AD1933YSTZ Datasheet, PDF (1/28 Pages) Analog Devices – 8-Channel DAC with PLL and Differential Outputs, 192 kHz, 24 Bits

Data Sheet
8-Channel DAC with PLL and
Differential Outputs, 192 kHz, 24 Bits
AD1933
FEATURES
PLL generated or direct master clock
Low EMI design
DAC with 110 dB dynamic range and SNR
−96 dB THD + N
3.3 V single supply
Tolerance for 5 V logic inputs
Supports 24 bits and 8 kHz to 192 kHz sample rates
Differential DAC output
Log volume control with autoramp function
SPI® controllable for flexibility
Software-controllable clickless mute
Software power-down
Right-justified, left-justified, I²S, and TDM modes
Master and slave modes up to 16-channel input/output
64-lead LQFP
Qualified for automotive applications
APPLICATIONS
Automotive audio systems
Home Theater Systems
Set-top boxes
Digital audio effects processors
GENERAL DESCRIPTION
The AD1933 is a high performance, single chip that provides
eight digital-to-analog converters (DACs) with differential
output using the Analog Devices, Inc., patented multibit sigma-
delta (Σ-Δ) architecture. An SPI port is included, allowing a
microcontroller to adjust volume and many other parameters.
The AD1933 operates from 3.3 V digital and analog supplies.
The AD1933 is available in a 64-lead (differential output) LQFP.
Other members of this family include a single-ended DAC
output version.
The AD1933 is designed for low EMI. This consideration is
apparent in both the system and circuit design architectures.
By using the on-board PLL to derive the master clock from the
LR clock or from an external crystal, the AD1933 eliminates the
need for a separate high frequency master clock and can also be
used with a suppressed bit clock. The DACs are designed using
the latest Analog Devices continuous time architectures to
further minimize EMI. By using 3.3 V supplies, power
consumption is minimized, further reducing emissions.
FUNCTIONAL BLOCK DIAGRAM
AD1933
DAC
DAC
DIGITAL AUDIO
INPUT/OUTPUT
SERIAL
DATA
PORT
CLOCKS
SDATAIN
TIMING MANAGEMENT
AND CONTROL
(CLOCK AND PULL)
DIGITAL
FILTER
AND
VOLUME
CONTROL
DAC
DAC
DAC
DAC
DAC
PRECISION
VOLTAGE
REFERENCE
CONTROL PORT
SPI
6.144MHz
DAC
CONTROL DATA
INPUT/OUTPUT
Figure 1.
ANALOG
AUDIO
OUTPUTS
Rev. E
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