AD1857

更新时间： 2024-02-22 01:24:47

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
16页	265K
描述
Stereo, Single Supply 16-, 18- and 20-Bit Sigma-Delta DACs

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技术参数
数据手册

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AD1857 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Obsolete	零件包装代码：	SSOP
包装说明：	SSOP-20	针数：	20
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.7
商用集成电路类型：	CONSUMER CIRCUIT	JESD-30 代码：	R-PDSO-G20
JESD-609代码：	e3	长度：	7.2 mm
湿度敏感等级：	1	功能数量：	1
端子数量：	20	最高工作温度：	70 °C
最低工作温度：		封装主体材料：	PLASTIC/EPOXY
封装代码：	SSOP	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE, SHRINK PITCH	峰值回流温度（摄氏度）：	260
认证状态：	Not Qualified	座面最大高度：	1.98 mm
最大压摆率：	65 mA	最大供电电压 (Vsup)：	5.25 V
最小供电电压 (Vsup)：	4.75 V	表面贴装：	YES
技术：	CMOS	温度等级：	COMMERCIAL
端子面层：	MATTE TIN	端子形式：	GULL WING
端子节距：	0.65 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	40	宽度：	5.3 mm
Base Number Matches：	1

AD1857 数据手册

Stereo, Single Supply

16-, 18- and 20-Bit Sigma-Delta DACs

AD1857/AD1858

P RO D UCT O VERVIEW

FEATURES

T he AD1857/AD1858 are complete single-chip stereo digital

audio playback components. T hey each comprise an advanced

digital interpolation filter, a revolutionary “linearity-compensated”

multibit sigma-delta (∑∆) modulator with dither, a jitter-tolerant

DAC, switched capacitor and continuous time analog filters and

analog output drive circuitry. Other features include digital

de-emphasis processing and mute. T he AD1857/AD1858

support continuously variable sample rates with essentially

linear phase response, and support 50/15 µs digital de-emphasis

intended for “Redbook” 44.1 kHz sample frequency playback

from Compact Discs. T he user must provide a master clock that

is synchronous with the left/right clock at 256 or 384 times the

Low Cost, High Perform ance Stereo DACs

128 Tim es Oversam pling Interpolation Filter

Multibit ⌺⌬ Modulator w ith Triangular PDF Dither

Discrete Tim e and Continuous Tim e Analog

Reconstruction Filters

Extrem ely Low Out-of-Band Energy

Buffered Outputs w ith 2 k⍀ Output Load Drive

94 dB Dynam ic Range, –90 dB THD+N Perform ance

Digital De-em phasis and Mute

؎0.1؇C Maxim um Phase Linearity Deviation

Continuously Variable Sam ple Rate Support

Pow er-Dow n Mode

16-, 18- and 20-Bit I²S-J ustified, Left-J ustified Modes

Offered on AD1857

intended sample frequency.

T he AD1857/AD1858 have a 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 con-

verters. T he AD1857 serial data input port can be configured

in either 16-bit, 18-bit or 20-bit left-justified or I²S-justified

modes. T he AD1858 serial data input port can be configured in

either 16-bit right-justified or DSP serial port compatible modes.

T he AD1857/AD1858 accept serial audio data in MSB first,

twos-complement format. A power-down mode is offered to

minimize power consumption when the device is inactive. T he

AD1857/AD1858 operate from a single +5 V power supply.

T hey are fabricated on a single monolithic integrated circuit and

housed in 20-pin SSOP packages for operation over the

temperature range 0°C to +70°C.

Accepts 24-Bit Word

16-Bit Right-J ustified and DSP Serial Port Modes

Offered on AD1858

Single +5 V Supply

20-Pin SSOP Package

APPLICATIONS

Digital Cable TV and Direct Broadcast Satellite Set-Top

Decoder Boxes

Video Laser Disk, Video CD and CD-I Players

High Definition Televisions, Digital Audio Broadcast

Receivers

CD, CD-R, DAT, DCC and MD Players

Digital Audio Workstations, Com puter Multim edia

Products

FUNCTIO NAL BLO CK D IAGRAM

CLOCK

MODE

DIGITAL

SUPPLY

COMMON

MODE

16-/18-/20-BIT

DIGITAL

SERIAL DATA

INTERFACE

VOLTAGE

REFERENCE

CLOCK

CIRCUIT

DATA INPUT

AD1857/AD1858

128x

INTERPOLATION

FILTER

MULTIBIT

Σ∆ MODULATOR

OUTPUT

BUFFER

ANALOG

FILTER

DAC

MUTE

SERIAL

MODE

ANALOG

OUTPUTS

128x

INTERPOLATION

FILTER

ANALOG

FILTER

MULTIBIT

Σ∆ MODULATOR

OUTPUT

BUFFER

DAC

MUTE

DE-EMPHASIS

MUTE

ANALOG

SUPPLY

POWER-DOWN/RESET

REV. 0

Inform ation furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assum ed by Analog Devices for its

use, nor for any infringem ents of patents or other rights of third parties

which m ay result from its use. No license is granted by im plication or

otherwise under any patent or patent rights of Analog Devices.

One Technology Way, P.O. Box 9106, Norw ood, MA 02062-9106, U.S.A.

Tel: 617/ 329-4700

Fax: 617/ 326-8703

World Wide Web Site: http:/ / w w w .analog.com

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