LM49251
FEATURES
- 2 Class G Ground Referenced Headphone Outputs
- E2S Class D Amplifier
- No Clip Function
- Power Limiter Speaker Protection
- 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: 1.15 m A (Typ)
- Output Power, THD+N ≤ 1%: 20 m W (Typ)
- Stereo Class D Speaker Amplifier RL = 8Ω
- Output Power, THD+N ≤ 1%, LSVDD = 5.0V: 1.37 W (Typ)
- Output Power, THD+N ≤ 1%, LSVDD = 3.6V: 680 m W (Typ)
- Efficiency: 90% (Typ)
DESCRIPTION
The LM49251 is a fully integrated audio subsystem designed for portable handheld applications such as cellular phones. Part of TI’s Power Wise family of products, the LM49251 utilizes a high efficiency class G headphone amplifier topology as well as a high efficiency class D loudspeaker.
The headphone amplifiers feature
TI’s class G ground referenced architecture that creates a groundreferenced...
