SNAS298G August 2005  – January 2015 ADC128S102

PRODUCTION DATA. 

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
  6. Specifications
    1. 6.1Absolute Maximum Ratings
    2. 6.2ESD Ratings
    3. 6.3Recommended Operating Conditions
    4. 6.4Thermal Information
    5. 6.5Electrical Characteristics
    6. 6.6Timing Specifications
    7. 6.7Typical Characteristics
  7. Detailed Description
    1. 7.1Overview
    2. 7.2Functional Block Diagram
    3. 7.3Feature Description
      1. 7.3.1ADC128S102 Operation
      2. 7.3.2ADC128S102 Transfer Function
      3. 7.3.3Analog Inputs
      4. 7.3.4Digital Inputs and Outputs
    4. 7.4Device Functional Modes
    5. 7.5Programming
      1. 7.5.1Serial Interface
  8. Application and Implementation
    1. 8.1Application Information
    2. 8.2Typical Application
      1. 8.2.1Design Requirements
      2. 8.2.2Detailed Design Procedure
      3. 8.2.3Application Curve
  9. Power Supply Recommendations
    1. 9.1Power Supply Sequence
    2. 9.2Power Supply Noise Considerations
  10. 10Layout
    1. 10.1Layout Guidelines
    2. 10.2Layout Example
  11. 11Device and Documentation Support
    1. 11.1Device Support
      1. 11.1.1Specification Definitions
    2. 11.2Trademarks
    3. 11.3Electrostatic Discharge Caution
    4. 11.4Glossary
  12. 12Mechanical, Packaging, and Orderable Information

1 Features

  • Eight Input Channels
  • Variable Power Management
  • Independent Analog and Digital Supplies
  • SPI/QSPI™/MICROWIRE™/DSP Compatible
  • Packaged in 16-Lead TSSOP
  • Key Specifications
    • Conversion Rate 500 ksps to 1 MSPS
    • DNL (VA = VD = 5.0 V) +1.5 / −0.9
    • LSB (maximum) INL (VA = VD = 5.0 V) ±1.2 LSB (maximum)
    • Power Consumption
      • 3V Supply 2.3 mW (typical)
      • 5V Supply 10.7 mW (typical)

2 Applications

  • Automotive Navigation
  • Portable Systems
  • Medical Instruments
  • Mobile Communications
  • Instrumentation and Control Systems

3 Description

The ADC128S102 is a low-power, eight-channel CMOS 12-bit analog-to-digital converter specified for conversion throughput rates of 500 ksps to 1 MSPS. The converter is based on a successive-approximation register architecture with an internal track-and-hold circuit. It can be configured to accept up to eight input signals at inputs IN0 through IN7.

The output serial data is straight binary and is compatible with several standards, such as SPI, QSPI, MICROWIRE, and many common DSP serial interfaces.

The ADC128S102 may be operated with independent analog and digital supplies. The analog supply (VA) can range from +2.7 V to +5.25 V, and the digital supply (VD) can range from +2.7 V to VA. Normal power consumption using a +3-V or +5-V supply is 2.3 mW and 10.7 mW, respectively. The power-down feature reduces the power consumption to 0.06 µW using a +3-V supply and 0.25 µW using a +5-V supply.

The ADC128S102 is packaged in a 16-lead TSSOP package. Operation over the extended industrial temperature range of −40°C to +105°C is ensured.

Device Information(1)

PART NUMBERPACKAGEBODY SIZE (NOM)
ADC128S102TSSOP (16)5.00 mm x 4.40 mm
  1. For all available packages, see the orderable addendum at the end of the datasheet.

Simplified Schematic

keygraphic_snas298.gif