92HD87 Datasheet, PDF (1/204 Pages) Integrated Device Technology – SINGLE CHIP PC AUDIO SYSTEM

DATASHEET
SINGLE CHIP PC AUDIO SYSTEM
CODEC+ STEREO SPEAKER AMPLIFIER+CAPLESS HP+LDO
92HD87
Description
Features
The 92HD87 single-chip audio system is a low power
optimized, high fidelity, 4-channel audio codec with
integrated speaker amplifier, capless headphone amplifier,
and low drop out voltage regulator.
The high integration of the 92HD87 and the 40QFN
package enables the smallest PCB footprint with the lowest
system BOM count and cost.
• 4 Channels (2 stereo DACs and 2 stereo ADCs) with
24-bit resolution
• Supports full-duplex stereo audio and simultaneous VoIP
• 2W/channel stereo speaker amplifier @ 4 ohms and
4.75V
• Two headphone amplifiers
• One capless and one non-capless retaskable
The 92HD87 provides high quality HD Audio capability to
notebook and business desktop PC applications.
• Internal LDO for digital core supply
• +5 V analog power supply option
• Dedicated BTL high pass filter for speaker
protection (RA revision only)
• Full HDA015-B low power support
• Audio inactivity transitions codec from D0 to D3 low
power mode
• Resume from D3 to D0 with audio activity in < 10 msec
• D3 to D0 transition with < -65dB pop/click
• Port presence detect in D3 with or without bit clock
• Optional analog PC beep in D3
• Additional vendor specific modes for even lower power
• Microsoft WLP premium logo compliant, as defined
in WLP 3.9
• Support for 1.5V and 3.3V HDA signaling
• Digital microphone inputs (mono or stereo)
• Aux Audio Mode (see orderable part numbers for support)
• High performance analog mixer
• 2 adjustable VREF Out pins for analog microphone
bias
• 5 analog ports with port presence detect + stereo
speaker differential output)
• Analog and digital PC Beep support
• 40-pad QFN RoHS package
IDT CONFIDENTIAL
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©2009 INTEGRATED DEVICE TECHNOLOGY, INC.
V 0.995 01/11
92HD87