Acer Aspire 7750Z - Audio Codec and Amplifier

Hardware Specifications and Configurations 1-37
Audio Codec and Amplifier
Item Specification
Audio Controller Audio codec: Realtek ALC271X-VB3
Features
 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
 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)/4 per channel output
 Short circuit and thermal overload protection for Class-D
amplifier
 48-pin QFN 'Green' package