Acer Aspire 7750Z Acer Aspire 7750, 7750G, 7750Z Notebook Service Guide - Page 48

Item Specification Audio Codec and Amplifier (Continued) Amplifier Build in Audio codec: Realtek ALC271X-VB3 Features  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 Audio Interface Item Audio Controller Audio onboard or optional Mono or Stereo Resolution Compatibility Sampling rate Internal microphone Internal speaker/quantity Specification Realtek ALC271X-VB3 On board Stereo Support 16/20/24bit PCM HD audio Interface Sample rate up to 192Khz resolution VSR (Variable Sampling Rate) Yes Yes/(2W speakers x2) Wireless Module 802.11b/g/n Item Chipset Data throughput Protocol Interface Specification Atheros HB95 / HB97, BCM43225, Realtek RTL8192SE The 802.11g data rate provides for 54, 48, 36, 24, 18, 12, 9, 6 Mbps, 802.11b data rate provides for 11, 5.5, 2, 1 Mbps and 802.11n high data rate (up to 300Mbps) 802.11 b+g, Drat-N PCI bus (mini PCI socket for wireless module) 1-38 Hardware Specifications and Configurations