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ADC128D818 Dataheets PDF



Part Number ADC128D818
Manufacturers Texas Instruments
Logo Texas Instruments
Description 12-Bit 8-Channel ADC System Monitor
Datasheet ADC128D818 DatasheetADC128D818 Datasheet (PDF)

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community ADC128D818 SNAS483F – FEBRUARY 2010 – REVISED AUGUST 2015 ADC128D818 12-Bit, 8-Channel, ADC System Monitor With Temperature Sensor, Internal – External Reference, and I2C Interface 1 Features •1 12-Bit Resolution Delta-Sigma ADC • Local Temperature Sensing • Configurable Single-Ended and/or Pseudo-Diff. Inputs • 2.56-V Internal VREF or Variable External VREF • WATCHDOG Window Comparators with Status and Ma.

  ADC128D818   ADC128D818


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Product Folder Sample & Buy Technical Documents Tools & Software Support & Community ADC128D818 SNAS483F – FEBRUARY 2010 – REVISED AUGUST 2015 ADC128D818 12-Bit, 8-Channel, ADC System Monitor With Temperature Sensor, Internal – External Reference, and I2C Interface 1 Features •1 12-Bit Resolution Delta-Sigma ADC • Local Temperature Sensing • Configurable Single-Ended and/or Pseudo-Diff. Inputs • 2.56-V Internal VREF or Variable External VREF • WATCHDOG Window Comparators with Status and Mask Registers of All Measured Values • Independent Registers for Storing Measured Values • INT Output Notifies Microprocessor of Error Event • I2C Serial Bus Interface Compatibility • 9 Selectable Addresses • TIME-OUT Reset Function to Prevent I2C Bus Lock-Up • Individual Channel Shutdown to Limit Power Consumption • Deep Shutdown Mode to Minimize Power Consumption • TSSOP 16-Lead Package • Key Specifications – ADC Resolution 12-Bit – Supply Voltage Range 3 V to 5.5 V – Total Unadjusted Error –0.45%/+0.2% – Integral Non-Linearity ±1 LSb – Differential Non-Linearity ±1 LSb – Operating Current 0.56 mA – Deep Shutdown Current 10 µA – Temperature Resolution °C/LSb – Temperature Accuracy (–40°C to 125°C) ±3°C – Temperature Accuracy (–25°C to 100°C) ±2°C 2 Applications • Communications Infrastructure • Thermal and Hardware Server Monitors • System Monitors • Industrial and Medical Systems • Electronic Test Equipment and Instrumentation • Power Supply Monitoring and Supervision 3 Description The ADC128D818 I2C system monitor is designed for maximum flexibility. The system monitor can be configured for single-ended and/or pseudo-differential inputs. An onboard temperature sensor, combined with WATCHDOG window comparators, and an interrupt output pin, INT, allow easy monitoring and out-of-range alarms for every channel. A high performance internal reference is also available to provide for a complete solution in the most difficult operating conditions. The ADC128D818’s 12-bit delta-sigma ADC supports Standard Mode (Sm, 100 kbps) and Fast Mode (Fm, 400 kbps) I2C interfaces. The ADC128D818 includes a sequencer to control channel conversions and stores all converted results in independent registers for easy microprocessor retrieval. Unused channels can be shut down independently to conserve power. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) ADC128D818 TSSOP (16) 5.00 mm × 4.40 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Typical Application Diagram LM94022 V+ VREF ADC128D818 Single-Ended Positive Voltage Internal VREF = +2.56V 10VIN Shutdown Margining Pseudo-Differential Positive Voltage DC-DC IN0 Interrupt IN1 Interrupt Masking VOUT IN2 IN3 IN4 (+) IN5 (-) 12-bit Delta-Sigma ADC Status Registers and Interrupt Control INT IN7 (+) IN6 (-) Voltage SDA Temperature Sensor I2C Interface and Control SCL A0 A1 RTRACE GND 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. ADC128D818 SNAS483F – FEBRUARY 2010 – REVISED AUGUST 2015 www.ti.com Table of Contents 1 Features .................................................................. 1 2 Applications ........................................................... 1 3 Description ............................................................. 1 4 Revision History..................................................... 2 5 Description (continued)......................................... 3 6 Pin Configuration and Functions ......................... 4 7 Specifications......................................................... 5 7.1 Absolute Maximum Ratings ...................................... 5 7.2 ESD Ratings.............................................................. 5 7.3 Recommended Operating Conditions....................... 6 7.4 Thermal Information .................................................. 6 7.5 DC Electrical Characteristics .................................... 6 7.6 AC Electrical Characteristics..................................... 9 7.7 Typical Characteristics ............................................ 10 8 Detailed Description ............................................ 14 8.1 Overview ................................................................. 14 8.2 Functional Block Diagram ....................................... 14 8.3 Feature Description................................................. 15 8.4 Device Functional Modes........................................ 16 8.5 Programming........................................................... 16 8.6 Register Maps ......................................................... 19 9 Application and Implementation ........................ 28 9.1 Application Information..................


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