SNAS483F February   2010  – August 2015 ADC128D818

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Description (continued)
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 DC Electrical Characteristics
    6. 7.6 AC Electrical Characteristics
    7. 7.7 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Supply Voltage (V+)
      2. 8.3.2 Voltage References (VREF)
      3. 8.3.3 Analog Inputs (IN0 - IN7)
        1. 8.3.3.1 Single-Ended Input
        2. 8.3.3.2 Pseudo-Differential Input
    4. 8.4 Device Functional Modes
      1. 8.4.1 Modes of Operation
    5. 8.5 Programming
      1. 8.5.1 Interface
        1. 8.5.1.1 Serial Bus Address
        2. 8.5.1.2 Time-out
          1. 8.5.1.2.1 Example Writes and Reads
    6. 8.6 Register Maps
      1. 8.6.1  ADC128D818 Internal Registers
      2. 8.6.2  Configuration Register — Address 00h
      3. 8.6.3  Interrupt Status Register — Address 01h
      4. 8.6.4  Interrupt Mask Register — Address 03h
      5. 8.6.5  Conversion Rate Register — Address 07h
      6. 8.6.6  Channel Disable Register — Address 08h
      7. 8.6.7  One-Shot Register — Address 09h
      8. 8.6.8  Deep Shutdown Register — Address 0Ah
      9. 8.6.9  Advanced Configuration Register — Address 0Bh
      10. 8.6.10 Busy Status Register — Address 0Ch
      11. 8.6.11 Channel Readings Registers — Addresses 20h - 27h
      12. 8.6.12 Limit Registers — Addresses 2Ah - 39h
      13. 8.6.13 Manufacturer ID Register — Address 3Eh
      14. 8.6.14 Revision ID Register — Addresses 3Fh
  9. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Digital Output (DOUT)
      2. 9.1.2 Temperature Measurement System
        1. 9.1.2.1 Temperature Limits
      3. 9.1.3 Interrupt Structure
        1. 9.1.3.1 Interrupt Output (INT)
        2. 9.1.3.2 Interrupt Clearing
        3. 9.1.3.3 Temperature Interrupt
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Power Management
        2. 9.2.2.2 Using the ADC128D818
          1. 9.2.2.2.1 Quick Start
          2. 9.2.2.2.2 Poweron Reset (POR)
          3. 9.2.2.2.3 Configuration Register (address 00h)
          4. 9.2.2.2.4 Interrupt Status Register (address 01h)
          5. 9.2.2.2.5 Interrupt Mask Register (address 03h)
          6. 9.2.2.2.6 Conversion Rate Register (address 07h)
          7. 9.2.2.2.7 One-Shot Register (address 09h)
          8. 9.2.2.2.8 Deep Shutdown Register (address 0Ah)
          9. 9.2.2.2.9 Channel Readings Registers (addresses 20h - 27h)
      3. 9.2.3 Application Curve
    3. 9.3 System Examples
      1. 9.3.1 General Voltage Monitoring
      2. 9.3.2 Voltage Monitoring for Power Supplies
      3. 9.3.3 Temperature Sensors
      4. 9.3.4 Bridge Sensors
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 Community Resources
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • 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

ADC128D818 30096301.gif