a
FEATURES
5 V Stereo Audio DAC System
Accepts 16-Bit/20-Bit/24-Bit Data
Supports 24 Bits, 192 kHz Sample Rate
Accepts a Wide Range of Sample Rates Including:
32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, and 192 kHz
Multibit Sigma-Delta Modulator with Data Directed
Scrambling
Single-Ended Output for Easy Application
鈥?4 dB THD + N
108 dB SNR and Dynamic Range
75 dB Stopband Attenuation
Clickless Volume Control
Hardware and Software Controllable Clickless Mute
Serial (SPI) Control for: Serial Mode, Number of Bits,
Sample Rate, Volume, Mute, De-Emphasis and
Output Phase
Digital De-Emphasis Processing for 32 kHz, 44.1 kHz,
and 48 kHz Sample Rates
Programmable Dual Fractional-N PLL Clock Generator
27 MHz Master Clock Input/Oscillator
Generated System Clocks
SCLK0: 33.8688 MHz
SCLK1: 384/256 f
S
(32 kHz/44.1 kHz/48 kHz/88.2 kHz/
96 kHz)
SCLK2: 512 f
S
(32 kHz/44.1 kHz/48 kHz/88.2 kHz/
96 kHz)/22.5792 MHz
Better than 100 ps RMS Clock Jitter
Flexible Serial Data Port with Right-Justified, Left-
Justified, I
2
S-Compatible, and DSP Serial Port Modes
28-Lead SSOP Plastic Package
PLL/Multibit - DAC
AD1959
APPLICATIONS
DVD, CD, Home Theater Systems, Automotive Audio
Systems, Sampling Musical Keyboards, Digital Mixing
Consoles, Digital Audio Effects Processors
PRODUCT OVERVIEW
The AD1959 is a complete high-performance single-chip stereo
digital audio playback system. It is comprised of a multibit sigma-
delta modulator, digital interpolation filters, and analog output
drive circuitry with an on-board dual PLL clock generator.
Other features include an on-chip stereo attenuator and mute,
programmed through an SPI-compatible serial control port.
The AD1959 is fully compatible with all known DVD formats
including 96 kHz and 192 kHz sample frequencies and 24 bits.
It also is backwards-compatible by supporting 50
碌s/15 碌s
digital de-emphasis for 鈥渞edbook鈥?compact discs, as well as
de-emphasis at 32 kHz and 48 kHz sample rates.
The AD1959 has a simple but flexible serial data input port that
allows for glueless interconnection to a variety of ADCs, DSP
chips, AES/EBU receivers, and sample rate converters. The
AD1959 can be configured in left-justified, I
2
S, right-justified,
or DSP serial-port-compatible modes. It can support 16, 20,
and 24 bits in all modes. The AD1959 accepts serial audio data
in MSB first, two鈥檚-complement format, and operates from a
single 5 V power supply. It is fabricated on a single monolithic
integrated circuit and housed in a 28-lead SSOP package for
operation over the temperature range 鈥?0擄C to +105擄C.
FUNCTIONAL BLOCK DIAGRAM
XIN
XOUT MCLK
LOOP
FILTERS
2
CLOCK
OUTPUTS
3
CONTROL DATA
INPUT
3
AD1959
OSC
PLL
CIRCUIT
SERIAL CONTROL
INTERFACE
VOLTAGE
REFERENCE
ATTEN/MUTE
16-/20-/24-
BIT DIGITAL
DATA INPUT
SERIAL
DATA
INTERFACE
ATTEN/MUTE
8 F
S
INTERPOLATOR
MULTIBIT
SIGMA-DELTA
MODULATOR
DAC
OUTPUT
BUFFER
L
ANALOG
OUTPUTS
3
8 F
S
INTERPOLATOR
MULTIBIT
SIGMA-DELTA
MODULATOR
DAC
OUTPUT
BUFFER
R
2
RESET
MUTE
ZERO FLAG
PLL SUPPLY
2
DIGITAL SUPPLY
3
ANALOG SUPPLY
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. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
www.analog.com
Fax: 781/326-8703
漏 Analog Devices, Inc., 2001
1
2
3
4
5
6
7
8
