CS43L43
Low Voltage, Stereo DAC with Headphone Amp
Features
16-Pin TSSOP Package
1.8 to 3.3 Volt Supply
24-Bit Conversion / 96 kHz Sample Rate
94 dB Dynamic Range at 3 V Supply
-85 dB THD+N at 1.8 V Supply
Low Power Consumption
Digital Volume Control
•
96 dB Attenuation, 1 dB Step Size
Description
The CS43L43 is a complete stereo digital-to-analog out-
put system including interpolation, 1-bit D/A conversion,
analog filtering, volume control, and a headphone ampli-
fier, in a 16-pin TSSOP package.
The CS43L43 is based on delta-sigma modulation,
where the modulator output controls the reference volt-
age input to an ultra-linear analog low-pass filter. This
architecture allows infinite adjustment of the sample rate
between 2 kHz and 100 kHz simply by changing the
master clock frequency.
The CS43L43 contains on-chip digital bass and treble
boost, peak signal limiting and de-emphasis. The
CS43L43 operates from a +1.8 V to +3.3 V supply and
consumes only 16 mW of power with a 1.8 V supply.
These features are ideal for portable CD, MP3 and MD
players and other portable playback systems that require
extremely low power consumption.
Digital Bass and Treble Boost
•
Selectable Corner Frequencies
•
Up to 12 dB Boost in 1 dB Increments
Peak Signal Limiting to Prevent Clipping
De-emphasis for 32 kHz, 44.1 kHz, and
48 kHz
Headphone Amplifier
•
up to 22 mW
rms
Power Output into 16
Ω
Load*
•
25 dB Analog Attenuation and Mute
•
Zero Crossing Click-free Level Transitions
ORDERING INFORMATION
CS43L43-KZ
CS43L43-KZZ, Lead Free
CDB43L43
ATAPI Mixing Functions
* 1 kHz sine wave at 3.3V supply
-10 to 70 °C
-10 to 70 °C
16-pin TSSOP
16-pin TSSOP
Evaluation Board
DIF1/SDA
RST
DIF0/SCL
CONTROL PORT INTERFACE
LRCK
DE-
EMPHASIS
DIGITAL
VOLUME
CONTROL
SERIAL
AUDIO
INTERFACE
BASS/TREBLE
BOOST
LIMITING
DIGITAL
FILTER
∆Σ
DAC
ANALOG
FILTER
ANALOG
VOLUME
CONTROL
HEAD-
PHONE
AMPLIFIER
HP_A
SCLK/DEM
∆Σ
DAC
ANALOG
FILTER
ANALOG
VOLUME
CONTROL
HP_B
SDATA
MCLK
Preliminary Product Information
http://www.cirrus.com
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
Copyright
©
Cirrus Logic, Inc. 2004
(All Rights Reserved)
JUL ‘04
DS479PP3
CIRRUS [ CIRRUS LOGIC ]
