link to page 4 link to page 4 link to page 4 link to page 3 link to page 3 Data SheetADT7310SPECIFICATIONS TA = −55°C to +150°C; VDD = 2.7 V to 5.5 V; unless otherwise noted. Table 1. ParameterMinTypMaxUnitTest Conditions/Comments TEMPERATURE SENSOR AND ADC Accuracy1 −0.05 ±0.42 °C TA = −40°C to +105°C, VDD = 3.0 V ±0.44 °C TA = −40°C to +105°C, VDD = 2.7 V to 3.3 V ±0.5 °C TA = −55°C to +125°C, VDD = 3.0 V ±0.5 °C TA = −40°C to +105°C, VDD = 2.7 V to 3.6 V ±0.7 °C TA = −55°C to +150°C, VDD = 2.7 V to 3.6 V ±0.8 °C TA = −40°C to +105°C, VDD = 4.5 V to 5.5 V ±1.0 °C TA = −55°C to +150°C, VDD = 2.7 V to 5.5 V ADC Resolution 13 Bits Twos complement temperature value of sign bit plus 12 ADC bits (power-up default resolution) 16 Bits Twos complement temperature value of sign bit plus 15 ADC bits (Bit 7 = 1 in the configuration register) Temperature Resolution 13-Bit 0.0625 °C 13-bit resolution (sign + 12-bit) 16-Bit 0.0078 °C 16-bit resolution (sign + 15-bit) Temperature Conversion Time 240 ms Continuous conversion and one-shot conversion mode Fast Temperature Conversion Time 6 ms First conversion on power-up only 1 SPS Conversion Time 60 ms Conversion time for 1 SPS mode Temperature Hysteresis ±0.002 °C Temperature cycle = 25°C to 125°C, and back to 25°C Repeatability3 ±0.015 °C TA = 25°C DC PSRR 0.1 °C/V TA = 25°C DIGITAL OUTPUTS (OPEN DRAIN) High Output Leakage Current, IOH 0.1 5 µA CT and INT pins pulled up to 5.5 V Output High Current 1 mA VOH = 5 .5V Output Low Voltage, VOL 0.4 V IOL = 2 mA @ 5.5 V, IOL = 1 mA @ 3.3 V Output High Voltage, VOH 0.7 × VDD V Output Capacitance, COUT 3 pF DIGITAL INPUTS Input Current ±1 µA VIN = 0 V to VDD Input Low Voltage, VIL 0.4 V Input High Voltage, VIH 0.7 × VDD V Pin Capacitance 5 10 pF DIGITAL OUTPUT (DOUT) Output High Voltage, VOH VOH − 0.3 V ISOURCE = ISINK = 200 µA Output Low Voltage, VOL 0.4 V IOL = 200 µA Output Capacitance, COUT 50 pF POWER REQUIREMENTS Supply Voltage 2.7 5.5 V Supply Current At 3.3 V 210 250 µA Peak current while converting, SPI interface inactive At 5.5 V 250 300 µA Peak current while converting, SPI interface inactive 1 SPS Current At 3.3V 46 µA VDD = 3.3 V, 1 SPS mode, TA = 25°C At 5.5V 65 µA VDD = 5.5 V, 1 SPS mode, TA = 25°C Shutdown Current At 3.3 V 2.0 15 µA Supply current in shutdown mode At 5.5 V 5.2 25 µA Supply current in shutdown mode Power Dissipation Normal Mode 700 µW VDD = 3.3 V, normal mode at 25°C Power Dissipation 1 SPS 150 µW Power dissipated for VDD = 3.3 V, TA = 25°C 1 Accuracy includes lifetime drift. 2 The equivalent 3 σ limits are ±0.33°C. This 3 σ specification is provided to enable comparison with other vendors who use these limits. 3 Based on a floating average of 10 readings.
Rev. A | Page 3 of 24 Document Outline Features Applications General Description Functional Block Diagram Revision History Specifications SPI Timing Specifications Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Theory of Operation Circuit Information Converter Details Temperature Measurement One-Shot Mode 1 SPS Mode CT and INT Operation in One-Shot Mode Continuous Read Mode Shutdown Fault Queue Temperature Data Format Temperature Conversion Formulas 16-Bit Temperature Data Format 13-Bit Temperature Data Format 10-Bit Temperature Data Format 9-Bit Temperature Data Format Registers Status Register Configuration Register Temperature Value Register ID Register TCRIT Setpoint Register THYST Setpoint Register THIGH Setpoint Register TLOW Setpoint Register Serial Interface SPI Command Byte Writing Data Reading Data Interfacing to DSPs or Microcontrollers Serial Interface Reset INT and CT Outputs Undertemperature and Overtemperature Detection Comparator Mode Interrupt Mode Applications Information Thermal Response Time Supply Decoupling Temperature Monitoring Outline Dimensions Ordering Guide
