2 SPI-/I C-Compatible, 10-Bit Digital Temperature Sensor and 8-Channel ADC Data Sheet ADT7411 FEATURES PIN CONFIGURATION 10-bit temperature-to-digital converter AIN6 1 16 AIN7 10-bit 8-channel ADC AIN5 2 15 AIN8 DC input bandwidth NC 3 ADT7411 14 AIN4 Input range: 0 V to 2.25 V and 0 V to VDD TOP VIEW CS 4 13 SCL/SCLK (Not to Scale) Temperature range: 40C to +120C GND 5 12 SDA/DIN Temperature sensor accuracy of 0.5C 6 11 V DOUT/ADD DD Supply range: 2.7 V to 5.5 V 7 10 D+/AIN1 INT/INT Power-down current : <10 A 8 9 D/AIN2 AIN3 Internal 2.25 V option REF Double-buffered input logic NC = NO CONNECT 2 I C, SPI, QSPI, MICROWIRE, and DSP compatible Figure 1. 4-wire serial interface SMBus packet error checking (PEC) compatible 16-lead QSOP APPLICATIONS Portable battery-powered instruments PCs Smart battery chargers Telecommunications systems electronic test equipment Domestic appliances Process controls GENERAL DESCRIPTION 1 The ADT7411 combines a 10-bit temperature-to-digital The ADT7411s wide supply voltage range, low supply current, 2 converter and a 10-bit 8-channel ADC in a 16-lead QSOP. This and SPI-/I C-compatible interface make it ideal for a variety of includes a band gap temperature sensor and a 10-bit ADC to applications, including PCs, office equipment, and domestic monitor and digitize the temperature reading to a resolution of appliances. 0.25C. The ADT7411 operates from a single 2.7 V to 5.5 V supply. The input voltage on the ADC channels has a range of 0 V to 2.25 V and the input bandwidth is dc. The reference for the ADC channels is derived internally. The ADT7411 provides two serial interface options: a 4-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP interface standards, 2 and a 2-wire SMBus/I C interface. It features a standby mode that is controlled via the serial interface. 1 Protected by U.S. Patent Numbers: 6,169,442 5,867,012 5,764174. Other patents pending. Rev. C Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 20032017 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Technical Support www.analog.com Trademarks and registered trademarks are the property of their respective owners. 02882-005ADT7411 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Theory of Operation ...................................................................... 13 Applications ....................................................................................... 1 Power-Up Calibration ................................................................ 13 Pin Configuration ............................................................................. 1 Conversion Speed ....................................................................... 13 General Description ......................................................................... 1 Functional Description .................................................................. 14 Revision History ............................................................................... 2 Analog Inputs ............................................................................. 14 Specif icat ions ..................................................................................... 3 Functional DescriptionMeasurement.................................. 15 Functional Block Diagram .............................................................. 6 ADT7411 Registers .................................................................... 19 Absolute Maximum Ratings ............................................................ 7 Serial Interface ............................................................................ 29 ESD Caution .................................................................................. 7 Outline Dimensions ....................................................................... 35 Pin Configuration and Functional Descriptions .......................... 8 Ordering Guide .......................................................................... 35 Terminology ...................................................................................... 9 Typical Performance Characteristics ........................................... 10 REVISION HISTORY 6/2017Rev. B to Rev . C Changes to Internal TLOW Limit Register (Read/Write) Change to Note 1 .............................................................................. 1 Address = 26h Section ................................................................ 26 Changes to Theory of Operation Section .................................... 13 Changes to External T /AIN1 V Limit Register HIGH HIGH Change to Table 7 ........................................................................... 22 (Read/Write) Address = 27h Section ........................................ 26 Change to Table 28 ......................................................................... 25 Changes to External T /AIN1 V Limit Register LOW LOW Change to Table 32 ......................................................................... 26 (Read/Write) Address = 28h Section ........................................ 26 Updated Outline Dimensions ....................................................... 35 Changes to Serial Interface Selection Section ............................. 29 Changes to Ordering Guide .......................................................... 35 Changes to SPI Serial Interface Section ....................................... 30 Changes to Read Operation Section ............................................ 32 12/2006Rev. A to Rev. B Changes to Ordering Guide .......................................................... 35 Updated Format .................................................................. Universal Changes to Features .......................................................................... 1 3/2004Rev. 0 to Rev. A Changes to Table 1 ............................................................................ 3 Format Updated .................................................................. Universal Changes to Table 2 ............................................................................ 7 Change to Equation ........................................................................ 17 Changes to Theory of Operation Section .................................... 13 8/2003Revision 0: Initial Version Changes to Figure 20 ...................................................................... 14 Changes to Table 7 .......................................................................... 20 Changes to Table 16 Title ............................................................... 22 Changes to Internal T Limit Register (Read/Write) HIGH Address = 25h Section ................................................................ 25 Rev. C Page 2 of 36