Product details

Audio input type Analog Input Architecture Class-D Speaker channels (max) Mono Rating Catalog Power stage supply (max) (V) 5.5 Power stage supply (min) (V) 2.7 Load (min) (Ω) 8 Output power (W) 1.35 SNR (dB) 98 THD + N at 1 kHz (%) 0.02 Iq (typ) (mA) 1.2 Control interface I2C Closed/open loop Open Analog supply (min) (V) 2.7 Analog supply voltage (max) (V) 5.5 PSRR (dB) 94 Operating temperature range (°C) -40 to 85
Audio input type Analog Input Architecture Class-D Speaker channels (max) Mono Rating Catalog Power stage supply (max) (V) 5.5 Power stage supply (min) (V) 2.7 Load (min) (Ω) 8 Output power (W) 1.35 SNR (dB) 98 THD + N at 1 kHz (%) 0.02 Iq (typ) (mA) 1.2 Control interface I2C Closed/open loop Open Analog supply (min) (V) 2.7 Analog supply voltage (max) (V) 5.5 PSRR (dB) 94 Operating temperature range (°C) -40 to 85
DSBGA (YFQ) 25 4.84 mm² 2.2 x 2.2
  • Class G Ground Referenced Headphone Outputs
  • High Efficiency Class D Amplifier with Spread Spectrum
  • No Clip
  • Speaker Protection
  • Noise Gate
  • I2C Volume and Mode Control
  • Advanced Click-and-Pop Suppression
  • Micro-Power Shutdown

Key Specifications

  • Class G Headphone Amplifier,
    HPVDD = 1.8V, RL = 32Ω
    • IDDQHP, 1.2mA (Typ)
    • POUT, THD+N ≤ 1%, 25mW (Typ)
    • HP VOS, 0.5mV (Typ)
  • Mono Class D Speaker Amplifier,
    RL = 8Ω, THD+N < 1%
    • POUT, LSVDD = 5.0V, 1.35W (Typ)
    • POUT, LSVDD = 3.6V, 680mW (Typ)
    • Efficiency 88% (Typ)

All trademarks are the property of their respective owners.

  • Class G Ground Referenced Headphone Outputs
  • High Efficiency Class D Amplifier with Spread Spectrum
  • No Clip
  • Speaker Protection
  • Noise Gate
  • I2C Volume and Mode Control
  • Advanced Click-and-Pop Suppression
  • Micro-Power Shutdown

Key Specifications

  • Class G Headphone Amplifier,
    HPVDD = 1.8V, RL = 32Ω
    • IDDQHP, 1.2mA (Typ)
    • POUT, THD+N ≤ 1%, 25mW (Typ)
    • HP VOS, 0.5mV (Typ)
  • Mono Class D Speaker Amplifier,
    RL = 8Ω, THD+N < 1%
    • POUT, LSVDD = 5.0V, 1.35W (Typ)
    • POUT, LSVDD = 3.6V, 680mW (Typ)
    • Efficiency 88% (Typ)

All trademarks are the property of their respective owners.

The LM49153 is a fully integrated audio subsystem designed for portable handheld applications such as cellular phones. Part of Texas Instruments' PowerWise family of products, the LM49153 combines an earpiece switch, a high efficiency 25mW class G headphone amplifier, and a high efficiency 1.35W class D loudspeaker into a single device.

The headphone amplifiers feature Texas Instruments' class G ground referenced architecture that creates a ground-referenced output with dynamic supply rails for optimum efficiency. The class D amplifier features an ALC (Automatic Level Control) with a noise gate that provides both no-clip and speaker protection.

Mode selection, shutdown control, and volume are controlled through an I2C compatible interface.

Click and pop suppression eliminates audible transients on power-up/down and during shutdown. The LM49153 is available in an ultra-small 25-bump 0.4mm pitch DSBGA package (2.30mm x 2.42mm).

The LM49153 is a fully integrated audio subsystem designed for portable handheld applications such as cellular phones. Part of Texas Instruments' PowerWise family of products, the LM49153 combines an earpiece switch, a high efficiency 25mW class G headphone amplifier, and a high efficiency 1.35W class D loudspeaker into a single device.

The headphone amplifiers feature Texas Instruments' class G ground referenced architecture that creates a ground-referenced output with dynamic supply rails for optimum efficiency. The class D amplifier features an ALC (Automatic Level Control) with a noise gate that provides both no-clip and speaker protection.

Mode selection, shutdown control, and volume are controlled through an I2C compatible interface.

Click and pop suppression eliminates audible transients on power-up/down and during shutdown. The LM49153 is available in an ultra-small 25-bump 0.4mm pitch DSBGA package (2.30mm x 2.42mm).

Download View video with transcript Video

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 Mono Audio w/Class G Headphone Amp, Class D Spkr Amp, Noise Gate & Spkr Protect datasheet (Rev. C) 01 May 2013

Design & development

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

Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
Package Pins Download
DSBGA (YFQ) 25 View options

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

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

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