HD Audio SoundMAX® Codec
AD1983
FEATURES
ENHANCED 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 generator
Integrated headphone amplifiers
Selectable microphone inputs with preamplifiers
Stereo line level inputs
No AFILT pins, results in BOM savings
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 sense trip level: high/low supports all jack types
Peripheral identification/enumeration
Jack presence detection: HD Audio SENSE and GPIOs
Microphone to MONO_OUT for speakerphone
Advanced power management modes
2 software-controlled microphone bias pins
Stereo microphone array capture
Full analog mixer
Source from two different ports
0 dB, 10 dB, 20 dB, and 30 dB boost options
2 GPIOs for external circuit control, jack sense
32-lead, Pb-free LFCSP_VQ (QFN) package
FUNCTIONAL BLOCK DIAGRAM
NID: 01
GPIO
GPIO_0/JS_1
GPIO_1/JS_0
JACK
SENSE
SENSE_A
SENSE_SRC
AV
AV
+5.0V
DD
NID: 02
NID: 10
SS
16-, 20-, 24-BIT
32kHz, 44.1kHz,48kHz
PCM/AC3
NID: 0A
S/PDIF_OUT
DIGITAL
PCBEEP
G
M
S/PDIFTX
0dB TO –45.0dB
3dB STEPS
NID: 03
24-BIT
48kHz
PCM
NID: 06
SDATA_IN
Σ-Δ DAC
M
HP
Σ
Σ
GA
PORT-A
HEADPHONE
SDATA_OUT
SYNC
–46.5dBTO +3dB
OUTPUT_EN
RESET
NID: 05
NID: 11
GA
GA
M
Z
BIT_CLK
PORT-D
FRONT
OUTPUT_EN
–46.5dBTO +3dB
–34.5dB TO +12dB
NID: 0B
M
NID: 07
GA
–46.5dBTO +3dB
BIAS_SEL
M
Σ
MONO_OUT
NID: 0E
NID: 0F
Σ
NID: 09
–34.5dBTO +12dB
–34.5dB TO +12dB
MIC
BIAS
M
M
Z
MIC_BIAS-C
NID: 0D
BIAS_EN
PORT-C
LINE IN
GA
NID: 13
GA
NID: 12
NID: 04
+3.3V
DV
DD
BIAS_SEL
NID: 0C
20-BIT
48kHz
NID: 08
G
M
PCM/FLOAT32
MIC
BIAS
DV
SS
Z
Σ-ΔADC
MIC_BIAS-B
BOOST
0dB TO +22.5dB
BIAS_EN
PORT-B
MIC
0dB, 10dB, 20dB, 30dB
Figure 1.
Rev. 0
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