Stereo, 24-Bit, 192 kHz,
Multibit, Sigma-Delta DAC
AD1852
FEATURES
APPLICATIONS
5 V stereo audio DAC system
High end
DVDs, CDs, home theater systems, automotive, audio
Accepts 16-bit/18-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 Σ-Δ 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
117 dB signal-to-noise (not muted) at 48 kHz sample rate
(A-weighted mono)
114 dB signal-to-noise (not muted) at 48 kHz sample rate
(A-weighted stereo)
117 dB dynamic range (not muted) at 48 kHz sample rate
(A-weighted mono)
114 dB dynamic range (not muted) at 48 kHz sample rate
(A-weighted stereo)
−105 dB THD+N (mono application circuit)
−102 dB THD+N (stereo)
systems, sampling musical keyboards, digital mixing
consoles, and digital audio effects processors
GENERAL DESCRIPTION
The AD1852 is a complete, high performance, single-chip, stereo
digital, audio playback system. It is comprised of a multibit, Σ-Δ
modulator, digital interpolation filters, and analog output drive
circuitry. Other features include an on-chip, stereo attenuator
and mute, programmed through an SPI-compatible serial control
port. The AD1852 is fully compatible with all known DVD
formats, including 192 kHz, as well as 96 kHz sample frequencies
and 24 bits. It is also backwards compatible by supporting
50 μs/15 μs digital de-emphasis intended for Red Book compact
discs, as well as de-emphasis at 32 kHz and 48 kHz sample rate.
The AD1852 has a very simple, but 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
AD1852 can be configured in left-justified, I2S, right-justified,
or DSP serial port compatible modes. It can support 16, 18, 20,
and 24 bits in all modes. The AD1852 accepts serial audio data
in MSB first, twos-complement format. The AD1852 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
for operation over the 0°C to 70°C temperature range.
115 dB stop-band attenuation
On-chip clickless volume control
Hardware and software controllable clickless mute
Serial (SPI) control for: serial mode, number of bits, sample
rate, volume, mute, de-emp
Digital de-emphasis processing for 32 kHz, 44.1 kHz, 48 kHz
sample rates
Clock autodivide circuit supports five master-clock frequencies
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
VOLUME
MUTE
2
3
VOLTAGE
REFERENCE
AUTO-CLOCK
DIVIDE CIRCUIT
SERIAL CONTROL
INTERFACE
AD1852
16-/18-/20-/24-BIT
DIGITAL
8 × fS
ATTEN/
MUTE
MULTIBIT SIGMA-
DAC
DELTA MODULATOR
INTERPOLATOR
SERIAL
DATA
INTERFACE
DATA INPUT
ANALOG
OUTPUTS
2
8 × fS
INTERPOLATOR
SERIAL
MODE
ATTEN/
MUTE
MULTIBIT SIGMA-
DELTA MODULATOR
DAC
2
ANALOG
2
MUTE
DE-EMPHASIS
ZERO
FLAG
RESET
SUPPLY
Figure 1.
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 that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registeredtrademarks arethe property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 www.analog.com
Fax: 781.461.3113 ©2000–2009 Analog Devices, Inc. All rights reserved.
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