Datasheet ADT7516, ADT7517, ADT7519 (Analog Devices) - 4

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ADT7516/ADT7517/ADT7519 Parameter1 Min Typ Max Unit Conditions/Comments
External Temperature Sensor External transistor = 2N3906 Accuracy @ VDD = 3.3 V ±10% ±1.5 °C TA = 85°C ±3 °C TA = 0°C to +85°C ±5 °C TA = −40°C to +120°C Accuracy @ VDD = 5 V ±5% ±2 ±3 °C TA = 0°C to +85°C ±3 ±5 °C TA = −40°C to +120°C Resolution 10 Bits Equivalent to 0.25°C Output Source Current 180 μA High level 11 μA Low level Thermal Voltage Output 8-Bit DAC Output Resolution 1 °C Scale Factor 8.97 mV/°C 0 V to VREF output, TA = −40°C to +120°C 17.58 mV/°C 0 V to 2 VREF output, TA = −40°C to +120°C 10-Bit DAC Output Resolution 0.25 °C Scale Factor 2.2 mV/°C 0 V to VREF output, TA = −40°C to +120°C 4.39 mV/°C 0 V to 2 VREF output, TA = −40°C to +120°C CONVERSION TIMES Single channel mode Slow ADC VDD/AIN 11.4 ms Averaging (16 samples) on 712 μs Averaging off Internal Temperature 11.4 ms Averaging (16 samples) on 712 μs Averaging off External Temperature 24.22 ms Averaging (16 samples) on 1.51 ms Averaging off Fast ADC VDD/AIN 712 μs Averaging (16 samples) on 44.5 μs Averaging off Internal Temperature 2.14 ms Averaging (16 samples) on 134 μs Averaging off External Temperature 14.25 ms Averaging (16 samples) on 890 μs Averaging off ROUND ROBIN UPDATE RATE5 Time to complete one measurement cycle through all channels Slow ADC @ 25°C Averaging On 79.8 ms AIN1 and AIN2 are selected on Pin 7 and Pin 8 Averaging Off 4.99 ms AIN1 and AIN2 are selected on Pin 7 and Pin 8 Averaging On 94.76 ms D+ and D– are selected on Pin 7 and Pin 8 Averaging Off 9.26 ms D+ and D– are selected on Pin 7 and Pin 8 Fast ADC @ 25°C Averaging On 6.41 ms AIN1 and AIN2 are selected on Pin 7 and Pin 8 Averaging Off 400.84 μs AIN1 and AIN2 are selected on Pin 7 and Pin 8 Averaging On 21.77 ms D+ and D– are selected on Pin 7 and Pin 8 Averaging Off 3.07 ms D+ and D– are selected on Pin 7 and Pin 8 DAC EXTERNAL REFERENCE INPUT4 VREF Input Range 1 VDD V Buffered reference VREF Input Impedance >10 MΩ Buffered reference and power-down mode Reference Feedthrough –90 dB Frequency = 10 kHz Channel-to-Channel Isolation –75 dB Frequency = 10 kHz Rev. B | Page 4 of 44 Document Outline FEATURES APPLICATIONS PIN CONFIGURATION GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS DAC AC CHARACTERISTICS TIMING DIAGRAMS FUNCTIONAL BLOCK DIAGRAM ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTIONAL DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TERMINOLOGY THEORY OF OPERATION POWER-UP CALIBRATION CONVERSION SPEED FUNCTION DESCRIPTION—VOLTAGE OUTPUT Digital-to-Analog Converters Digital-to-Analog Section Resistor String DAC Reference Inputs Output Amplifier Thermal Voltage Output FUNCTIONAL DESCRIPTION—ANALOG INPUTS Single-Ended Inputs Converter Operation ADC TRANSFER FUNCTION Analog Input ESD Protection AIN Interrupts FUNCTIONAL DESCRIPTION—MEASUREMENT Temperature Sensor VDD Monitoring On-Chip Reference Round Robin Measurement Single Channel Measurement Temperature Measurement Method Layout Considerations Interrupts ADT7516/ADT7517/ADT7519 REGISTERS Interrupt Status 1 Register (Read-Only) [Address 0x00] Interrupt Status 2 Register (Read-Only) [Address = 0x01] Internal Temperature Value/VDD Value Register LSBs (Read-Only) [Address = 0x03] External Temperature Value and Analog Input 1 to Analog Input 4 Register LSBs (Read-Only) [Address = 0x04] VDD Value Register MSBs (Read-Only) [Address = 0x06] Internal Temperature Value Register MSBs (Read-Only) [Address = 0x07] External Temperature Value or Analog Input AIN1 Register MSBs (Read-Only) [Address = 0x08] AIN2 Register MSBs (Read) [Address = 0x09] AIN3 Register MSBs (Read) [Address = 0x0A] AIN4 Register MSBs (Read) [Address = 0x0B] DAC A Register LSBs (Read/Write) [Address = 0x10] DAC A Register MSBs (Read/Write) [Address = 0x11] DAC B Register LSBs (Read/Write) [Address = 0x12] DAC B Register MSBs (Read/Write) [Address = 0x13] DAC C Register LSBs (Read/Write) [Address = 0x14] DAC C Register MSBs (Read/Write) [Address = 0x15] DAC D Register LSBs (Read/Write) [Address = 0x16] DAC D Register MSBs (Read/Write) [Address = 0x17] Control Configuration 1 Register (Read/Write) [Address = 0x18] Control Configuration 2 Register (Read/Write) [Address = 0x19] Control Configuration 3 Register (Read/Write) [Address = 0x1A] DAC Configuration Register (Read/Write) [Address = 0x1B] LDAC Configuration Register (Write-Only)[Address = 0x1C] Interrupt Mask 1 Register (Read/Write) [Address = 0x1D] Interrupt Mask 2 Register (Read/Write) [Address = 0x1E] Internal Temperature Offset Register (Read/Write) [Address = 0x1F] External Temperature Offset Register (Read/Write) [Address = 0x20] Internal Analog Temperature Offset Register (Read/Write) [Address = 0x21] External Analog Temperature Offset Register (Read/Write) [Address = 0x22] VDD VHIGH Limit Register (Read/Write) [Address = 0x23] VDD VLOW Limit Register (Read/Write) [Address = 0x24] Internal THIGH Limit Register (Read/Write) [Address = 0x25] Internal TLOW Limit Register (Read/Write) [Address = 0x26] External THIGH/AIN1 VHIGH Limit Register (Read/Write) [Address = 0x27] External TLOW/AIN1 VLOW Limit Register (Read/Write) [Address = 0x28] AIN2 VHIGH Limit Register (Read/Write) [Address = 0x2B] AIN2 VLOW Limit Register (Read/Write) [Address = 0x2C] AIN3 VHIGH Limit Register (Read/Write) [Address = 0x2D] AIN3 VLOW Limit Register (Read/Write) [Address = 0x2E] AIN4 VHIGH Limit Register (Read/Write) [Address = 0x2F] AIN4 VLOW Limit Register (Read/Write) [Address = 0x30] Device ID Register (Read-Only) [Address = 0x4D] Manufacturer’s ID Register (Read-Only) [Address = 0x4E] Silicon Revision Register (Read-Only) [Address = 0x4F] SPI Lock Status Register (Read-Only) [Address = 0x7F] SERIAL INTERFACE Serial Interface Selection I2C Serial Interface Writing to the ADT7516/ADT7517/ADT7519 Writing to the Address Pointer Register for a Subsequent Read Writing Data to a Register Reading Data from the ADT7516/ADT7517/ADT7519 SPI Serial Interface Write Operation Read Operation SMBus/SPI INT/ SMBUS ALERT RESPONSE OUTLINE DIMENSIONS ORDERING GUIDE