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

6.3 Electrical Characteristics VDD = 3.6V

The following specifications apply for AV = 6dB, RL = 15µH + 8Ω + 15µH, f = 1kHz unless otherwise specified. Limits apply for TA = 25°C.
SymbolParameterConditionsLM4674Units
(Limits)
Typical(5)Limit(6)(7)
VOSDifferential Output Offset VoltageVIN = 0, VDD = 2.4V to 5.0V5mV
IDDQuiescent Power Supply CurrentVIN = 0, RL = ∞,
Both channels active, VDD = 3.6V		46mA
VIN = 0, RL = ∞,
Both channels active, VDD = 5V		57.5mA
ISDShutdown CurrentVSDR = V SDL = GND0.031μA
VSDIHShutdown Voltage Input High1.4V (min)
VSDILShutdown Voltage Input Low0.4V (max)
TWUWake Up TimeVSDR/ SDL = 0.4V0.5ms
AVGainG0, G1 = GND
RL = ∞		66 ± 0.5dB
G0 = VDD, G1 = GND
RL = ∞		1212 ± 0.5dB
G0 = GND, G1 = VDD
RL = ∞		1818 ± 0.5dB
G0, G1 = VDD
RL = ∞		2424 ± 0.5dB
RINInput ResistanceAV = 6dB28kΩ
AV = 12dB18.75kΩ
AV = 18dB11.25kΩ
AV = 24dB6.25kΩ
POOutput PowerRL = 15μH + 4Ω + 15μH, THD ≤ 10%
f = 1kHz, 22kHz BW
VDD = 5V2.5W
VDD = 3.6V1.2W
VDD = 2.5V0.530W
RL = 15μH + 8Ω + 15μH, THD ≤ 10%
f = 1kHz, 22kHz BW
VDD = 5V1.5W
VDD = 3.6V0.780.6W
VDD = 2.5V0.350W
RL = 15μH + 4Ω + 15μH, THD ≤ 1%
f = 1kHz, 22kHz BW
VDD = 5V1.9W
VDD = 3.6V1W
VDD = 2.5V0.430W
RL = 15μH + 8Ω + 15μH, THD = 1%
f = 1kHz, 22kHz BW
VDD = 5V1.25W
VDD = 3.6V0.63W
VDD = 2.5V0.285W
THD+NTotal Harmonic DistortionPO = 500mW, f = 1kHz, RL = 8Ω0.07%
PO = 300mW, f = 1kHz, RL = 8Ω0.05%
PSRRPower Supply Rejection RatioVRIPPLE = 200mVP-P Sine,
fRIPPLE = 217Hz, Inputs AC GND,
Ci = 1μF, input referred		75dB
VRIPPLE = 1VP-P Sine,
fRIPPLE = 1kHz, Inputs AC GND,
Ci = 1μF, input referred		75dB
CMRRCommon Mode Rejection RatioVRIPPLE = 1VP-P
fRIPPLE = 217Hz		67dB
ηEfficiencyPO = 1W, f = 1kHz,
RL = 8Ω, VDD = 5V		85%
XtalkCrosstalkPO = 500mW, f = 1kHz84dB
SNRSignal to Noise RatioVDD = 5V, PO = 1W96dB
εOSOutput NoiseInput referred, A-Weighted Filter20μV
(1) All voltages are measured with respect to the ground pin, unless otherwise specified.
(2) The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX, θJA, and the ambient temperature, TA. The maximum allowable power dissipation is PDMAX = (TJMAX – TA)/ θJA or the number given in Absolute Maximum Ratings, whichever is lower. For the LM4674 see power derating currents for more information.
(3) Human body model, 100pF discharged through a 1.5kΩ resistor.
(4) Machine Model, 220pF–240pF discharged through all pins.
(5) Typicals are measured at 25°C and represent the parametric norm.
(6) Limits are specified to AOQL (Average Outgoing Quality Level).
(7) Datasheet min/max specification limits are specified by design, test, or statistical analysis.