Datasheet Details
| Part number | LM4550 |
|---|---|
| Manufacturer | National Semiconductor (Texas Instruments) |
| File Size | 507.06 KB |
| Description | AC97 Multi-Channel Audio Codec |
| Datasheet |
 LM4550 Datasheet
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General Description
The LM4550 is an audio codec for PC systems which is fully PC99 compliant and performs the analog intensive functions of the AC97 Rev2.1 architecture.
Using 18-bit Sigma-Delta A/D’s and D/A’s, the LM4550 provides 90 dB of Dynamic Range.
Key Features
- full duplex stereo A/D’s and D/A’s and an analog mixer with 4 stereo and 3 mono inputs, each of which has separate gain, attenuation and mute control. The LM4550 provides a stereo headphone amplifier with an independent gain control and also supports National’s 3D Sound stereo enhancement and variable sample rate conversion. The sample rate for the A/D and D/A can be programmed separately with a resolution of 1 Hz to convert any rate between 4 kHz.
- 48 kHz. The LM4550 features the ability.