LM4549B
Overview
The LM4549B device is an audio codec for PC systems which is fully compliant with the PC99 and performs the analog intensive functions of the AC '97 Rev 2.1 architecture. Using 18-bit sigma-delta ADCs and DACs, the LM4549B provides 90 dB of dynamic range.
- 1 Compliant With AC '97 Rev 2.1
- High-Quality Sample Rate Conversion from 4 kHz to 48 kHz in 1-Hz Increments
- Multiple Codec Support
- True Line Level Output with Separate Gain Control
- Texas Instrument'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
- Extended Temperature: -40°C ≤ TA ≤ 85°C
