MAX5556 Datasheet, PDF (1/19 Pages) Maxim Integrated Products – Low-Cost Stereo Audio DACs

19-0550; Rev 0; 5/06
Low-Cost Stereo Audio DACs
General Description
The MAX5556–MAX5559 stereo audio sigma-delta
digital-to-analog converters (DACs) offer a simple and
complete stereo digital-to-analog solution for media
servers, set-top boxes, video-game hardware, automo-
tive rear-seat entertainment and other general consumer
audio applications. These DACs feature built-in digital
interpolation/filtering, sigma-delta digital-to-analog con-
version and analog output filtering. Control logic and
mute circuitry minimize audible pops and clicks during
power-up, power-down, clock changes, or when invalid
clock conditions occur.
The MAX5556–MAX5559 receive input data over a flexi-
ble 3-wire interface, supporting I²S-compatible, left-jus-
tified, right-justified 16-bit, and right-justified 18-bit
audio data. Data can be clocked by either an external
or internal serial clock. The internal serial clock frequen-
cy is programmable by selection of a master clock
(MCLK) and sample clock (LRCLK) ratio. Sampling
rates from 2kHz to 50kHz are supported.
The MAX5556–MAX5559 operate from a single +4.75V
to +5.5V analog supply with total harmonic distortion
plus noise below -87dB. These devices are available in
8-pin SO packages and are specified over the -40°C to
+85°C industrial temperature range.
Applications
Digital Video Recorders and Media Servers
Set-Top Boxes
Video-Game Hardware
Automotive Rear-Seat Entertainment
Typical Operating Circuit
+5V
VDD
AUDIO
DECOMPRESSION
SDATA
SCLK
LRCLK
SERIAL
INTERFACE
OUTL
DAC
MAX5556–MAX5559
CLOCK
MCLK
OUTR
DAC
GND
LEFT
OUTPUT
LINE-LEVEL
BUFFER
RIGHT
OUTPUT
LINE-LEVEL
BUFFER
Features
♦ Simple and Complete Stereo Audio DAC
Solutions, No Controls to Set
♦ Sigma-Delta Stereo DACs with Built-In
Interpolation and Analog Output Filters
♦ I²S-Compatible Digital Audio Interface (MAX5556)
♦ Clickless/Popless Operation
♦ Output Voltage Swing: 3.5V_P-P
♦ -87dB THD+N
♦ +87dB Dynamic Range
♦ Sample Frequencies (f_S) from 2kHz to 50kHz
♦ Master Clock (MCLK) up to 25MHz
♦ Automatic Detection of Clock Ratio (MCLK/
LRCLK)
Ordering Information
PART
MAX5556ESA
MAX5557ESA*
MAX5558ESA*
MAX5559ESA*
PIN -
PA C K A G E
8 SO
8 SO
8 SO
8 SO
PKG
CODE
S8-5
S8-5
S8-5
S8-5
DATA FORMAT
Left-justified I²S data
Left-justified data
Right-justified 16-Bit data
Right-justified 18-Bit data
Note: All devices are specified over the -40°C to +85°C oper-
ating temperature range. Contact factory for +105°C operation.
*Future product—contact factory for availability.
Pin Configuration
TOP VIEW
SDATA 1
SCLK 2
LRCLK 3
MCLK 4
MAX5556–
MAX5559
8 OUTL
7 V_DD
6 GND
5 OUTR
SO
________________________________________________________________ Maxim Integrated Products 1
For pricing delivery, and ordering information please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.