Texas Instruments LM4550B
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. The LM4550B was designed specifically to provide a high quality audio path and provide all analog functionality in a PC audio system. It features full duplex stereo ADCs and DACs and analog mixers with access to 4 stereo and 4 mono inputs.| Part No. | LM4550B |
|---|---|
| Datasheet | LM4550B Download |
| Manufacturer |  Texas Instruments |
| Description | Multi-Channel Audio Codec |
| Buy | Stock & Price |
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
● Extended Temperature: −40°C ≤ TA ≤ 85°C
● Key specifications – Analog Mixer Dynamic Range, 97 dB (Typical) – DAC Dynamic Range, 89 dB (Typical) – ADC Dynamic Range, 90 dB (Typical) – Headphone Amp THD+N at 50 mW, 0.02% (Typical) into 32Ω 2
APPLICATIONS
● Desktop PC Audio Systems on PCI Cards, AMR Cards, or With Motherboard Chips Sets Featuring AC Link● Portable PC Systems as on MDC Cards, or with a Chipset...
