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Class G Headphone Amplifier with I2C Volume Control

Inventory: 8,750

Quality information

RoHS Yes
Lead finish / Ball material SNAGCU
MSL rating / Peak reflow Level-1-260C-UNLIM
Material content View
DPPM / MTBF / Fit rate View
Qualification summary View
Ongoing reliability monitoring View
Device marking View

Packaging information

Package | Pins Package qty | Carrier Operating temperature range (°C)
DSBGA (YFQ) | 16 250 | SMALL T&R
I (-40 to 85)
Package | Pins DSBGA (YFQ) | 16
Package qty | Carrier 250 | SMALL T&R
Operating temperature range (°C) I (-40 to 85)
View TI packaging information

Features for the LM48824

  • 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)

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Description for the LM48824

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)


Qty Price (USD)
1-99 $1.239
100-249 $1.023
250-999 $0.735
1,000+ $0.553

Additional package qty | carrier options

Package qty | Carrier 3,000 | LARGE T&R
Inventory 12,000
Qty | Price (USD) 1ku | $0.480 1-99 $1.075 100-249 $0.888 250-999 $0.638 1,000+ $0.480
Custom reel may be available