Texas Instruments LM4548A
The LM4548A is an audio codec for PC systems which is fully PC98 compliant and performs the analog intensive functions of the AC '97 Rev 2 architecture. The LM4548A 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. | LM4548A |
|---|---|
| Datasheet | LM4548A Download |
| Manufacturer |  Texas Instruments |
| Description | AC97 Rev2 Multi-Channel Codec |
| Buy | Stock & Price |
FEATURES
1● AC '97 Rev 2 Compliant
● 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 Instruments' 3D Sound Stereo Enhancement Circuitry
● Advanced Power Management Support
● Digital 3.3V and 5V Supply Options
● Extended Temperature: −40°C ≤ TA ≤ 85°C
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 or Accelerator Featuring AC Link
● General and Multi-Channel Audio Frequency Systems KEY SPECIFICATIONS
● Analog Mixer Dynamic Range : 97 dB (typ)
● DAC Dynamic Range : 89 dB (typ)
● ADC Dynamic Range : 90 dB (typ)
DESCRIPTION
Using 18-bit Sigma-Delta ADCs and DACs, the LM4548A provides 90 dB of Dynamic Range. Each mixer input has separate gain, attenuation and mute control and the mixers drive 1 mono and 2 stereo outputs, each with attenuation and mute control.
