REV. A
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a
AD1853
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 World Wide Web Site: http://www.analog.com
Fax: 781/326-8703 © Analog Devices, Inc., 1999
Stereo, 24-Bit, 192 kHz, Multibit DAC
FEATURES
5 V Stereo Audio DAC System
Accepts 16-/18-/20-/24-Bit Data
Supports 24 Bits and 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 “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)
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
Flexible Serial Data Port with Right-Justified, Left-
Justified, I
2
S-Compatible and DSP Serial Port Modes
28-Lead SSOP Plastic Package
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.
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, I
2
S, 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.
FUNCTIONAL BLOCK DIAGRAM
SERIAL
DATA
INTERFACE
8 F
S
INTERPOLATOR
SERIAL CONTROL
INTERFACE
AUTO-CLOCK
DIVIDE CIRCUIT
VOLUME
MUTE
CONTROL DATA
INPUT
3
2
DIGITAL
SUPPLY
CLOCK
IN
ANALOG
OUTPUTS
22
ZERO
FLAG
ANALOG
SUPPLY
DE-EMPHASISMUTE
RESET
2
SERIAL
MODE
DIGITAL
DATA INPUT
AD1853
MULTIBIT SIGMA-
DELTA MODULATOR
ATTEN/
MUTE
IDAC
MULTIBIT SIGMA-
DELTA MODULATOR
8 F
S
INTERPOLATOR
ATTEN/
MUTE
VOLTAGE
REFERENCE
IDAC
INT2 INT4
APPLICATIONS
Hi End: DVD, CD, Home Theater Systems, Automotive
Audio Systems, Sampling Musical Keyboards, Digital
Mixing Consoles, Digital Audio Effects Processors
