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參數(shù)資料
| 型號： | AD1855JRSRL |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | DAC |
| 英文描述： | Stereo, 96 kHz, Multibit DAC |
| 中文描述： | SERIAL INPUT LOADING, 24-BIT DAC, PDSO28 |
| 封裝： | PLASTIC, SSOP-28 |
| 文件頁數(shù)： | 1/15頁 |
| 文件大?。?/td> | 233K |
| 代理商： | AD1855JRSRL |
a
AD1855*
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., 2000
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.
REV. B
Stereo, 96 kHz, Multibit
DAC
FUNCTIONAL BLOCK DIAGRAM
ATTEN/
MUTE
ATTEN/
MUTE
SERIAL
DATA
INTERFACE
8
INTERPOLATOR
MULTIBIT SIGMA-
DELTA MODULATOR
SERIAL CONTROL
INTERFACE
CLOCK
CIRCUIT
OUTPUT
BUFFER
OUTPUT
BUFFER
DAC
DAC
MULTIBIT SIGMA-
DELTA MODULATOR
VOLTAGE
REFERENCE
VOLUME
MUTE
CONTROL DATA
INPUT
3
2
DIGITAL
SUPPLY
CLOCK
IN
96/
48
F
S
CLOCK
ANALOG
OUTPUTS
2
2
ZERO
FLAG
ANALOG
SUPPLY
DE-EMPHASIS
MUTE
PD/RST
2
SERIAL
MODE
16-/18-/20-/24-BIT
DIGITAL
DATA INPUT
AD1855
8
INTERPOLATOR
3
384/
256
X2MCLK
FEATURES
5 V Stereo Audio DAC System
Accepts 16-/18-/20-/24-Bit Data
Supports 24 Bits and 96 kHz Sample Rate
Multibit Sigma-Delta Modulator with “Perfect Differen-
tial Linearity Restoration” for Reduced Idle Tones
and Noise Floor
Data Directed Scrambling DAC—Least Sensitive to
Jitter
Differential Output for Optimum Performance
113 dB Signal-to-Noise and Dynamic Range at 48 kHz
Sample Rate
110 dB Signal-to-Noise and Dynamic Range at 96 kHz
Sample Rate
–97 dB THD+N
On-Chip Volume Control with 1024 Steps
Hardware and Software Controllable Clickless Mute
Zero Input Flag Outputs for Left and Right Channels
Digital De-Emphasis Processing
Supports 128, 256, 384, and 512 F
S
Master Mode
Clock
Switchable Clock Doubler
Power-Down Mode Plus Soft Power-Down Mode
Flexible Serial Data Port with Right-Justified, Left-
Justified, I
2
S-Compatible and DSP Serial Port Modes
28-Lead SSOP Plastic Package
APPLICATIONS
DVD, CD, Set-Top Boxes, Home Theater Systems, Auto-
motive Audio Systems, Computer Multimedia Prod-
ucts, Sampling Musical Keyboards, Digital Mixing
Consoles, Digital Audio Effects Processors
*
Patents Pending.
PRODUCT OVERVIEW
The AD1855 is a high performance, single-chip stereo, audio
DAC delivering 113 dB Dynamic Range and SNR (A-weighted—
not muted) at 48 kHz sample rate. It is comprised of a multibit
sigma-delta modulator with dither, continuous time analog
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 AD1855 is fully com-
patible with current DVD formats, including 96 kHz sample
frequency and 24 bits. It is also backwards compatible by sup-
porting 50
μ
s/15
μ
s digital de-emphasis intended for “redbook”
44.1 kHz sample frequency playback from compact discs.
The AD1855 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 AD1855 can be configured in left-justified, I
2
S, right-
justified, or DSP serial port compatible modes. The AD1855
accepts 16-/18-/20-/24-bit serial audio data in MSB first, twos-
complement format. A power-down mode is offered to mini-
mize power consumption when the device is inactive. The
AD1855 operates from a single +5 V power supply. It is fabri-
cated on a single monolithic integrated circuit and housed in a
28-lead SSOP package for operation over the temperature range
0
°
C to +70
°
C.
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| AD1855 | Stereo, 96 kHz, Multibit DAC |
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