SNWS018D December   2006  – June 2016 LMV221

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 2.7-V DC and AC Electrical Characteristics
    6. 6.6 Timing Requirements
    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 Characteristics of the LMV221
      2. 7.3.2 Accurate Power Measurement
        1. 7.3.2.1 Concept of Power Measurements
        2. 7.3.2.2 LOG-Conformance Error
        3. 7.3.2.3 Temperature Drift Error
          1. 7.3.2.3.1 Temperature Compensation
          2. 7.3.2.3.2 Differential Power Errors
    4. 7.4 Device Functional Modes
      1. 7.4.1 Shutdown
        1. 7.4.1.1 Output Behavior in Shutdown
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Functionality and Applications of RF Power Detectors
        1. 8.1.1.1 Functionality of RF Power Detectors
          1. 8.1.1.1.1 Key Characteristics of RF Power Detectors
          2. 8.1.1.1.2 Types of RF Power Detectors
            1. 8.1.1.1.2.1 Diode Detector
            2. 8.1.1.1.2.2 (Root) Mean Square (R)MS) Detector
            3. 8.1.1.1.2.3 Logarithmic Detectors
    2. 8.2 Typical Applications
      1. 8.2.1 Application With Transmit Power Control Loop
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Detector Interfacing
            1. 8.2.1.2.1.1 RF Input
            2. 8.2.1.2.1.2 Output and Reference
              1. 8.2.1.2.1.2.1 Filtering
            3. 8.2.1.2.1.3 Interface to the ADC
        3. 8.2.1.3 Application Curves
      2. 8.2.2 Application With Voltage Standing Wave Ratio (VSWR) Measurement
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 Supply Lines
        1. 10.1.1.1 Positive Supply (VDD)
        2. 10.1.1.2 Ground (GND)
      2. 10.1.2 RF Input Interface
      3. 10.1.3 Microstrip Configuration
      4. 10.1.4 GCPW Configuration
      5. 10.1.5 Reference (REF)
      6. 10.1.6 Output (OUT)
    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

12 Mechanical, Packaging, and Orderable Information

The following pages include mechanical, packaging, and orderable information. This information is the most current data available for the designated devices. This data is subject to change without notice and revision of this document. For browser-based versions of this data sheet, refer to the left-hand navigation.