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Audio

HOME : 제품소개 > Realtek > Audio

ALC269
제품개요

- HIGH DEFINITION AUDIO CODEC WITH EMBEDDED CLASS-D SPEAKER AMPLIFIER

제품사양

- Meets WLP (Windows Logo Program) requirements for Windows XP, Vista and Windows 7
- 98dB Signal-to-Noise Ratio (A-weighting) for DAC output
- 90dB Signal-to-Noise Ratio (A-weighting) for ADC input
- 4-channel DAC supports 16/20/24-bit PCM format for independent two stereo channel or 2.1 audio
playback
- 4-channel ADC supports 16/20/24-bit PCM format for independent two stereo channel audio inputs
- All DACs supports 44.1k/48k/96k/192kHz sample rate
- All ADCs support 44.1k/48k/96k/192kHz sample rate
- S/PDIF-OUT support 16/20/24-bit format and 44.1/48/88.2/96/192kHz rate
- Supports MONO line level output
- Supports external PCBEEP input and built-in digital BEEP generator
- Software selectable 2.5V/3.2V VREFOUT as bias voltage for analog microphone input
- Programmable +12/+24/+36dB boost gain for analog microphone input
- Supports stereo digital microphone input
- Programmable boost gain and volume control for digital microphone input
- Built-in headphone amplifiers for port-C (LINE1) and port-I (HP OUT)
- Headphone amplifier for port-I does not require DC blocking capacitors
- Two jack detection pins each designed to detect up to 4 jacks, and S/PDIF-OUT jack detection is
supported
- 2 GPIOs are supported for customized applications (pin shared with digital microphone interface)
- EAPD (External Amplifier Power Down) is supported
- Supports Anti-pop mode when analog power AVDD is on and digital power is off
- Support PC-Beep to internal speaker out (Port D) when no HDA control, while AVDD and PVDD is
supplied.
- Power support: 3.3V digital core power; 1.5V~3.3V digital IO power for HDA link; 3.0V~5.5V
analog power; 4.5V~5.5V power stage voltage
- Enhanced power management features for normal operation and standby mode
- Stereo Bridge-Tied Load Class-D amplifier at port-D has 2Watt (rms)/4Ω per channel output
- Short circuit and thermal overload protection for Class-D amplifier
- Class D amplifier has high pass filter with programmable Cut-Off frequency (10Hz~900Hz) to
prevent low frequency signal damage speaker
- Class D amplifier output with slew rate and spread spectrum control to improve EMI performance
- Independent left and right channel of output power limiter (25%~100% power range) to protect
speaker
- Intel low power ECR compliant: supports power status control, jack detection, and wake-up event in
D3 mode
- Built in a 5V-to-4.5V linear regulator with 60dB PSRR to power analog circuitry
- 48-pin QFN ‘Green’ package

주요 Application

- Multimedia desktop and laptop PCs
- Netbook and MID (Mobile Internet Device) with High Definition Audio Controller