Datasheet > 1N5268AFE1205

1N5268AFE1205

更新时间： 2024-11-18 23:18:19

品牌	Logo	应用领域
其他 - ETC		/
页数	文件大小	规格书
10页	199K
描述
2Mbps. Single Pair HDSL ANALOG FRONT END

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1N5268AFE1205 数据手册

AFE1205

2Mbps, Single Pair HDSL ANALOG FRONT END

● 48-LEAD SSOP PACKAGE

FEATURES

● SCALEABLE DATA RATE

● E1/T1 SINGLE PAIR 2B1Q OPERATION

● OPERATION FROM 2.3Mbps TO 160kbps

● COMPLETE ANALOG INTERFACE

● +5V ONLY (5V OR 3.3V DIGITAL)

● 385mW POWER DISSIPATION

● PROGRAMMABLE POWER

● –40°C TO +85°C OPERATION

on a single 5V supply. The digital circuitry in the unit can be

DESCRIPTION

connected to a supply from 3.3V to 5V. The chip uses only

Burr-Brown’s Analog Front End greatly reduces the size and

cost of a single pair HDSL (High bit rate Digital Subscriber

Line) system by providing all of the active analog circuitry

needed to connect an HDSL digital signal processor to an

external compromise hybrid and an HDSL line transformer.

The transmit and receive filter responses automatically change

with clock frequency, allowing the AFE1205 to operate over a

wide range of data rates. The power dissipation of the device

can be reduced under digital control for operation at lower

speeds. The AFE1205 will operate at bit rates from 160kbps to

2.3Mbps. It meets ETSI PSD specifications for single pair E1,

as well as ETSI and ANSI PSD specifications for two pair E1

and T1.

385mW for full-speed operation. It is housed in a small 48-lead

SSOP package.

The receive channel is designed around a fourth-order delta-

sigma analog-to-digital converter. It includes a difference am-

plifier designed to be used with an external compromise hybrid

for first-order analog echo cancellation. A programmable gain

amplifier with gains 0dB to +9dB is also included. The delta-

sigma modulator, operating at a 24X oversampling ratio, pro-

duces a 14-bit output at symbol rates up to 1168kHz (for

2.3Mbps operation).

The transmit channel consists of a digital-to-analog converter and

switched-capacitor pulse forming network followed by a differ-

ential line driver. The pulse forming network receives symbol

data and generates a standard 2B1Q output waveform. The

differential line driver uses a composite output stage combining

class B operation (for high efficiency driving large signals) with

class AB operation (to minimize crossover distortion).

Functionally, this unit consists of a transmit and a receive

section. The transmit section generates, filters, and buffers

outgoing 2B1Q data. The receive section filters and digitizes

the symbol data received on the telephone line. This IC operates

txLINE_P

D/A

Converter

Pulse

Former

Line

Driver

txLINE_N

REF_P

V_CM

PLL_OUT

Voltage

Reference

PLL_IN

Transmit

Control

REF_N

txDAT

txCLK

rxSYNC

Receive

rxLOOP

Control

rxLINE_P

rxLINE_N

rxHYB_P

rxHYB_N

rxGAIN

Delta-Sigma

Modulator

Decimation

rxD13 - rxD0

Filter

Patents Pending

International Airport Industrial Park

•

Mailing Address: PO Box 11400, Tucson, AZ 85734

•

Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706

•

Tel: (520) 746-1111

• Twx: 910-952-1111

Internet: http://www.burr-brown.com/

•

FAXLine: (800) 548-6133 (US/Canada Only)

•

Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132

PDS-1461A

Printed in U.S.A. September, 1998

12 3 4 5 6 7...10

中文翻译

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与1N5268AFE1205相关器件

型号	品牌	获取价格	描述	数据表
1N5268-AP	MCC	获取价格	Zener Diode, 82V V(Z), 20%, 0.5W, Silicon, Unidirectional, DO-35, ROHS COMPLIANT, GLASS PA
1N5268ATR	MICROSEMI	获取价格	Zener Diode, 82V V(Z), 10%, 0.48W, Silicon, Unidirectional, DO-204AH, HERMETIC SEALED, GLA
1N5268ATRE3	MICROSEMI	获取价格	Zener Diode, 82V V(Z), 10%, 0.5W,
1N5268AUR	MICROSEMI	获取价格	500 mW GLASS SURFACE MOUNT ZENER DIODES
1N5268AUR-1	MICROSEMI	获取价格	Zener Diode
1N5268AUR-1E3TR	MICROSEMI	获取价格	Zener Diode, 82V V(Z), 10%, 0.5W, Silicon, Unidirectional, DO-213AA, HERMETIC SEALED, GLAS
1N5268AUR-1TR	MICROSEMI	获取价格	Zener Diode, 82V V(Z), 10%, 0.5W, Silicon, Unidirectional, DO-213AA, HERMETIC SEALED, GLAS
1N5268AUR-1TRE3	MICROSEMI	获取价格	Zener Diode, 82V V(Z), 10%, 0.5W,
1N5268AURE3	MICROSEMI	获取价格	Zener Diode, 82V V(Z), 10%, 0.5W, Silicon, Unidirectional, DO-213AA, ROHS COMPLIANT, HERME
1N5268AURE3TR	MICROSEMI	获取价格	Zener Diode, 82V V(Z), 10%, 0.5W, Silicon, Unidirectional, DO-213AA, HERMETIC SEALED, GLAS

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