STAC9250 Datasheet, PDF (1/137 Pages) Integrated Device Technology – TWO-CHANNEL HD AUDIO CODEC WITH MODEM & DUAL DIGITAL MICROPHONE INTERFACES

DATA SHEET
TWO-CHANNEL HD AUDIO CODEC WITH MODEM
& DUAL DIGITAL MICROPHONE INTERFACES
STAC9250/9251
DESCRIPTION
The STAC9250/9251 are high fidelity, 2-channel audio CODECs
compliant with the High Definition Audio (HD Audio) specification
defined by Intel. The STAC9250/9251 enables a two-chip audio
and modem implementation by integrating the “System Side”
functionality of Silicon Labs’ modem solution. The STAC9250/
9251 provides a direct interface to Silicon Labs’ “Line Side” inte-
grated circuit. This integration results in cost savings without sac-
rificing audio fidelity or modem functionality. The STAC9251 also
implements a direct interface to two digital microphones, support-
ing advanced beam forming applications and resulting in
increased quality of voice applications.
FEATURES
• High-integration HD Audio Product
• 2-channel PC Audio CODEC
• Modem “System-side” functionality¹
• Dual Digital Microphone interface(STAC9251)
• Two-Channel DACs and ADCs with 24-bit sample
resolution
• High performance Σ∆ technology
• Sample rates up to 192 KHz
• 100dB DAC SNR
1. Modem functionality can only be used with a “Line
Side” DAA integrated circuit, Si3080 or similar, available
from Silicon Labs (www.silabs.com).
• Integrated modem functionality from Silicon Labs¹
supports reduced BOM costs
• Interfaces directly to Line Side integrated circuit from
Silicon Labs
• Supports two-chip audio plus modem functionality
• Supports Software modem implementations from
Motorola and others compatible with the Silicon Labs
chipset
• Supports Motherboard implementations eliminating MDC
card and connector costs
• Reduced board space
• Reduced external component count
• Integrated Headphone Amps
• Stereo Analog Microphone
• Supports Stereo Microphone
• Microphone Boost 0, 10, 20, 30, 40dB
•
• S/PDIF In and Out
• Universal Jacks™ Functionality for jack retasking
• Adjustable VREF Out
• Digital PC Beep to all outputs
• 48-pin LQFP Environmental Package
• Two-Channel High Definition Audio CODEC with
Modem and Dual Digital Microphone Interfaces
IDT™
1
TWO-CHANNEL HD AUDIO CODEC WITH MODEM & DUAL DIGITAL MICROPHONE INTERFACES
STAC9250/9251
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