CMX018 Просмотр технического описания (PDF) - Unspecified

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CMX018

UHF FM/FSK Receiver

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CMX018

UHF FM/FSK Receiver

D/018/3 April 1999

Features

• Double Conversion Super-Heterodyne

Receiver and FM/FSK Demodulator

• LNA with Switched Gain

• High Performance UHF Down-Converter

Stage with Integrated VCO

• 2.7V Operation

• Zero-Power Mode (<10µA)

• 28-Pin SSOP Package

• Temperature Compensated RSSI

Advance Information

Applications

• High Performance Analogue/Digital

Radio Links (860-965MHz)

• General ISM 915MHz Band

• Analogue/Digital Cordless Phones

• Spread Spectrum Receivers

• Analogue FM Receivers

• Handheld Data Terminals

• So-Ho Wireless Data Links

GAINSEL

TANK

OSCOUT

OSCBA OSCEM

ENABLE

RSSI

BUFFERED

OSCILLATOR

OUTPUT

1st DOWN VCO

CONVERTER

LNAIN 50Ω

50Ω

LNA

50Ω

100Ω

100Ω

BANDGAP

& BIAS

CONTROL

2nd DOWN

CONVERTER

IF LIMITING

AMPLIFIER

430Ω

FM/FSK

DISCRIMINATOR

DETOUT

430Ω

LNADEC LNAOUT MIX1IN

MIX1OUT

MIX2IN

MIX2OUT LIMIN LIMDEC1 LIMDEC2

LIMOUT

QUADIN

1.1 Brief Description

The CMX018 is a single chip UHF FM/FSK double-conversion super-heterodyne receiver. It combines

a dual gain mode Low Noise Amplifier (LNA), two down-converters (including integrated oscillators),

limiting amplifier, RSSI, FM/FSK demodulator and zero-power mode control.

The CMX018 can be used in conjunction with the CMX017, an integrated FM/FSK modulator and

transmitter, to implement a complete UHF radio link.

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