 mV Input Leakage Current IIN_GPIO VIN = 0V, TA = +25°C 0.01 1 μA Input Capacitance CIN_GPIO 10 pF Input Low Pulse Width 5 μS Output Low Voltage VOL_GPIO ISINK = 2mA 0.4 V
I2C INTERFACE / DIGITAL I/O CHARACTERISTICS
Input Voltage Low VIL 0.4 V Input Voltage High VIH 1.4 V Input Hysteresis VHYS 200 mV Input Capacitance CIN 10 pF Open Drain Output Low V Voltage OL_OD ISINK = 6mA, SDA Pin Only 0.4 V 19-100693 www.maximintegrated.com Maxim Integrated | 3 Document Outline General Description Applications Benefits and Features Simplified Block Diagram Absolute Maximum Ratings Package Information μDFN Electrical Characteristics Electrical Characteristics (continued) Typical Operating Characteristics Typical Operating Characteristics (continued) Pin Configuration μDFN Pin Description Functional Diagrams Detailed Description Operation Measuring Temperature Alarm Signaling GPIO I2C I2C Slave Address I2C/SMBus Compatible Serial Interface Detailed I2C Timing Diagram Bit Transfer START and STOP Conditions Early STOP Conditions Acknowledge Bit I2C Write Data Format I2C Read Data Format FIFO Description Register Map Register Map Register Details STATUS (0x0) INTERRUPT ENABLE (0x1) FIFO WRITE POINTER (0x04) FIFO READ POINTER (0x05) FIFO OVERFLOW COUNTER (0x06) FIFO DATA COUNTER (0x07) FIFO DATA (0x08) FIFO CONFIGURATION 1 (0x09) FIFO CONFIGURATION 2 (0x0A) SYSTEM CONTROL (0x0C) ALARM HIGH MSB (0x10) ALARM HIGH LSB (0x11) ALARM LOW MSB (0x12) ALARM LOW LSB (0x13) TEMP SENSOR SETUP (0x14) GPIO SETUP (0x20) GPIO CONTROL (0x21) ROM ID 1 (0x31) ROM ID 2 (0x32) ROM ID 3 (0x33) ROM ID 4 (0x34) ROM ID 5 (0x35) ROM ID 6 (0x36) PART IDENTIFIER (0xFF) Applications Information Measurement Considerations Typical Application Circuit Ordering Information Revision History