FX651 Datasheet

IC型號：
FX651
PDF描述：
CML Semiconductor Products SPM and Security Subsystem
文件大小：
457.84KB
PDF頁數(shù)：
16頁
芯片廠家：
CMLMICRO

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CML Semiconductor Products

SPM and Security Subsystem

1.0

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FX651

D/651/4 September 1997

Provisional Information

Features

Two Integrated Telecoms

Functions:

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Low Power (3.3V) Requirement

Component Adjustable Input

Sensitivity

Meets European 12kHz SPM

Frequency Specifications

Worldwide Pay-Phone

Applications

12kHz SPM Detector

Half Duplex 18kHz Modem

Compact 16-pin Small Outline

(SOIC) Package

Card Operated Telephone

Installations

BIAS

1.1

Brief Description

The FX651 integrated circuit combines 12kHz Subscriber Private Metering (SPM) detection with 18kHz

tone processing for anti-fraud purposes within a telephone system. This compact, low power device is

suitable for battery or line powered systems. Under simple logic or

碌Processor

control it will:

Decode 12kHz SPM pulses in the presence of high level voice and 18kHz signalling, and

provide a logic output.

Transmit an NRZ 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.

Employing high accuracy switched capacitor filters, the FX651 is protected from crosstalk and false

decoding.

漏

1997 Consumer Microcircuits Limited

型號

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描述

廠商

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FX651

英文版

CML Semiconductor Products SPM and Security Subsystem

CMLMICRO

FX651
FX651

英文版

CML Semiconductor Products SPM and Security Subsystem

CMLMICRO [...

FX651

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