AD1981HD Datasheet, PDF (1/16 Pages) Analog Devices – HD Audio SoundMAX Codec

HD Audio SoundMAX^® Codec
AD1981HD
FEATURES
ENHANCED FEATURES
2 DAC channels: 16-, 20-, or 24-bit
No AFILT pins, results in BOM savings
2 ADC channels: 16- or 20-bit
HD audio sample rates
5.0 V AVDD supply, 3.3 V DVDD supply
Jack-sensing autoconfiguration options
8 kHz, 11.025 kHz, 16 kHz, 22.05 kHz, 32 kHz,
44.1 kHz, 48 kHz
Mute line output and monaural output (MONO_OUT)
when headphones are used
Greater than 90 dB dynamic range
Mute MONO_OUT when a device is in the line out jack
S/PDIF output: 32 kHz, 44.1 kHz or 48 kHz, 16- or 24-bit
Selectable trip level: high/low supports all jack types
Digital beep and analog PC beep pass-through
Peripheral identification/enumeration
Integrated headphone amplifiers on two ports
Jack event/presence detection using SENSE or GPIO pins
Port retasking
Microphone to MONO_OUT for speakerphone applications
Selectable microphone and line inputs
Advanced power management modes
Full analog mixer
4 software-controlled microphone bias pins
Legacy inputs: CD and auxiliary inputs
Up to 30 dB microphone boost
External amplifier power-down (EAPD)
4 GPIOs—external control or traditional jack sense
48-pin, Pb-free LQFP
FUNCTIONAL BLOCK DIAGRAM
GPIO
GPIO
AV_DD
5V
AV_SS
PC BEEP
RESET
JACK
SENSE
SENSE
Σ
GAM
MONO_OUT
PCM/AC3
S/PDIF TX
EQ
PCM
Σ-Δ DAC
PC BEEP
DIGITAL
PC BEEP
S/PDIF_OUT
PC BEEP
G
M
GA
GA
M
M
Σ
M
M
M
M
M
GA
GA
GA
GA
GA
GAM
HP
MIC
BIAS
Z
GAM
HP
Z
BOOST
MIC
BIAS
Z
GAM
Z
BOOST
PORT-A
HEADPHONE
MIC_BIAS-D
PORT-D
LINE_OUT
MIC_BIAS-C
PORT-C
LINE_IN
PCM/FLOAT32
Σ-Δ ADC
M
G
DIFF
AMP
MIC
BIAS
Z
GAM
Z
BOOST
M
MIC
BIAS
Z
M
BOOST
MIC_BIAS-F
PORT-F
REAR MIC
MIC_BIAS-B
PORT-B
FRONT MIC
Figure 1.
Rev. 0
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