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LM49153

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1.35-W, stereo, analog input Class-AB audio amplifier with no-clip noise gate

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Data sheet

LM49153

ACTIVE
Data sheet Order now

Product details

Audio input type Analog Input Architecture Class-D Speaker channels (max) Mono Control interface I2C Output power (W) 1.35 Power stage supply (max) (V) 5.5 Power stage supply (min) (V) 2.7 THD + N at 1 kHz (%) 0.02 Load (min) (Ω) 8 Analog supply voltage (min) (V) 2.7 Analog supply voltage (max) (V) 5.5 Rating Catalog Operating temperature range (°C) -40 to 85
Audio input type Analog Input Architecture Class-D Speaker channels (max) Mono Control interface I2C Output power (W) 1.35 Power stage supply (max) (V) 5.5 Power stage supply (min) (V) 2.7 THD + N at 1 kHz (%) 0.02 Load (min) (Ω) 8 Analog supply voltage (min) (V) 2.7 Analog supply voltage (max) (V) 5.5 Rating Catalog 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).
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* Data sheet Mono Audio w/Class G Headphone Amp, Class D Spkr Amp, Noise Gate & Spkr Protect datasheet (Rev. C) 01 May 2013

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