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73M1903

更新时间： 2024-11-14 06:31:43

品牌	Logo	应用领域
TERIDIAN		调制解调器
页数	文件大小	规格书
46页	530K
描述
Modem Analog Front End

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中文翻译

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73M1903 数据手册

73M1903

Modem Analog Front End

Simplifying System Integration^TM

DATA SHEET

February 2009

DESCRIPTION

FEATURES

The Teridian 73M1903 Analog Front End (AFE)

IC includes fully differential hybrid driver outputs,

which connect to the telephone line interface

through a transformer-based DAA. The receive

pins are also fully differential for maximum

flexibility and performance. This arrangement

allows for the design of a high performance

hybrid circuit to improve signal to noise

•

Up to 56 kbps (V.92) performance

Programmable sample rates (7.2 - 14.4 kHz)

Reference clock range of 9-40 MHz

Crystal frequency range of 9-27 MHz

Host synchronous serial interface operation

Pin compatible with 73M2901CL/CE

modems

performance under low receive level conditions,

and compatibility with any standard transformer

intended for PSTN communications applications.

•

Low power modes

On board line interface drivers

Fully differential receiver and transmitter

Drivers for transformer interface

3.0 V – 3.6 V operation

The device incorporates a programmable

sample rate circuit to support soft modem and

DSP based implementations of all speeds up to

V.92 (56 kbps). The sampling rates supported

are from 7.2 kHz to 14.4 kHz by programming

pre-scaler NCO and PLL NCO.

5 V tolerant I/O

Industrial temperature range (-40 to +85 °C)

JATE compliant transmit spectrum

Package options:

The 73M1903 device incorporates a digital host

interface that is compatible with the serial ports

found on most commercially available DSPs and

processors and exchanges both payload and

control information with the host.

•

32-pin QFN

20-pin TSSOP

•

RoHS compliant (6/6) lead-free packages

Cost-saving features of the device include an

input reference frequency circuit, which accepts

a range of crystals from 9-27 MHz. It also

accepts external reference clock values between

9-40 MHz generated by the host processor. In

most applications, this eliminates the need for a

dedicated crystal oscillator and reduces the bill

of material (BOM).

APPLICATIONS

•

Set Top Boxes

Personal Video Recorders (PVR)

Multifunction Peripherals (MFP)

Fax Machines

Internet Appliances

Game Consoles

The 73M1903 also supports two analog loop

back and one digital loop back test modes.

Point of Sale Terminals

Automatic Teller Machines

Speaker Phones

VBG

(HYBRID)

Transmit

Drivers/

Filters

Analog

Sigma

Delta

TXAP

TXAN

Ref.

RF Modems

SCLK

SDIN

Receive

Mux/

Filters

RXAP

RXAN

Control

Registers

Serial

Port

SDOUT

DAC

FSB

GPIO

DAA

Controls

Control

Logic

Clocks

Crystal

HOOK

Rev. 2.0

12 3 4 5 6 7...46

中文翻译

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与73M1903相关器件

型号	品牌	获取价格	描述	数据表
73M1903C	TERIDIAN	获取价格	Modem Analog Front End
73M1903C-IM	TERIDIAN	获取价格	Consumer Circuit, LEAD FREE, QFN-32
73M1903C-IM/F	TERIDIAN	获取价格	Modem Analog Front End
73M1903C-IMR/F	TERIDIAN	获取价格	Modem Analog Front End
73M1903-IGV	TERIDIAN	获取价格	Consumer Circuit, PQFP32, TQFP-32
73M1903-IGV/F	TDK	获取价格	Modem, PQFP32
73M1903-IGV/F	TERIDIAN	获取价格	Consumer Circuit, PQFP32, LEAD FREE, TQFP-32
73M1903-IM	TDK	获取价格	Modem, PQCC32
73M1903-IM	TERIDIAN	获取价格	Consumer Circuit, QFN-32
73M1903-IM/F	TERIDIAN	获取价格	Modem Analog Front End

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