Datasheet > MX651

MX651

更新时间： 2024-11-03 22:45:47

品牌	Logo	应用领域
CMLMICRO		脉冲电话
页数	文件大小	规格书
14页	183K
描述
Telephone Subscriber Pulse Metering & Anti Fraud Tone Processor

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数据手册

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MX651 数据手册

DATA BULLETIN

Telephone

Subscriber Pulse Metering &

Anti Fraud Tone Processor

MX651

PRELIMINARY INFORMATION

Features

Applications

• Rapid 18kHz tone encoder-decoder can

transfer NRZ data

• Meets European 12kHz SPM Frequency

Specifications

Tx up to 166bps

Rx up to 62bps

• Payphone Applications

• Card Operated Telephone Installations

• Component Adjustable Input Sensitivity

• Low Power 3.3V/5.0V Operation

• 12kHz Subscriber Pulse Metering

Detector

EXT

NRZ

CLKIN

DATA

XTAL

Clock Oscillator

and Dividers

XTAL

Digital

Amplifier

Modulator

Band Pass

TXOUT

Filter

RX/TX

AMPOUT

Filtering and

Frequency Detection

12kHz Channel

DETECT

12kHz

Sample

& Hold

V_BIAS

V_SS

Filtering and

Frequency Detection

18kHz Channel

DETECT

18kHz

Sample

& Hold

V_DD

The MX651 is a low power integrated circuit which combines 12kHz Subscriber Pulse Metering (SPM) detection with

18kHz tone processing for anti-fraud purposes within a telephone system. Suitable for battery or line powered systems,

the MX651 is protected from crosstalk and false decoding by employing high accuracy switched capacitor filters. By using

simple logic or µProcessor control the MX651 will:

•

Decode 12kHz SPM pulses (in the presence of high level voice and 18kHz signaling) and provide a logic output.

Transmit an NRZ amplitude modulated 18kHz security tone to line.

Decode an incoming modulated 18kHz security tone (in the presence of high level voice and 12 kHz SPM tones)

and provide a logic output.

The MX651 is available in a 16-pin SOIC (MX651DW) and a 16-pin PDIP (MX651P) package.

•COM Inc.

www.mxcom.com Tele: 800 638-5577 910 744-5050 Fax: 910 744-5054

Doc. # 20480137.003

4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies.

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