LM49153
FEATURES
- 23 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
APPLICATIONS
- Feature
Phones
- Smart Phones
KEY SPECIFICATIONS
- Class G Headphone Amplifier, HPVDD = 1.8V, RL = 32Ω
- IDDQHP, 1.2m A (Typ)
- POUT, THD+N ≤ 1%, 25m W (Typ)
- HP VOS, 0.5m V (Typ)
- Mono Class D Speaker Amplifier, RL = 8Ω, THD+N < 1%
- POUT, LSVDD = 5.0V, 1.35W (Typ)
- POUT, LSVDD = 3.6V, 680m W (Typ)
- Efficiency 88% (Typ)
DESCRIPTION
The LM49153 is a fully integrated audio subsystem designed for portable handheld applications such as cellular phones. Part of Texas Instruments' Power Wise family of products, the LM49153 bines an earpiece switch, a high efficiency 25m W 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...
