Datasheet AD7416, AD7417, AD7418 (Analog Devices) - 3

Data Sheet AD7416/AD7417/AD7418
An I2C® compatible serial interface allows the AD7416/AD7417/ made. The measurable temperature range is −40°C to AD7418 registers to be written to and read back. The three +125°C. An overtemperature indicator is implemented by LSBs of the AD7416/AD7417 serial bus address can be selected, carrying out a digital comparison of the ADC code for which allows up to eight AD7416/AD7417 devices to be connected Channel 0 (temperature sensor) with the contents of the to a single bus. on-chip TOTI setpoint register. The AD7417 is available in a narrow body, 0.15 inch, 16-lead, 2. The AD7417 offers a space-saving, 10-bit analog-to-digital small outline package (SOIC) and in a 16-lead, thin shrink, solution with four external voltage input channels, an on- small outline package (TSSOP). The AD7416 and AD7418 are chip temperature sensor, an on-chip reference, and a clock available in 8-lead SOIC and MSOP packages. oscil ator. 3. The automatic power-down feature enables the AD7416/
PRODUCT HIGHLIGHTS
AD7417/AD7418 to achieve superior power performance. 1. The AD7416/AD7417/AD7418 have an on-chip temperature At slower throughput rates, the part can be programmed to sensor that al ows an accurate measurement of the ambient operate in a low power shutdown mode, allowing further temperature (±1°C at 25°C, ±2°C overtemperature) to be savings in power consumption. Rev. J | Page 3 of 23 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAMS TABLE OF CONTENTS REVISION HISTORY PRODUCT HIGHLIGHTS SPECIFICATIONS AD7417/AD7418 SPECIFICATIONS AD7416 SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TERMINOLOGY THEORY OF OPERATION CIRCUIT INFORMATION CONVERTER DETAILS TYPICAL CONNECTION DIAGRAM ANALOG INPUTS ON-CHIP REFERENCE TEMPERATURE MEASUREMENT INTERNAL REGISTER STRUCTURE Address Pointer Register Temperature Value Register (Address 0x00) Configuration Register (Address 0x01) THYST Setpoint Register (Address 0x02) TOTI Setpoint Register (Address 0x03) ADC Value Register (Address 0x04) ADC Transfer Function Config2 Register (Address 0x05) SERIAL BUS INTERFACE Serial Bus Address Writing to the AD7416/AD7417/AD7418 Reading Data From the AD7416/AD7417/AD7418 OTI OUTPUT FAULT QUEUE POWER-ON DEFAULTS OPERATING MODES Mode 1 Mode 2 CONVSTB START MODE CONVSTB Pin Mode APPLICATIONS INFORMATION SUPPLY DECOUPLING POWER-ON RESET MOUNTING THE AD7416/AD7417/AD7418 FAN CONTROLLER THERMOSTAT SYSTEM WITH MULTIPLE AD7416 DEVICES OUTLINE DIMENSIONS ORDERING GUIDE