ADT7410TRZ Analog Devices Inc, ADT7410TRZ Datasheet
ADT7410TRZ
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ADT7410TRZ Summary of contents
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FEATURES 13- or 16-bit user selectable temperature-to-digital converter Temperature accuracy ±0.5°C from −40°C to +105°C No temperature calibration/correction required by user Power saving 1 sample per second (SPS) mode Fast first conversion on power- SPI-compatible interface Operating ...
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ADT7310 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 General Description ......................................................................... 1 Functional Block Diagram .............................................................. 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 SPI Timing Specifications ........................................................... 4 Absolute Maximum Ratings ............................................................ 5 ESD Caution .................................................................................. 5 ...
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SPECIFICATIONS T = −55°C to +150° 2 5.5 V; unless otherwise noted Table 1. Parameter Min TEMPERATURE SENSOR AND ADC 1 Accuracy ADC Resolution Temperature Resolution 13 Bit 16 Bit Temperature Conversion Time Fast ...
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ADT7310 SPI TIMING SPECIFICATIONS T = −55°C to +150° 2 5.5 V, unless otherwise noted. All input signals are specified with rise time ( (10 and timed from a ...
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ABSOLUTE MAXIMUM RATINGS Table 3. Parameter V to GND DD DIN Input Voltage to GND DOUT Voltage to GND SCLK Input Voltage to GND CS Input Voltage to GND CT and INT Output Voltage to GND ESD Rating (Human Body ...
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ADT7310 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 4. Pin Function Descriptions Pin No. Mnemonic Description 1 SCLK Serial Clock Input. The serial clock is used to clock in and clock out data to and from any register of the ADT7310. ...
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TYPICAL PERFORMANCE CHARACTERISTICS 1.0 0.8 0.6 MAX ACCURACY LIMITS 0.4 0.2 0 –0.2 –0.4 –0.6 MAX ACCURACY LIMITS –0.8 –1.0 –60 –40 – TEMPERATURE (°C) Figure 6. Temperature Accuracy 1.0 0.8 MAX ACCURACY ...
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ADT7310 0.30 I CONTINUOUS CONVERSION DD 0.25 0.20 0.15 0.10 I 1SPS DD 0.05 0 2.5 3.0 3.5 4.0 4.5 SUPPLY VOLTAGE (V) Figure 10. Average Operating Supply Current vs. Supply Voltage at 25° ...
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THEORY OF OPERATION CIRCUIT INFORMATION The ADT7310 is a 13-bit digital temperature sensor that is extendable to 16-bits for greater resolution. An on-board temperature sensor generates a voltage proportional to absolute temperature, which is compared to an internal voltage reference ...
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ADT7310 CS 0x08 DIN DOUT SCLK Figure 14. Typical SPI One-Shot Write to Configuration Register Followed by a Read from the Temperature Value Register ONE-SHOT MODE Setting Bit and Bit the configuration register ...
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CT and INT Operation in One-Shot Mode See Figure 15 for more information on one-shot CT pin operation for T overtemperature events when one of the CRIT limits is exceeded. Note that in interrupt mode, a read from any register ...
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ADT7310 CONTINUOUS READ MODE When the command byte = 01010100 (0x54), the contents of the temperature value register can be read out without requiring repeated writes to the communications register. By sending 16 SCLK clocks to the ADT7310, the contents ...
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TEMPERATURE DATA FORMAT One LSB of the ADC corresponds to 0.0625°C in 13-bit mode. The ADC can theoretically measure a temperature range of 255°C, but the ADT7310 is guaranteed to measure a low value temperature limit of −55° ...
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ADT7310 REGISTERS The ADT7310 contains eight registers: • A status register • A configuration register • Five temperature registers • register The status register, temperature value register, and the ID register are read-only. Table 6. ADT7310 Registers Register ...
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CONFIGURATION REGISTER This 8-bit read/write register stores various configuration modes for the ADT7310, including shutdown, overtemperature and Table 8. Configuration Register (Register Address 0x01) Default Bit Value Type Name [0:1] 00 R/W Fault queue [2] 0 R/W CT pin polarity ...
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ADT7310 TEMPERATURE VALUE REGISTER The temperature value register stores the temperature measured by the internal temperature sensor. The temperature is stored as a 16-bit twos complement format. The temperature is read back from the temperature value register (Register Address 0x02) ...
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T SETPOINT REGISTER HYST The T setpoint 8-bit register (Register Address 0x05) stores HYST the temperature hysteresis value for the T temperature limits. The temperature hysteresis value is stored in straight binary format using four LSBs. Increments are possible in ...
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ADT7310 SERIAL INTERFACE The ADT7310 has a 4-wire serial peripheral interface (SPI). The interface has a data input pin (DIN) for inputting data to the device, a data output pin (DOUT) for reading data back from the device, and a ...
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WRITING DATA Data is written to the ADT7310 in eight bits or 16 bits, depending on the addressed register. The first byte written to the device is the command byte, with the read/write bit set to 0. The master then ...
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ADT7310 CS SCLK 8-BIT COMMAND BYTE 0 R/W REGISTER ADDR DIN DOUT READING DATA A read transaction begins when the master writes the command byte to the ADT7310 with the read/write ...
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INT AND CT OUTPUTS The INT and CT pins are open drain outputs, and both pins require a 10 kΩ pull-up resistor UNDERTEMPERATURE AND OVERTEMPERATURE DETECTION The INT and CT pins have two undertemperature/over- temperature modes: ...
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ADT7310 (COMPARATOR MODE) POLARITY = ACTIVE LOW (INTERRUPT MODE) POLARITY = ACTIVE LOW (COMPARATOR MODE) POLARITY = ACTIVE HIGH (INTERRUPT MODE) POLARITY = ACTIVE HIGH Figure 23. INT Output Temperature Response Diagram for T TEMPERATURE –13°C –14°C –15°C –16°C –17°C ...
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APPLICATIONS INFORMATION THERMAL RESPONSE TIME The time required for a temperature sensor to settle to a specified accuracy is a function of the thermal mass of the sensor and the thermal conductivity between the sensor and the object being sensed. ...
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ADT7310 OUTLINE DIMENSIONS 0.25 (0.0098) 0.10 (0.0040) COPLANARITY ORDERING GUIDE Model Temperature Range 2 ADT7310TRZ –55°C to +150°C 2 ADT7310TRZ-REEL –55°C to +150°C 2 ADT7310TRZ-REEL7 –55°C to +150°C 2 EVAL-ADT7310EBZ 1 Maximum accuracy over the −40°C to +105°C temperature range. ...