Datasheet ADT7320 (Analog Devices) - 3

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Data Sheet ADT7320 SPECIFICATIONS
TA = −40°C to +125°C, VDD = 2.7 V to 5.5 V, unless otherwise noted.
Table 1. Parameter Min Typ Max Unit Test Conditions/Comments
TEMPERATURE SENSOR AND ADC Accuracy1 0.0017 ±0.202 °C TA = −10°C to +85°C, VDD = 3.0 V ±0.25 °C TA = −20°C to +105°C, VDD = 2.7 V to 3.3 V ±0.31 °C TA = −40°C to +105°C, VDD = 3.0 V ±0.35 °C TA = −40°C to +105°C, VDD = 2.7 V to 3.3 V ±0.50 °C TA = −40°C to +125°C, VDD = 2.7 V to 3.3 V ±0.503 °C TA = −10°C to +105°C, VDD = 4.5 V to 5.5 V ±0.66 °C TA = −40°C to +125°C, VDD = 4.5 V to 5.5 V −0.85 °C TA = +150°C, VDD = 4.5 V to 5.5 V −1.0 °C TA = +150°C, VDD = 2.7 V to 3.3 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 bits) 16-Bit 0.0078 °C 16-bit resolution (sign + 15 bits) 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 Hysteresis4 ±0.002 °C Temperature cycle = 25°C to 125°C and back to 25°C Repeatability5 ±0.015 °C TA = 25°C Drift6 0.0073 °C 500 hour stress test at 150°C with VDD = 5.0 V DC PSRR 0.1 °C/V TA = 25°C DIGITAL OUTPUTS (CT, INT), OPEN DRAIN High Output Leakage Current, IOH 0.1 5 µA CT and INT pins pulled up to 5.5 V Output Low Voltage, VOL 0.4 V IOL = 3 mA at 5.5 V, IOL = 1 mA at 3.3 V Output High Voltage, VOH 0.7 × VDD V Output Capacitance, COUT 2 pF DIGITAL INPUTS (DIN, SCLK, CS) 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 VDD − 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 Peak current while converting, SPI interface inactive At 3.3 V 210 265 µA At 5.5 V 250 300 µA 1 SPS Current 1 SPS mode, TA = 25°C At 3.3 V 46 µA VDD = 3.3 V At 5.5 V 65 µA VDD = 5.5 V Rev. 0 | Page 3 of 24 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION PRODUCT HIGHLIGHTS FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS 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 CONTINUOUS CONVERSION MODE ONE-SHOT MODE CT and INT Operation in One-Shot Mode 1 SPS MODE SHUTDOWN MODE 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 POWERING FROM A SWITCHING REGULATOR TEMPERATURE MEASUREMENT QUICK GUIDE TO MEASURING TEMPERATURE OUTLINE DIMENSIONS ORDERING GUIDE