Datasheet > AD6439-2BS

AD6439-2BS

更新时间： 2024-11-29 19:58:55

品牌	Logo	应用领域
亚德诺 - ADI		电信电信集成电路
页数	文件大小	规格书
12页	113K
描述
IC SPECIALTY TELECOM CIRCUIT, PQFP128, PLASTIC, MQFP-128, Telecom IC:Other

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AD6439-2BS 数据手册

Discrete Multitone (DMT) Coprocessor

for ADSL Chipsets

AD6439-2

FEATURES

GENERAL DESCRIPTION

Component in Analog Devices’ AD20msp918 ADSL

Chipset

Designed to ANSI T1.413 Issue 2/ETSI TR238/ITU

G.992.1 and G.992.2

Higher Performance

Improved Data Rates or Longer Reach

Suitable for CO (Central Office) or Residence (ATU-R

and ATU-C)

Performs All DMT Functions and Operations

Trellis Coding

The AD6439-2 Discrete Multitone Coprocessor is part of

Analog Devices’ ADSL solution: a series of flexible, standards-

based chipsets for creating high performance ADSL and SDSL

modems that implement a superset of standard Category 2

functionality. See the AD6439-2 Functional Block Diagram below.

A high-performance alternative to the AD6436 DMT Copro-

cessor, the AD6439-2 meets the functionality requirements of

ANSI T1.413 Category 2 (Trellis Coding and Echo Cancella-

tion), but is considerably more versatile. It implements both

transmit and receive paths (Trellis Coding/Decoding, IFFT/FFT,

filtering, and Echo Cancellation). Symmetric transforms allow

flexible allocation of upstream and downstream bandwidths,

including symmetric data rates. Improved digital filters exceed the

requirements of T1.413 and deliver strict spectral masks

(e.g., for VDSL compatibility).

Echo Cancellation

Symmetric Transforms (512 Point)

Flexible Allocation of Tones Upstream/Downstream

Supports Symmetric Services (SDSL)

Increased Upstream (e.g., 1 Mbps)

Supports ADSL Over ISDN (Shifted U/S, Program-

mable Pilot Tone)

Strict Filters for Spectral Compatibility

128-Lead MQFP

–40؇C to +85؇C, 3.3 V Operation, 1.1 W

FUNCTIONAL BLOCK DIAGRAM

DIGITAL FILTER

AD6439-2

Tx PATH

FILTERS

IFFT

512 PT

Tx SERIAL

Rx SERIAL

TRELLIS

DAC

ADC

ENCODE/

DECODE

FFT

512 PT

Rx PATH

FILTERS

CONTROL LOGIC

DSP PORT

REV. 0

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

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与AD6439-2BS相关器件

型号	品牌	获取价格	描述	数据表
AD6439BS	ADI	获取价格	IC SPECIALTY TELECOM CIRCUIT, PQFP128, PLASTIC, MQFP-128, Telecom IC:Other
AD644	ADI	获取价格	Dual High Speed, Implanted BiFET Op Amp
AD644J	ADI	获取价格	Dual High Speed, Implanted BiFET Op Amp
AD644JCHIPS	ADI	获取价格	暂无描述
AD644JH	ADI	获取价格	Dual High Speed, Implanted BiFET Op Amp
AD644JH	ROCHESTER	获取价格	DUAL OP-AMP, 3500uV OFFSET-MAX, 2MHz BAND WIDTH, MBCY8, HERMETIC SEALED, METAL CAN, TO-99,
AD644JH/+	ADI	获取价格	IC IC,OP-AMP,DUAL,BIPOLAR/JFET,CAN,8PIN,METAL, Operational Amplifier
AD644K	ADI	获取价格	Dual High Speed, Implanted BiFET Op Amp
AD644KH/+	ADI	获取价格	IC IC,OP-AMP,DUAL,BIPOLAR/JFET,CAN,8PIN,METAL, Operational Amplifier
AD644L	ADI	获取价格	Dual High Speed, Implanted BiFET Op Amp

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