Datasheet ADT7316, ADT7317, ADT7318 (Analog Devices) - 8

ADT7316/ADT7317/ADT7318 FUNCTIONAL BLOCK DIAGRAM ADDRESS POINTER REGISTER ON-CHIP INTERNAL TEMPERATURE TEMPERATURE VALUE REGISTER DAC A STRING T 2 V SENSOR HIGH LIMIT REGISTERS OUT-A DAC A REGISTERS X X U U T D+ 7 V M M LOW LIMIT ANALOG A-TO-D DD L L REGISTERS VALUE LIMIT DAC B STRING MUX CONVERTER A A COMPARATOR 1 VOUT-B D– 8 REGISTER IT IT REGISTERS DAC B V IG IG DD LIMIT D D REGISTERS V CONTROL CONFIG. 1 DD EXTERNAL TEMPERATURE DAC C STRING REGISTER 16 V SENSOR VALUE REGISTER REGISTERS OUT-C DAC C CONTROL CONFIG. 2 REGISTER DAC D STRING CONTROL CONFIG. 3 REGISTERS 15 VOUT-D DAC D REGISTER ADT7316/ DAC CONFIGURATION ADT7317/ REGISTER GAIN POWER- SELECT DOWN ADT7318 LDAC CONFIGURATION LOGIC LOGIC REGISTER STATUS INTERRUPT MASK 10 INT/INT REGISTERS REGISTERS SMBus/SPI INTERFACE INTERNAL REFERENCE 6 5 4 13 12 11 9 3 14
1 00 1-
V CS SCL/SCLK SDA/DIN DOUT/ADD DD GND LDAC VREF-AB VREF-CD
66 02 Figure 8. Rev. B | Page 8 of 44 Document Outline FEATURES APPLICATIONS PIN CONFIGURATION GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS FUNCTIONAL BLOCK DIAGRAM DAC AC CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TERMINOLOGY TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION POWER-UP CALIBRATION CONVERSION SPEED FUNCTIONAL DESCRIPTION—VOLTAGE OUTPUT DIGITAL-TO-ANALOG CONVERTERS DIGITAL-TO-ANALOG SECTION RESISTOR STRING DAC EXTERNAL REFERENCE INPUTS OUTPUT AMPLIFIER THERMAL VOLTAGE OUTPUT Negative Temperatures Positive Temperatures FUNCTIONAL DESCRIPTION—MEASUREMENT TEMPERATURE SENSOR VDD MONITORING ON-CHIP REFERENCE ROUND ROBIN MEASUREMENT SINGLE-CHANNEL MEASUREMENT TEMPERATURE MEASUREMENT METHOD Internal Temperature Measurement External Temperature Measurement TEMPERATURE VALUE FORMAT Temperature Conversion Formula INTERRUPTS REGISTERS REGISTER DESCRIPTIONS SERIAL INTERFACE SERIAL INTERFACE SELECTION I2C SERIAL INTERFACE Writing to the ADT7316/ADT7317/ADT7318 Writing to the Address Pointer Register for a Subsequent Read Writing Data to a Register Reading Data from the ADT7316/ADT7317/ADT7318 SPI SERIAL INTERFACE Write Operation Read Operation SMBUS/SPI INT/ SMBUS Alert Response LAYOUT CONSIDERATIONS OUTLINE DIMENSIONS ORDERING GUIDE