LM48824

ACTIVE

Class G Headphone Amplifier with I2C Volume Control

Top

Product details

Parameters

We are not able to display this information. Please refer to the product data sheet.

Package | Pins | Size

DSBGA (YFQ) 16 0 mm² 1.725 x 1.725 open-in-new Find other Headphone amps

Features

  • Class G Power Savings
  • Ground Referenced Headphone Outputs – Eliminates Output Coupling Capacitors
  • Common-Mode Sense
  • I2C Volume and Mode Control
  • High Output Impedance in Shutdown
  • Differential Inputs
  • Advanced Click-and-Pop Suppression
  • Low Supply Current
  • Low THD Mode Option

Key Specifications

  • Quiescent Power Supply Current at 3.6V: 0.9mA (typ)
  • Output Power/Channel at VDD = 3.6V (RL = 16Ω, THD+N ≤ 1%): 37 mW (Typ)
  • Output Power/Channel at VDD = 3.6V (RL = 32Ω, THD+N ≤ 1%): 29 mW (Typ)
  • PSRR at 217Hz: 100 dB (Typ)
  • Shutdown Current: 2.5 μA (Typ)

All trademarks are the property of their respective owners.

open-in-new Find other Headphone amps

Description

The LM48824 is a Class G, ground-referenced stereo headphone amplifier designed for portable devices. The LM48824 features TI’s ground-referenced architecture, which eliminates the large DC blocking capacitors required by traditional headphone amplifiers, saving board space and minimizing system cost.

The LM48824 takes advantage of TI’s patent-pending Class G architecture offering power savings compared to a traditional Class AB headphone amplifier. Additionally, output noise is improved by common-mode sensing that corrects for any differences between the amplifier ground and the potential at the headphone return terminal, minimizing noise created by any ground mismatches.

A high output impedance mode allows the LM48824's outputs to be driven by an external source without degrading the signal. Other features include flexible power supply requirements, differential inputs for improved noise rejection, a low power (2.5μA) shutdown mode, and a 32-step I2C volume control with mute function.

The LM48824's superior click and pop suppression eliminates audible transients on power-up/down and during shutdown. The LM48824 is available in an ultra-small 16-bump, 0.4mm pitch DSBGA package (1.69mm x 1.69mm)

open-in-new Find other Headphone amps
Download

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 2
Type Title Date
* Datasheet LM48824 Class G Headphone Amplifier with I 2 C Volume Control datasheet (Rev. D) May 03, 2013
Application notes PowerWiseë Class G versus Class AB Headphone Amplifiers Jun. 11, 2009

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

GUIS FOR EVALUATION MODULES (EVM) Download

Design tools & simulation

SIMULATION TOOLS Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

CAD/CAE symbols

Package Pins Download
DSBGA (YFQ) 16 View options

Ordering & quality

Support & training

TI E2E™ forums with technical support from TI engineers

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. ​​​​​​​​​​​​​​

Videos

Related videos