LM4550B Overview
Description
The LM4550B device is an audio codec for PC systems which is fully PC99 compliant and performs the analog intensive functions of the AC '97 Rev 2.1 architecture. Using 18-bit Sigma-Delta ADCs and DACs, the LM4550B provides 90 dB of Dynamic Range.
Key Features
- 1 AC '97 Rev 2.1 Compliant
- High Quality Sample Rate Conversion From 4 kHz to 48 kHz in 1 Hz Increments
- Supports up to 6 DAC Channel Systems With Multiple LM4550Bs or With Other TI LM45xx Codecs
- Unique TI Chaining Function Shares a Single Controller SDATA_IN Pin Among Multiple Codecs
- Stereo Headphone Amp With Separate Gain Control
- TI's 3D Sound Stereo Enhancement Circuitry
- Advanced Power Management Support
- External Amplifier Power-Down (EAPD) Control
- PC Beep Passthrough to Line Out During Initialization or Cold Reset
- Digital 3.3-V and 5-V Supply Options
