SNAS334F August   2005  – November 2015 ADC128S022

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Timing Specifications
    7. 6.7 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Serial Interface
      2. 7.3.2 ADC128S022 Transfer Function
      3. 7.3.3 Analog Inputs
      4. 7.3.4 Digital Inputs and Outputs
    4. 7.4 Device Functional Modes
    5. 7.5 Register Maps
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curve
  9. 9 Power Supply Recommendations
    1. 9.1 Power Supply Sequence
    2. 9.2 Power Supply Noise Considerations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Device Nomenclature
        1. 11.1.1.1 Specification Definitions
    2. 11.2 Community Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
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
  • Conversion Rate: 50 ksps to 200ksps
  • DNL (VA = VD = 5 V): +1 / −0.7 LSB (Maximum)
  • INL (VA = VD = 5 V): ±1 LSB (Maximum)
  • Power Consumption
    • 3V Supply: 1.2 mW (Typical)
    • 5V Supply: 7.5 mW (Typical)

2 Applications

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

3 Description

The ADC128S022 device is a low-power, eight-channel CMOS 12-bit analog-to-digital converter specified for conversion throughput rates of 50 ksps to 200 ksps. 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 ADC128S022 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 1.2 mW and 7.5 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 ADC128S022 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 NUMBER PACKAGE BODY SIZE (NOM)
ADC128S022 TSSOP (16) 4.40 mm × 5.00 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Typical Application

ADC128S022 key_graphic_SNAS334.gif