a
Stereo, 24-Bit, 192 kHz, Multibit ꢀꢁ DAC
AD1853*
FEATURES
APPLICATIONS
5 V Stereo Audio DAC System
Accepts 16-/18-/20-/24-Bit Data
Supports 24 Bits and 192 kHz Sample Rate
Hi End: DVD, CD, Home Theater Systems, Automotive
Audio Systems, Sampling Musical Keyboards, Digital
Mixing Consoles, Digital Audio Effects Processors
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 “Perfect Differential
Linearity Restoration” for Reduced Idle Tones and
Noise Floor
Data Directed Scrambling DAC—Least Sensitive to Jitter
Differential Output for Optimum Performance
120 dB Signal to Noise (Not Muted) at 48 kHz
(A-Weighted Mono)
117 dB Signal to Noise (Not Muted) at 48 kHz
(A-Weighted Stereo)
119 dB Dynamic Range (Not Muted) at 48 kHz Sample
Rate (A-Weighted Mono)
PRODUCT OVERVIEW
The AD1853 is a complete high performance single-chip stereo
digital audio playback system. It is comprised of a high per-
formance digital interpolation filter, a multibit sigma-delta
modulator, and a continuous-time current-out analog DAC
section. Other features include an on-chip clickless stereo at-
tenuator and mute capability, programmed through an SPI-
compatible serial control port. The AD1853 is fully compatible
with all known DVD formats and supports 48 kHz, 96 kHz and
192 kHz sample rates with up to 24 bits word lengths. It also
provides the “Redbook” standard 50 µs/15 µs digital de-emphasis
filters at sample rates of 32 kHz, 44.1 kHz and 48 kHz.
116 dB Dynamic Range (Not Muted) at 48 kHz Sample
Rate (A-Weighted Stereo)
–107 dB THD+N (Mono Application Circuit, See Figure 30)
–104 dB THD+N (Stereo)
115 dB Stopband Attenuation (96 kHz)
On-Chip Clickless Volume Control
Hardware and Software Controllable Clickless Mute
Serial (SPI) Control for: Serial Mode, Number of Bits,
Interpolation Factor, Volume, Mute, De-Emphasis, Reset
Digital De-Emphasis Processing for 32, 44.1 and 48 kHz
Sample Rates
Clock Auto-Divide Circuit Supports Five Master-Clock
Frequencies
The AD1853 has a very 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
AD1853 can be configured in left-justified, I2S, right-justified,
or DSP serial port compatible modes. The AD1853 accepts
serial audio data in MSB first, twos complement format.
The AD1853 operates from a single +5 V power supply. It is
fabricated on a single monolithic integrated circuit and is housed in
a 28-lead SSOP package for operation over the temperature
range 0°C to +70°C.
Flexible Serial Data Port with Right-Justified, Left-
Justified, I2S-Compatible and DSP Serial Port Modes
28-Lead SSOP Plastic Package
FUNCTIONAL BLOCK DIAGRAM
DIGITAL
SUPPLY
CLOCK
IN
CONTROL DATA
INPUT
INT2ꢂ INT4ꢂ
VOLUME
MUTE
2
3
VOLTAGE
REFERENCE
AUTO-CLOCK
DIVIDE CIRCUIT
SERIAL CONTROL
INTERFACE
AD1853
8 ꢂ F
INTERPOLATOR
MULTIBIT SIGMA-
DIGITAL
ATTEN/
MUTE
S
IDAC
DELTA MODULATOR
DATA INPUT
SERIAL
ANALOG
OUTPUTS
DATA
INTERFACE
2
SERIAL
MODE
MULTIBIT SIGMA-
DELTA MODULATOR
8 ꢂ F
ATTEN/
MUTE
S
IDAC
INTERPOLATOR
2
ANALOG
2
MUTE
DE-EMPHASIS
ZERO
FLAG
RESET
SUPPLY
*Patents Pending.
REV. A
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
which 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
Fax: 781/326-8703
World Wide Web Site: http://www.analog.com
© Analog Devices, Inc., 1999
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