High Definition Audio
SoundMAX Codec
AD1984B
FEATURES
STEREO DIGITAL MICROPHONE INTERFACE
Microsoft Vista Premium Logo for desktop
96+ dB audio outputs, 90 dB audio inputs
WLP 3.0 and 4.0
Security feature prevents unauthorized recording
2 stereo headphone amplifiers
Internal 32-bit arithmetic for greater accuracy
Impedance and presence detection on all jacks
Full analog mixer with DAC inputs
3 independent microphone bias pins
Digital and analog PCBeep
3 general-purpose digital I/O (GPIO) pins
3.3 V analog supply voltage
1.7 V to 1.9 V or 3.3 V digital supply voltages
3.3 V HD-Audio link signaling voltage
Advanced power management modes
48-lead LFCSP_VQ package
Two 192 kHz digital microphone channels
Supports 1 or 2 microphones per pin
Selectable bit clock rates of 1.5 MHz, 2.0 MHz, and 3.0 MHz
Mono and stereo array support 8 kHz, 11.025 kHz, 16 kHz,
22.05 kHz, 32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz,
176.4 kHz, and 192 kHz sample rates
16-, 20-, and 24-bit resolution
S/PDIF OUTPUT
Second S/PDIF can support external HDMI interface
Supports 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, and
192 kHz sample rates
16-, 20-, and 24-bit data; PCM and AC3 formats
Digital PCM gain control
AUXILIARY PINS
Stereo CD/auxiliary I/O port with ground sense
Stereo auxiliary/dock I/O port
Mono out pin for internal speakers or telephony
192 kHz DACs/ADCs
2 independent stereo DAC/ADC pairs
Simultaneous record of 2 stereo channels
Simultaneous playback of 2 stereo channels
Independent 8 kHz, 11.025 kHz, 16 kHz, 22.05 kHz, 32 kHz,
44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, and 192 kHz
sample rates
16-, 20-, and 24-bit resolution
Selectable stereo mixer on outputs
⌺
HP
H
D
DAC1
DAC0
PORT A
HP
PORT D
⌺
⌺
⌺
⌺
A
U
D
I
MONO OUT
S/PDIF-1
O
PORT E
PORT F
PCBEEP
PORT B
PORT C
S/PDIF-2
I
N
T
E
R
F
A
C
E
DIGITAL
PCBEEP
⌺
ADC0
ADC1
DM_1/2
DIGITAL
MICROPHONE
DM_2
DM_CLK
AD1984B
Figure 1. Functional Block Diagram
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
One Technology Way, P.O.Box 9106, Norwood, MA 02062-9106 U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
www.analog.com
©2008 Analog Devices, Inc. All rights reserved.