MAX30208
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Click here to ask about the production status of specific part numbers. ±0.1°C Accurate, I2C Digital Temperature Sensor General Description The MAX30208 operates from a 1.7V to 3.6V supply voltage, and is a low-power, high-accuracy digital temperature sensor with ±0.1°C accuracy from +30°C to +50°C and ±0.15°C accuracy from 0°C to +70°C. The MAX30208 has 16-bit resolution (0.005°C). The device uses a standard I2C serial interface to communicate with a host controller. Two GPIO pins are available. GPIO1 can be configured to trigger a temperature conversion, while GPIO0 can be configured to generate an interrupt for selectable status bits. The MAX30208 includes a 32-word FIFO for the temperature data and also includes high and low threshold digital temperature alarms. The device is available in a 2mm x 2mm x 0.75mm, 10-pin Thin LGA package. ●● Wearable Body Temperature Monitors ●● Medical Thermometers ●● Internet of Things (IoT) Sensors ●● High Accuracy and Precision • ±0.1°C Accuracy from +30°C to +50°C • ±0.15°C Accuracy from +0°C to +70°C ●● Low Power Consumption • 1.7V to 3.6V Operating Voltage • 67μA Operating Current During Measurement • 0.5μA Standby Current • 15ms Integration Time ●● Small Size • 2mm x 2mm x 0.75mm, 10-Pin Thin LGA ●● Safety and Compliance • High and Low Temperature Alarms ●● Digital Interface • Configurable Convert Temperature Input Pin • Configurable Interrupt Output Pin • 32-Word FIFO for Temperature Data • 4 I2C Addresses Available—More Addresses Available by Request • Unique ROM IDs Allow Device to be NIST Traceable Ordering Information appears at end of data sheet. Simplified Block Diagram Accuracy Error vs. Temperature 200 TEMP SENSOR CONTROL LOGIC

±0.1°C Accurate, I2C Digital Temperature Sensor Absolute Maximum Ratings 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. Package Information PACKAGE TYPE: 10-PIN THIN LGA Package Code Outline Number Land Pattern Number THERMAL RESISTANCE,...

±0.1°C Accurate, I2C Digital Temperature Sensor Electrical Characteristics (continued) (VDD = 1.8V, TA = 25°C, min/max are from TA = 0°C to +70°C, unless otherwise noted.) (Note 1) PARAMETER Operating Current During Conversion Standby Current GPIO PINS Input Voltage Low Input Voltage High Input Hysteresis Input Leakage Current Input Capacitance Input Low Pulse Width Output Low Voltage I2C / DIGITAL I/O CHARACTERISTICS Input Voltage Low Input Voltage High Input Hysteresis Input Capacitance Open Drain Output Low Voltage I2C / TIMING CHARACTERISTICS (Note 3) I2C Write Address Serial Clock...

±0.1°C Accurate, I2C Digital Temperature Sensor Electrical Characteristics (continued) (VDD = 1.8V, TA = 25°C, min/max are from TA = 0°C to +70°C, unless otherwise noted.) (Note 1) PARAMETER Setup Time for STOP Condition SYMBOL tSU_STO Pulse Width of Suppressed Spike SDA and SCL Receiving Rise Time SDA and SCL Receiving Fall Time SDA Transmitting Fall Time Note 1: All devices are 100% production tested at TA = +25°C. Specifications over temperature limits are guaranteed by Maxim Integrated bench or proprietary automated test equipment (ATE) characterization. Note 2: Unmounted: Part is on...

±0.1°C Accurate, I2C Digital Temperature Sensor Typical Operating Characteristics (VDD = +1.8V, TA = 25°C, unless otherwise noted.) CONVERSION CURRENT vs. TEMPERATURE STANDBY CURRENT vs. TEMPERATURE AVERAGE SUPPLY CURRENT vs. CONVERSION RATE (TA = 25°C) SAMPLE-TO-SAMPLE REPEATABILITY (1 SIGMA FOR 120 SAMPLES AT 1Hz, 32 DUTs) ACCURACY ERROR vs. TEMPERATURE (VDD = 1.8V, 32 DUTs, POST PCB REFLOW) toc05 ACCURACY ERROR vs. TEMPERATURE (VDD = 3.6V, 32 DUTs, POST PCB REFLOW) toc08 SELF HEATING vs. CONVERSION RATE (TA = 25°C, STILL AIR) FLEX 3mm x 150mm, SINGLE LAYER PCB 20mm x 33mm x 1.6mm, 2...

±0.1°C Accurate, I2C Digital Temperature Sensor Power. +1.7V to +3.6V. Connect 0.1μF capacitor connected to ground. Ground Reference. I2C Data Input and Output General Purpose Input/Output 1. State at each I2C start condition can be used to configure I2C addresses, see Table 2 & Table 3. Can be configured to act as an external temperature convert input. General Purpose Input/Output 0. State at each I2C start condition can be used to configure I2C addresses, see Table 2 & Table 3. Can be configured as an interrupt output.

±0.1°C Accurate, I2C Digital Temperature Sensor Functional Diagram 1.7V to 3.6V RSDA 4.7kΩ Detailed Description The MAX30208 temperature sensor measures temperature with ±0.1°C accuracy over a +30°C to +50°C temperature range and ±0.15°C accuracy over a 0°C to +70°C temperature range. The device communicates over a standard I2C interface with serial data (SDA) and serial clock (SCL) lines to read the FIFO, which contains up to 32, 2-byte temperature readings. The device operates properly over a -40°C to +85°C temperature range without any damage. In addition to the FIFO, the memory mapped...

±0.1°C Accurate, I2C Digital Temperature Sensor Measuring Temperature The device powers up in a low-power standby state. To initiate a temperature measurement the master must write a ‘1’ to the CONVERT_T bit in the TEMP_SENSOR_ SETUP[0x14] register. Do not sample at more than 20Hz, as the total time for a sample to be ready after sending a conversion command can be up to 50ms. Following the conversion, which takes 15ms(typ), the resulting temperature data is store in the FIFO and the device returns to the standby state. CONVERT_T automatically clears to ‘0.’ The output temperature data is...