MAX5556_11 Datasheet, PDF (1/17 Pages) Maxim Integrated Products – Low-Cost Stereo Audio DAC

19-0550; Rev 1; 2/11
Low-Cost Stereo Audio DAC
General Description
The MAX5556 stereo audio sigma-delta digital-to-analog
converter (DAC) offers a simple and complete stereo
digital-to-analog solution for media servers, set-top
boxes, video-game hardware, automotive rear-seat
entertainment, and other general consumer audio appli-
cations. This DAC features built-in digital interpolation/fil-
tering, sigma-delta digital-to-analog conversion, 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 con-
ditions occur.
The MAX5556 receives input data over a 3-wire
I²S-compatible interface with left-justified audio data.
Data can be clocked by either an external or internal
serial clock. The internal serial clock frequency is pro-
grammable by selection of a master clock (MCLK) and
sample clock (LRCLK) ratio. Sampling rates from 2kHz
to 50kHz are supported.
The MAX5556 operates from a single +4.75V to +5.5V
analog supply with total harmonic distortion plus noise
below -87dB. This device is available in an 8-pin SO
package and is 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
Features
o Simple and Complete Stereo Audio DAC
Solutions, No Controls to Set
o Sigma-Delta Stereo DACs with Built-In
Interpolation and Analog Output Filters
o I²S-Compatible Digital Audio Interface
o Clickless/Popless Operation
o 3.5V_P-P Output Voltage Swing
o -87dB THD+N
o +87dB Dynamic Range
o Sample Frequencies (f_S) from 2kHz to 50kHz
o Master Clock (MCLK) up to 25MHz
o Automatic Detection of Clock Ratio (MCLK/
LRCLK)
Ordering Information
PART
TEMP
RANGE
PIN-
PACKAGE
DATA FORMAT
MAX5556ESA+
-40°C to
+85°C
8 SO
Left-justified I²S
data
MAX5556ESA/V+
-40°C to
+85°C
8 SO
Left-justified I²S
data
+Denotes a lead(Pb)-free/RoHS-compliant package. For lead-
ed version, contact factory.
/V denotes an automotive-qualified part.
Typical Operating Circuit
+5V
Pin Configuration
VDD
AUDIO
DECOMPRESSION
SDATA
SCLK
LRCLK
SERIAL
INTERFACE
OUTL
DAC
MAX5556
CLOCK
MCLK
DAC
GND
OUTR
FILTER
FILTER
LEFT
OUTPUT
LINE-LEVEL
BUFFER
RIGHT
OUTPUT
LINE-LEVEL
BUFFER
TOP VIEW
+
SDATA 1
SCLK 2
LRCLK 3
MAX5556
MCLK 4
8 OUTL
7 V_DD
6 GND
5 OUTR
SO
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.