Home Audio Audio amplifiers Headphone amps
Home
Audio
Audio amplifiers
Headphone amps

LM4924

ACTIVE

40-mW, stereo, analog input headphone amplifier with 2-cell battery operation

Order now
Data sheet

LM4924

ACTIVE
Data sheet Order now

Product details

Output power (W) 0.04 Analog supply (min) (V) 1.5 Analog supply voltage (max) (V) 3.6 Load (min) (Ω) 16 PSRR (dB) 66 Rating Catalog Operating temperature range (°C) -40 to 85 Headphone channels Stereo Volume control No Shutdown current (ISD) (µA) 0.1 Architecture Class-AB (ground-centered) Iq per channel (typ) (mA) 0.75
Output power (W) 0.04 Analog supply (min) (V) 1.5 Analog supply voltage (max) (V) 3.6 Load (min) (Ω) 16 PSRR (dB) 66 Rating Catalog Operating temperature range (°C) -40 to 85 Headphone channels Stereo Volume control No Shutdown current (ISD) (µA) 0.1 Architecture Class-AB (ground-centered) Iq per channel (typ) (mA) 0.75
VSSOP (DGS) 10 14.7 mm² 3 x 4.9
  • 2-Cell 1.5V to 3.6V Battery Operation
  • OCL Mode for Stereo Headphone Operation
  • Unity-Gain Stable
  • “Click and Pop” Suppression Circuitry for Shutdown On and Off Transients
  • Active Low Micropower Shutdown
  • Thermal Shutdown Protection Circuitry

Key Specifications

  • OCL Output Power
    • (RL = 16Ω, VDD = 3.0V, THD+N = 1%),
      40mW (Typ)
  • Micropower Shutdown Current, 0.1µA (Typ)
  • Supply Voltage Operating Range,
    1.5V < VDD < 3.6V
  • PSRR 100Hz, VDD = 3.0V, AV = 2.5, 66dB (Typ)

Boomer is a trademark of Texas Instruments. All trademarks are the property of their respective owners.

  • 2-Cell 1.5V to 3.6V Battery Operation
  • OCL Mode for Stereo Headphone Operation
  • Unity-Gain Stable
  • “Click and Pop” Suppression Circuitry for Shutdown On and Off Transients
  • Active Low Micropower Shutdown
  • Thermal Shutdown Protection Circuitry

Key Specifications

  • OCL Output Power
    • (RL = 16Ω, VDD = 3.0V, THD+N = 1%),
      40mW (Typ)
  • Micropower Shutdown Current, 0.1µA (Typ)
  • Supply Voltage Operating Range,
    1.5V < VDD < 3.6V
  • PSRR 100Hz, VDD = 3.0V, AV = 2.5, 66dB (Typ)

Boomer is a trademark of Texas Instruments. All trademarks are the property of their respective owners.

The LM4924 is a Output Capacitor-Less (OCL) stereo headphone amplifier, which when connected to a 3.0V supply, delivers 40mW per channel to a 16Ω load with less than 1% THD+N.

With the LM4924 packaged in the VSSOP and SON packages, the customer benefits include low profile and small size. These packages minimizes PCB area and maximizes output power.

The LM4924 features circuitry that reduces output transients (“clicks” and “pops”) during device turn-on and turn-off, and Mute On and Off. An externally controlled, low-power consumption, active-low shutdown mode is also included in the LM4924. Boomer audio power amplifiers are designed specifically to use few external components and provide high quality output power in a surface mount packages.

The LM4924 is a Output Capacitor-Less (OCL) stereo headphone amplifier, which when connected to a 3.0V supply, delivers 40mW per channel to a 16Ω load with less than 1% THD+N.

With the LM4924 packaged in the VSSOP and SON packages, the customer benefits include low profile and small size. These packages minimizes PCB area and maximizes output power.

The LM4924 features circuitry that reduces output transients (“clicks” and “pops”) during device turn-on and turn-off, and Mute On and Off. An externally controlled, low-power consumption, active-low shutdown mode is also included in the LM4924. Boomer audio power amplifiers are designed specifically to use few external components and provide high quality output power in a surface mount packages.
filter Find other Headphone amps
Download

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 1
Type Title Date
* Data sheet LM4924 2-Cell Batt, 40mW Per Chan Out Cap-Less OCL Stereo Hp Audio Amp datasheet (Rev. B) 06 Apr 2013

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​