MAX9947ETE+ [MAXIM]

AISG Integrated Transceiver; AISG集成收发器


型号：	MAX9947ETE+
厂家：	MAXIM INTEGRATED PRODUCTS
描述：	AISG Integrated Transceiver AISG集成收发器线路驱动器或接收器驱动程序和接口接口集成电路信息通信管理
文件：	总1页 (文件大小：389K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

ABRIDGED

19-5029; Rev 3; 7/11

AISG Integrated Transceiver

General Description

The MAX9947 is an AISG-compliant, fully integrated

transceiver.

Features

S Receiver Wide Input Dynamic Range

-15dBm to +5dBm in 50I

S Variable Transmitter Output Level from +7dBm to

The MAX9947 receiver offers a typical dynamic range of

20dB and integrates a bandpass filter that operates in the

2.176MHz frequency with a narrow 200kHz bandwidth.

+12dBm

S AISG-Compliant Output Emission Profile

S AutoDirection Output

The MAX9947 transmitter integrates a bandpass filter

that is compliant with the AISG spectrum emission pro-

file. It can modulate OOK signals up to 115.2kbps. The

output power can be varied with external resistors from

+7dBm to +12dBm to compensate for loss in the external

circuitry and cabling.

S No Need of Microcontrollers to Handle Bus

Arbitration in Tower-Mounted Equipment

S Supports All AISG Data Rates

9.6kbps

38.4kbps

115.2kbps

The MAX9947 also features a direction output to facilitate

the RS-485 bus arbitration in tower-mounted equipment.

S Bandpass Filter Compliant with AISG Protocol

Centered Around 2.176MHz

The MAX9947 is available in a small, 3mm x 3mm 16-pin

TQFN and is rated for operation in the -40°C to +85°C

temperature range.

S 3.0V to 5.5V Voltage Supply

S Independent Logic Supply

S Small, 3mm x 3mm 16-Pin TQFN Package

Applications

Base Stations

Ordering Information

TEMP

RANGE

TOP

MARK

Tower Equipment

PART

PIN-PACKAGE

-40NC to

+85NC

MAX9947ETE+

16 TQFN-EP*

AHF

+Denotes a lead(Pb)-free/RoHS-compliant package.

*EP = Exposed pad. Connect EP to GND to enhance thermal

dissipation.

Functional Diagram

RES

BIAS

1.5V

+7dBm TO +12dBm

XTAL1

TXOUT

ANALOG

SWITCH

XTAL2

TXIN

BANDPASS FILTER

DIRMD1

DIRMD2

SYNCOUT

MAX9947

DIRECTION

DETECTION

REF

DIR

STATE MACHINE

-15dBm

RXOUT

RXIN

OOK

BANDPASS FILTER

DEMODULATOR

GND

_______________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

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