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AD1981HD

Analog Devices
Part Number AD1981HD
Manufacturer Analog Devices
Description HD Audio SoundMAX Codec
Published Jan 16, 2007
Detailed Description www.DataSheet4U.com HD Audio SoundMAX® Codec AD1981HD FEATURES 2 DAC channels: 16-, 20-, or 24-bit 2 ADC channels: 16- ...
Datasheet PDF File AD1981HD PDF File

AD1981HD
AD1981HD

Overview
www.
DataSheet4U.
com HD Audio SoundMAX® Codec AD1981HD FEATURES 2 DAC channels: 16-, 20-, or 24-bit 2 ADC channels: 16- or 20-bit HD audio sample rates 8 kHz, 11.
025 kHz, 16 kHz, 22.
05 kHz, 32 kHz, 44.
1 kHz, 48 kHz Greater than 90 dB dynamic range S/PDIF output: 32 kHz, 44.
1 kHz or 48 kHz, 16- or 24-bit Digital beep and analog PC beep pass-through Integrated headphone amplifiers on two ports Port retasking Selectable microphone and line inputs Full analog mixer Legacy inputs: CD and auxiliary inputs External amplifier power-down (EAPD) 48-pin, Pb-free LQFP ENHANCED FEATURES No AFILT pins, results in BOM savings 5.
0 V AVDD supply, 3.
3 V DVDD supply Jack-sensing autoconfiguration options Mute line output and monaural output (MONO_OUT) when headphones are used Mute MONO_OUT when a device is in the line out jack Selectable trip level: high/low supports all jack types Peripheral identification/enumeration Jack event/presence detection using SENSE or GPIO pins Microphone to MONO_OUT for speakerphone applications Advanced power management modes 4 software-controlled microphone bias pins Up to 30 dB microphone boost 4 GPIOs—external control or traditional jack sense FUNCTIONAL BLOCK DIAGRAM AVDD AVSS GPIO GPIO PC BEEP RESET 5V JACK SENSE SELECTOR SENSE Σ SELECTOR GAM MONO_OUT SELECTOR PCM/AC3 S/PDIF TX S/PDIF_OUT GAM HP PORT-A HEADPHONE EQ PCM Σ-Δ DAC GA GA SELECTOR MIC BIAS Z MIC_BIAS-D HD AUDIO INTERFACE PC BEEP PC BEEP M GAM BOOST HP Z SELECTOR M PORT-D LINE_OUT DIGITAL PC BEEP G M Σ M M M SELECTOR M M MIC BIAS Z MIC_BIAS-C GA GA GA GA GA GAM BOOST Z PORT-C LINE_IN MIC BIAS Z MIC_BIAS-F SELECTOR PCM/FLOAT32 Σ-Δ ADC M G SELECTOR GAM BOOST Z PORT-F REAR MIC M DIFF AMP MIC BIAS Z MIC_BIAS-B PORT-B FRONT MIC 04321-005 M BOOST PORT-E AUX CD_R CD_GND CD_L Figure 1.
Rev.
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