Texas Instruments LM4546B
The LM4546B 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 LM4546B 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 2 stereo and 2 mono inputs.| Part No. | LM4546B |
|---|---|
| Datasheet | LM4546B Download |
| Manufacturer |  Texas Instruments |
| Description | Multi-Channel Audio Codec |
| Buy | Stock & Price |
FEATURES
1●2 AC '97 Rev 2.1 Compliant
● High Quality Sample Rate Conversion from 4 kHz to 48 kHz in 1 Hz Increments
● Multiple Codec Support
● 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
● Automotive Telematics 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 LM4546B provides 90 dB of Dynamic Range. Each mixer input has separate gain, attenuation and mute control and the mixers drive 1 mono and 1 stereo output, each with attenuation and mute control. The LM4546B supports Texas Instruments' 3D Sound stereo enhancement and a comprehensive sample rate conversion capability.
