Datasheet ADT7516, ADT7517, ADT7519 (Analog Devices) - 10

ADT7516/ADT7517/ADT7519 PIN CONFIGURATION AND FUNCTIONAL DESCRIPTIONS VOUT-B 1 16 VOUT-C VOUT-A 2 ADT7516/ 15 VOUT-D VREF-IN 3 ADT7517/ 14 AIN4 ADT7519 CS 4 13 SCL/SCLK TOP VIEW GND 5 12 SDA/DIN (Not to Scale) VDD 6 11 DOUT/ADD D+/AIN1 7 10 INT/INT
6 -00
D–/AIN2 8 9 LDAC/AIN3
3 88 02 Figure 7. Pin Configuration (QSOP Package)
Table 5. Pin Function Descriptions Pin No. Mnemonic Description
1 VOUT-B Buffered Analog Output Voltage from DAC B. The output amplifier has rail-to-rail operation. 2 VOUT-A Buffered Analog Output Voltage from DAC A. The output amplifier has rail-to-rail operation. 3 VREF-IN Reference Input Pin for All Four DACs. This input is buffered and has an input range from 1 V to VDD. 4 CS SPI Active Low Control Input. This is the frame synchronization signal for the input data. When CS goes low, it enables the input register, and data is transferred in on the rising edges and out on the falling edges of the subsequent serial clocks. It is recommended that this pin be tied high to VDD when operating the serial interface in I2C mode. 5 GND Ground Reference Point. Ground reference point for all circuitry on the part. Analog and digital ground. 6 VDD Positive Supply Voltage, 2.7 V to 5.5 V. The supply should be decoupled to ground. 7 D+/AIN1 D+: Positive Connection to External Temperature Sensor. AIN1: Analog Input. Single-ended analog input channel. Input range is 0 V to 2.28 V or 0 V to VDD. 8 D–/AIN2 D–: Negative Connection to External Temperature Sensor. AIN2: Analog Input. Single-ended analog input channel. Input range is 0 V to 2.28 V or 0 V to VDD. 9 LDAC/AIN3 LDAC: Active Low Control Input. Transfers the contents of the input registers to their respective DAC registers. A falling edge on this pin forces any or all DAC registers to be updated if the input registers have new data. A minimum pulse width of 20 ns must be applied to the LDAC pin to ensure proper loading of a DAC register. This allows simultaneous update of all DAC outputs. Bit C3 of the Control Configuration 3 register enables the LDAC pin. Default is with the LDAC pin controlling the loading of the DAC registers. AIN3: Analog Input. Single-ended analog input channel. Input range is 0 V to 2.28 V or 0 V to VDD. 10 INT/INT Over Limit Interrupt. The output polarity of this pin can be set to give an active low or active high interrupt when temperature, VDD, or AIN limits are exceeded. The default is active low. Open-drain output, needs a pull-up resistor. 11 DOUT/ADD DOUT: SPI Serial Data Output. Logic output. Data is clocked out of any register at this pin. Data is clocked out on the falling edge of SCLK. Open-drain output, needs a pull-up resistor. ADD: I2C Serial Bus Address Selection Pin. Logic input. A low on this pin gives the Address 1001 000; leaving it floating gives the Address 1001 010; and setting it high gives the address 1001 011. The I2C address set up by the ADD pin is not latched by the device until after this address has been sent twice. On the eighth SCL cycle of the second valid communication, the serial bus address is latched in. Any subsequent change on this pin has no effect on the I2C serial bus address. 12 SDA/DIN SDA: I2C Serial Data Input/Output. I2C serial data to be loaded into the registers of the part and read from these registers is provided on this pin. Open-drain configuration, needs a pull-up resistor. DIN: SPI Serial Data Input. Serial data to be loaded into the part’s registers is provided on this pin. Data is clocked into a register on the rising edge of SCLK. Open-drain configuration, needs a pull-up resistor. 13 SCL/SCLK Serial Clock Input. This is the clock input for the serial port. The serial clock is used to clock data out of any register of the ADT7516/ADT7517/ADT7519, and also to clock data into any register that can be written to. Open-drain configuration, needs a pull-up resistor. 14 AIN4 Analog Input. Single-ended analog input channel. Input range is 0 V to 2.28 V or 0 V to VDD. 15 VOUT-D Buffered Analog Output Voltage from DAC D. The output amplifier has rail-to-rail operation. 16 VOUT-C Buffered Analog Output Voltage from DAC C. The output amplifier has rail-to-rail operation. Rev. B | Page 10 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