ALC887 Datasheet – 7.1 Channel Audio Codec – Realtek

This is a kind of audio codec.

Part Number : ALC887, ALC887-GR


Package : LQFP-48 Type

Manufactures : Realtek Semiconductor ( )

See the preview image and the PDF file for more information.


ALC887 audio codec realtek

The ALC887 is a 7.1 Channel High Definition Audio Codec with two independent SPDIF outputs. Featuring eight channels of DAC support 7.1 sound playback, and integrates two stereo ADC that can support a stereo microphone, and feature Acoustic Echo Cancellation (AEC), Beam Forming (BF), and Noise Suppression (NS) for voice applications.  ALC887 is designed not only to meet the premium audio performance requirements in current WLP3.10 (Windows Logo Program), but provides better characteristics for future WLP. That brings user real high fidelity of sound quality.


ALC887 Pinout

ALC887 datasheet pinout
Hardware Features

1. Meets premium audio requirements for Microsoft WLP 3.10
2. Meets stricter performance requirements for future WLP
3. High-performance DACs with 97dB Signal-to-Noise Ratio (SNR), ADCs with 90dB SNR
4. Four stereo DACs (8 channels) support 16/20/24-bit PCM format for 7.1 sound playback.
5. Two stereo ADCs (4 channels) support 16/20/24-bit PCM format recording simultaneously
6. All DACs supports 16/20/24-bit, 44.1k/48k/96k/192kHz sample rate


Software Features

1. Meets Microsoft WLP 3.10 and future WLP audio requirements
2. WaveRT based audio function driver for Windows Vista
3. EAX 1.0 & 2.0 compatible, especially the EAX effect is supported in Windows Vista
4. Direct Sound 3D™ compatible
5. Emulation of 26 sound environments to enhance gaming experience
6. Multi bands of software equalizer and tool are provided
7. Voice Cancellation and Key Shifting effect


Official Homepage :

Reference Site : OS X Realtek ALC887 Onboard Audio ( )

ALC887 Datasheet

ALC887 pdf


IR2125 Datasheet – Current limiting single channel driver

Part Number : IR2125

Function : Current limiting single channel driver

Manufacturers : International Rectifier, ( )

Pinouts :

IR2125 datasheet

The IR2125(S) is a high voltage, high speed power MOSFET and IGBT driver with over-current limiting protection circuitry. Proprietary HVIC and latch immune CMOS technologies enable ruggedized monolithic construction. Logic inputs are compatible with standard CMOS or LSTTL outputs, down to 2.5V logic. The output driver features a high pulse currentbuffer stage designed for minimum driver cross-conduction. The protection circuitry detects over-current in the driven power transistor and limits the gate drive voltage. Cycle by cycle shutdown is programmed by an external capacitor which directly controls the time interval between detection of the over-current limiting conditions and latched shutdown. The floating channel can be used to drive an N-channel power MOSFET or IGBT in the high or low side configuration which operates up to 500 volts.

• Floating channel designed for bootstrap operation Fully operational to +500V Tolerant to negative transient voltage dV/dt immune
• Gate drive supply range from 12 to 18V
• Undervoltage lockout
• Current detection and limiting loop to limit driven power transistor current
• Error lead indicates fault conditions and programs shutdown time
• Output in phase with input
• 2.5V, 5V and 15V input logic compatible
• Also available LEAD-Free


IR2125 Datasheet PDF Download

IR2125 pdf

Other data sheets within the file : IR2125PbF, IR2125S, IR2125SPbF