ST70136

更新时间： 2024-11-22 22:42:39

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		/
页数	文件大小	规格书
24页	362K
描述
CPE ADSL ANALOG FRONT END

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中文翻译

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数据手册

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ST70136 数据手册

ST70136

CPE ADSL ANALOG FRONT END

■ WIDE TRANSMIT AND RECEIVE DYNAMIC

RANGE TO REDUCE EXTERNAL

FILTERING REQUIREMENTS

The AFE receive path contains a programmable

gain amplifier (RxPGA), a low pass anti-aliasing

filter, and a 12-bit A/D converter. The RxPGA is

digitally programmable from 0 to 31dB in 1dB

steps.

■ RECEIVE PROGRAMMABLE GAIN: 0 TO

31dB GAIN IN 1dB STEPS

■ RECEIVE PROGRAMMABLE ATTENUATOR

0,-4dB, -8dB, -12dB

The AFE transmit path consists of a 14-bit D/A

converter, followed by a programmable gain

amplifier (TxPGA). The transmit gain is program-

mable from 0 to -15dB in 1dB steps.

■ 12-BIT A/D CONVERTER IN RECEIVE PATH

■ TRANSMIT PROGRAMMABLE GAIN: 0 TO

-15dB IN 1dB STEPS

■

14-BIT D/A CONVERTER IN TRANSMIT PATH

■ LOW POWER MODE: 10mW IN LISTENING

MODE, 250 W IN POWER DOWN

■ TONE DETECTOR: ACTIVITY DETECTION

FOR WAKE-UP FUNCTION

■ 64-PIN TQFP PACKAGE

■ 64-PIN LFBGA PACKAGE

■ 0.50µm, 5V BICMOS TECHNOLOGY

■ 3.3V DIGITAL INTERFACE

■ 5V ANALOG INTERFACE

TQFP64 Full Plastic

(10 x 10 x 1.40 mm)

ORDER CODE: ST70136G

INTRODUCTION

The ST70136 ADSL Analog Front End (AFE) chip

implements the analog transceiver functions

required in a Customer Premise ADSL modem. It

connects the digital modem chip with the loop

driver and hybrid balance circuits.

The AFE has been designed with high dynamic

range in order to greatly reduce the external filter-

ing requirements at the front end.

LFBGA64

(8 x 8 x 1.7 mm)

The AFE chip and its companion digital chip along

with a loop driver, implement the complete

G.992.2 and G.992.1 DMT modem solution.

ORDER CODE: ST70136B

Figure 1 : Overall Application Block Diagram

Software for Control xDSL

LINE

PCI

USB

xDSL

AFE

LOOP

DRIVER

HYBRID

DMT

USB

ST70137

ST70136

TS612/TS652

September 2001

1/24

12 3 4 5 6 7...24

中文翻译

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与ST70136相关器件

型号	品牌	获取价格	描述	数据表
ST70136B	STMICROELECTRONICS	获取价格	CPE ADSL ANALOG FRONT END
ST70136G	STMICROELECTRONICS	获取价格	CPE ADSL ANALOG FRONT END
ST70137	STMICROELECTRONICS	获取价格	UNICORNTM PCI & USB CONTROLLERLESS ADSL DMT TRANSCEIVER
ST70137TQFP	STMICROELECTRONICS	获取价格	UNICORNTM PCI & USB CONTROLLERLESS ADSL DMT TRANSCEIVER
ST70138	STMICROELECTRONICS	获取价格	PCI/USB ADSL CHIPSET
ST70138B	STMICROELECTRONICS	获取价格	PCI/USB ADSL CHIPSET
ST70138T	STMICROELECTRONICS	获取价格	PCI/USB ADSL CHIPSET
ST70235A	STMICROELECTRONICS	获取价格	ASCOTTM DMT TRANSCEIVER
ST70-27F	SHINDENGEN	获取价格	Trankiller
ST70-27F_10	SHINDENGEN	获取价格	Power zener Diode