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FX128

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FX128 数据手册

CML Semiconductor Products

Cordless Telephone Scrambler FX128

October 1997

Provisional Information

D/128/1

Features

•

Full-Duplex Audio Processing

•

Excellent Audio Quality

On-Chip Filters

Low Power Operation (3.0V)

ECPA* Qualified Voice Protection

Battery Powered Portability

Cordless Telephones and Wireless PBX

Applications

Carrier Rejection >55dB

Uses IF (10.24MHz) Clock

Requires No Extra Crystal

1.1

Brief Description

The FX128 is a full-duplex frequency inversion scrambler designed to provide secure conversations for

46/49 MHz cordless telephone users. The Rx and Tx audio paths consist of the following:

1. A switched-capacitor balanced modulator with high baseband and carrier rejection.

2. A 3.3kHz inversion carrier (injection tone).

3. A 3100Hz lowpass filter.

4. Input op-amps with externally adjustable gain.

The FX128 uses mixed signal CMOS switched-capacitor filter technology and operates from a single supply in

the range of 3.0 to 5.5 volts. The inversion carrier's frequency and filter switching clock are generated on-chip

using an external 10.24MHz or 3.58/3.6864 MHz crystal or clock input (selectable).

This device is available in 16-pin SOIC (FX128D4) and 16-pin plastic DIL (FX128P3) packages.

*Electronics Communications Privacy Act (Title 18, US Code 2510 etc.).

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型号	品牌	获取价格	描述	数据表
FX128D4	CMLMICRO	获取价格	Cordless Telephone Scrambler/Descrambler, CMOS, PDSO16, PLASTIC, SOIC-16
FX128E4	CMLMICRO	获取价格	Cordless Telephone Scrambler/Descrambler, CMOS, PDSO16, TSSOP-16
FX128P3	CMLMICRO	获取价格	Cordless Telephone Scrambler/Descrambler, CMOS, PDIP16, PLASTIC, DIP-16
FX12A-24P-0.4SV	HRS	获取价格	Board Connector, 24 Contact(s), 1 Row(s), Male, Straight, Surface Mount Terminal, Plug, RO
FX12A-24S-0.4SV	HRS	获取价格	Board Connector, 24 Contact(s), 1 Row(s), Female, Straight, Surface Mount Terminal, Recept
FX12A-40P-0.4SV	HRS	获取价格	Board Connector, 40 Contact(s), 1 Row(s), Male, Straight, Surface Mount Terminal, Plug, RO
FX12A-40S-0.4SV	HRS	获取价格	Board Connector, 40 Contact(s), 1 Row(s), Female, Straight, Surface Mount Terminal, Recept
FX12B	ETC	获取价格	LIQUID/PENETRATION PROBE
FX12B-24P-0.4SV	HRS	获取价格	Board Connector, 24 Contact(s), 2 Row(s), Male, Straight, 0.016 inch Pitch, Surface Mount
FX12B-24P-0.4SV(30)	HRS	获取价格	Board Connector, 24 Contact(s), 2 Row(s), Male, Straight, 0.016 inch Pitch, Surface Mount