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Analog Devices
Analog Devices

AD1884 Datasheet

High Definition Audio SoundMAX Codec


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a
FEATURES
FOUR 192 kHz DACs/ADCs
Two independent stereo DAC/ADC pairs
Simultaneous record of two stereo channels
Simultaneous playback of two stereo channels
Independent 8, 11.025, 16, 22.05, 32, 44.1,
48, 88.2, 96, 176.4, and 192 kHz sample rates
16, 20, and 24-bit resolution
Selectable stereo mixer on outputs
S/PDIF OUTPUT
Supports 44.1, 48, 88.2, 96, 176.4, and 192 kHz sample rates
16, 20, and 24-bit data; PCM, and AC3 formats
Digital PCM gain control
DEDICATED AUXILIARY PINS
Stereo CD/auxiliary I/O port w/GND sense
Stereo auxiliary/dock I/O port
Mono out pin for internal speakers or telephony
High Definition Audio
SoundMAX® Codec
AD1884
ENHANCED FEATURES
Two stereo headphone amplifiers
Microsoft Vista premium logo for notebook
90 dB audio outputs, 85 dB audio inputs
Internal 32-bit arithmetic for greater accuracy
Impedance and presence detection on all jacks
Three independent microphone bias pins
Digital and analog PCBeep
Three general-purpose digital I/O (GPIO) pins
3.3 V analog and digital supply voltages
Advanced power management modes
48-lead, Pb-free LFCSP_VQ package
H DAC1
D
DAC0
A
U
D
I S/PDIF OUT
O
I
N
T DIGITAL
E PCBEEP
R
F
A
C ADC0
E
ADC1
HP
HP
Figure 1. Functional Block Diagram
AD1884
PORT A
PORT D
MONO OUT
PORT E
PORT F
PCBEEP
PORT C
PORT B
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
©2007 Analog Devices, Inc. All rights reserved.
Page 1

AD1884
CONTENTS
General Description ................................................. 3
Additional Information ......................................... 3
Jack Configurations .............................................. 3
AD1884 Specifications .............................................. 4
Test Conditions ................................................... 4
Performance ........................................................ 4
General Specifications ............................................ 4
HD–Audio Link Specification .................................. 6
Power Down States ............................................... 7
Absolute Maximum Ratings ....................................... 8
ESD Sensitivity ..................................................... 8
Environmental Conditions ...................................... 8
Pin Configuration and Function Descriptions ................. 9
HD Audio Widgets ................................................ 12
AD1884 HD Audio Parameters ................................. 13
Outline Dimensions ............................................... 15
Ordering Guide ..................................................... 15
REVISION HISTORY
1/07–Rev 0: Initial version
Rev. 0 | Page 2 of 16 | January 2007
Page 2

GENERAL DESCRIPTION
The AD1884 family of audio codecs and SoundMAX® software
provides superior high definition audio quality that exceeds
Vista Premium for notebook performance. The AD1884 has
four 192 kHz DACs, four 192 kHz ADCs, S/PDIF output, Digi­
tal Beep and analog PCBeep. These features make the AD1884
the right choice for notebook PCs that meet the Microsoft Vista
premium performance specifications as well as desktop PCs that
meet the Microsoft Vista Basic performance specifications.
The AD1884 is available in a 48-lead, Pb-free frame chip scale
package in both reels and trays. See Ordering Guide on Page 15.
ADDITIONAL INFORMATION
This data sheet provides a general overview of the AD1884
SoundMAX codec’s architecture and functionality. Additional
information on the AD1884 is available in the AD1884 Pro­
grammers Reference Manual. Please contact your local ADI
sales representative for more information. For information on
SoundMAX codecs and software see Analog Devices website at
http://www.analog.com/soundMAX.
JACK CONFIGURATIONS
The guideline shown in Table 1 should be used when selecting
ports for particular functions. The symbols used in this table are
defined as: LI = Line Level Input, LO = Line Level Output,
HP = Output capable of driving headphone load, MIC = Input
supports microphones with MIC bias and boost amplifier.
Table 1. Port Assignments
Port
Port A
Port B
Port C
Port D
Port E
Port F
MONO_OUT
HP MIC LO
xx
x
x
xx
xx
x
x
LI
x
x
x
x
AD1884
Rev. 0 | Page 3 of 16 | January 2007
Page 3

AD1884
AD1884 SPECIFICATIONS
TEST CONDITIONS
Parameter
Test Condition
Temperature
Digital Supply
Analog Supply
MIC_BIAS_IN (via Low-Pass Filter)
Sample Rate fS
Input Signal (Frequency Sine Wave)
Amplitude for THD + N
Analog Output Pass Band
DAC
ADC
25°C
3.3 V
3.3 V
5.0 V
48 kHz
1008 Hz
–3.0 dB Full Scale
20 Hz to 20 kHz
10 kΩ Output Load: Line Out Tests
32 Ω Output Load: Headphone Tests
0 dB Gain
PERFORMANCE
Parameter
Line Out Drive (10 kΩ loads—DAC to Pin)
Total Harmonic Distortion (THD + N)
Dynamic Range (–60 dB in ref to fS A-Weighted)
Signal-to-Noise Ratio
Headphone Drive (32 Ω loads—DAC to Pin)
Total Harmonic Distortion (THD + N)
Dynamic Range (–60 dB in ref to fS A-Weighted)
Signal-to-Noise Ratio
Microphone/Line In (Pin to ADC, Mic Boost = 0 dB)
Total Harmonic Distortion (THD + N)
Dynamic Range (–60 dB in ref to fS A-Weighted)
Signal-to-Noise Ratio
GENERAL SPECIFICATIONS
Parameter
DIGITAL DECIMATION AND INTERPOLATION FILTERS1
Pass Band – fS (kHz) = 8 ~ 192
Pass-Band Ripple– fS (kHz) = 8 ~ 192
Stop Band – fS (kHz) = 8 ~ 192
Stop-Band Rejection – fS (kHz) = 8 ~ 192
Group Delay – fS (kHz) = 8 ~ 192
Group Delay Variation Over Pass Band
ANALOG TO DIGITAL CONVERTERS
Resolution
Gain Error2 (Full-Scale Span Relative to Nominal Input Voltage)
Interchannel Gain Mismatch (Difference of Gain Errors)
ADC Offset Error1
ADC Crosstalk1
Line Inputs (Input L, Ground R, Read R; Input R, Ground L, Read L)
Line_In to Other
Min Typ Max Unit
–84 dB
90 dB
90 dB
–74 dB
90 dB
90 dB
–78 dB
85 dB
85 dB
Min
0
0.6 fS
Typ
20
0
24
±0.2
–85
–100
Max
0.4 fS
±0.005
–100
±10
±0.5
±5
–80
Unit
Hz
dB
Hz
dB
1/fS
μs
Bits
%
dB
mV
dB
dB
Rev. 0 | Page 4 of 16 | January 2007
Page 4
Part Number AD1884
Manufactur Analog Devices
Description High Definition Audio SoundMAX Codec
Total Page 16 Pages
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