SBAS480B September   2009  – October 2015 ADS1000-Q1

PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
  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 Requirements
    7. 6.7 Typical Characteristics
  7. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Analog-to-Digital Converter
      2. 7.3.2 Clock Generator
    4. 7.4 Device Functional Modes
      1. 7.4.1 Operating Modes
      2. 7.4.2 Reset and Power Up
    5. 7.5 Programming
      1. 7.5.1 I2C Interface
      2. 7.5.2 Output Code Calculation
      3. 7.5.3 ADS1000-Q1 I2C Addresses
      4. 7.5.4 I2C General Call
      5. 7.5.5 I2C Data Rates
    6. 7.6 Register Maps
      1. 7.6.1 Output Register
      2. 7.6.2 Configuration Register
      3. 7.6.3 Reading From the ADS1000-Q1
      4. 7.6.4 Writing to the ADS1000-Q1
  8. Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Basic Connections
        1. 8.1.1.1 Connecting Multiple Devices
        2. 8.1.1.2 Using GPIO Ports For I2C
        3. 8.1.1.3 Single-Ended Inputs
    2. 8.2 Typical Applications
      1. 8.2.1 ADS1000-Q1 with Current Shunt Monitor
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Part Selection
            1. 8.2.1.2.1.1 Gain Settings
            2. 8.2.1.2.1.2 Circuit Implementation
        3. 8.2.1.3 Application Curve
      2. 8.2.2 Low-Side Current Measurement
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Community Resources
    2. 11.2 Trademarks
    3. 11.3 Electrostatic Discharge Caution
    4. 11.4 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

1 Features

  • Qualified for Automotive Applications
  • Complete 12-Bit Data Acquisition System in a Tiny SOT-23 Package
  • Low Current Consumption: Only 90 μA
  • Integral Nonlinearity: 1 LSB Max
  • Single-Cycle Conversion
  • Programmable Gain Amplifier
    Gain = 1, 2, 4, or 8
  • 128-SPS Data Rate
  • I2C Interface with Two Available Addresses
  • Power Supply: 2.7 V to 5.5 V

2 Applications

  • Automotive Head Units
  • Automotive Battery Management Systems
  • Automotive On-Board Chargers
  • HEV/EV Inverters
  • NOx Sensors
  • Soot and Particulate Matter (PM) Sensors
  • Oxygen (O2, Lambda, A/F) Sensors
  • Ammonia (NH3) Sensors
  • Other Emissions and Gas Sensors

3 Description

The ADS1000-Q1 is an I2C-compatible serial interface analog-to-digital (A/D) converter with differential inputs and 12 bits of resolution in a tiny SOT23-6 package. Conversions are performed ratiometrically, using the power supply as the reference voltage. The ADS1000-Q1 operates from a single power supply ranging from 2.7 V to 5.5 V.

The ADS1000-Q1 performs conversions at a rate of 128 samples per second (SPS). The onboard programmable gain amplifier (PGA), which offers gains of up to 8, allows smaller signals to be measured with high resolution. In single-conversion mode, the ADS1000-Q1 automatically powers down after a conversion, greatly reducing current consumption during idle periods.

The ADS1000-Q1 is designed for applications where space and power consumption are major considerations. Typical applications include head units, battery management systems, on-board chargers, and emissions and gas sensors.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
ADS1000-Q1 SOT-23 (6) 1.60 mm × 2.90 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Internal Block Diagram

ADS1000-Q1 fbd_bas480.gif