SNAS344F December   2005  – June 2025 LM4674

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Key Specifications
  5. 4 DESCRIPTION
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 Operating Ratings
    3. 6.3 Electrical Characteristics VDD = 3.6V
    4. 6.4 Typical Performance Characteristics
  8. 7 Block Diagrams
  9. 8 Application Information
    1. 8.1  General Amplifier Function
    2. 8.2  Differential Amplifier Explanation
    3. 8.3  Power Dissipation and Efficency
    4. 8.4  Shutdown Function
    5. 8.5  Single-Ended Audio Amplifier Configuration
    6. 8.6  Audio Amplifier Power Supply Bypassing/Filtering
    7. 8.7  Audio Amplifier Input Capacitor Selection
    8. 8.8  Audio Amplifier Gain Setting
    9. 8.9  Output Filter Considerations
    10. 8.10 Layout Guidelines
    11. 8.11 LM4674TL Demo Board Schematic
    12. 8.12 LM4674TL Demonstration Board Layout
    13. 8.13 LM4674SQ Demo Board Schematic
    14. 8.14 LM4674SQ Demonstration Board Layout
    15. 8.15 Trademarks
  10. 9 Typical Application
  11. 10Development Support
    1. 10.1 Third-Party Products Disclaimer
    2. 10.2 Device Nomenclature Boilerplate
  12. 11Receiving Notification of Documentation Updates
  13. 12Electrostatic Discharge Caution
  14. 13Glossary
  15. 14Revision History
  16. 15Mechanical, Packaging, and Orderable Information

6.4 Typical Performance Characteristics

LM4674 THD+N vs Output Power f = 1kHz, AV = 24dB, RL = 8ΩFigure 6-1 THD+N vs Output Power
f = 1kHz, AV = 24dB, RL = 8Ω
LM4674 THD+N vs Output Power f= 1kHz, AV = 24dB, RL = 4ΩFigure 6-3 THD+N vs Output Power
f= 1kHz, AV = 24dB, RL = 4Ω
LM4674 THD+N vs Frequency VDD = 2.5V, POUT = 100mW/ch, RL = 8ΩFigure 6-5 THD+N vs Frequency
VDD = 2.5V, POUT = 100mW/ch, RL = 8Ω
LM4674 THD+N vs Frequency VDD = 5V, POUT = 375mW/ch, RL = 8ΩFigure 6-7 THD+N vs Frequency
VDD = 5V, POUT = 375mW/ch, RL = 8Ω
LM4674 THD+N vs Frequency VDD = 3.6V, POUT = 250mW/ch, RL = 4ΩFigure 6-9 THD+N vs Frequency
VDD = 3.6V, POUT = 250mW/ch, RL = 4Ω
LM4674 Efficiency vs Output Power/channel RL = 4Ω, f = 1kHzFigure 6-11 Efficiency vs Output Power/channel
RL = 4Ω, f = 1kHz
LM4674 Power Dissipation vs Output Power RL = 4Ω, f = 1kHzFigure 6-13 Power Dissipation vs Output Power
RL = 4Ω, f = 1kHz
LM4674 Output Power/channel vs Supply Voltage RL = 4Ω, f = 1kHzFigure 6-15 Output Power/channel vs Supply Voltage
RL = 4Ω, f = 1kHz
LM4674 PSRR vs Frequency VDD = 3.6V, VRIPPLE= 200mVP-P, RL = 8ΩFigure 6-17 PSRR vs Frequency
VDD = 3.6V, VRIPPLE= 200mVP-P, RL = 8Ω
LM4674 CMRR vs Frequency VDD = 3.6V, VCM = 1VP-P, RL = 8ΩFigure 6-19 CMRR vs Frequency
VDD = 3.6V, VCM = 1VP-P, RL = 8Ω
LM4674 THD+N vs Output Power f = 1kHz, AV = 6dB, RL = 8ΩFigure 6-2 THD+N vs Output Power
f = 1kHz, AV = 6dB, RL = 8Ω
LM4674 THD+N vs Output Power f = 1kHz, AV = 6dB, RL = 4ΩFigure 6-4 THD+N vs Output Power
f = 1kHz, AV = 6dB, RL = 4Ω
LM4674 THD+N vs Frequency VDD = 3.6V, POUT = 250mW/ch, RL = 8ΩFigure 6-6 THD+N vs Frequency
VDD = 3.6V, POUT = 250mW/ch, RL = 8Ω
LM4674 THD+N vs Frequency VDD = 2.5V, POUT = 100mW/ch, RL = 4ΩFigure 6-8 THD+N vs Frequency
VDD = 2.5V, POUT = 100mW/ch, RL = 4Ω
LM4674 THD+N vs Frequency VDD = 5V, POUT = 375mW/ch, RL = 4ΩFigure 6-10 THD+N vs Frequency
VDD = 5V, POUT = 375mW/ch, RL = 4Ω
LM4674 Efficiency vs Output Power/channel RL = 8Ω, f = 1kHzFigure 6-12 Efficiency vs Output Power/channel
RL = 8Ω, f = 1kHz
LM4674 Power Dissipation vs Output Power RL = 8Ω, f = 1kHzFigure 6-14 Power Dissipation vs Output Power
RL = 8Ω, f = 1kHz
LM4674 Output Power/channel vs Supply Voltage RL = 8Ω, f = 1kHzFigure 6-16 Output Power/channel vs Supply Voltage
RL = 8Ω, f = 1kHz
LM4674 Crosstalk vs Frequency VDD = 3.6V, VRIPPLE = 1VP-P, RL = 8ΩFigure 6-18 Crosstalk vs Frequency
VDD = 3.6V, VRIPPLE = 1VP-P, RL = 8Ω
LM4674 Supply Current vs Supply Voltage RL = ∞Figure 6-20 Supply Current vs Supply Voltage
RL = ∞