DATA BULLETIN
CMX018 UHF FM/FSK Receiver
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)
• Temperature Compensated RSSI
• 28-Pin SSOP Package
ADVANCE INFORMATION
Applications
• High Performance Analog/Digital
Radio Links (860-965MHz)
• General ISM 915MHz Band
• Analog/Digital Cordless Phones
• Spread Spectrum Receivers
• Analog FM Receivers
• Handheld Data Terminals
• SO-HO Wireless Data Links
GAINSEL
TANK
OSCOUT OSCBA OSCEM
BUFFERED
OSCILLATOR
OUTPUT
1ST DOWN
CONVERTER
VCO
2ND DOWN
CONVERTER
50W
50W
LNAIN
LNA
50W
100W
100W
430W
ENABLE
BANDGAP
& BIAS
CONTROL
RSSI
IF LIMITING
AMPLIFIER
FM/FSK
DISCRIMINATOR
430W
DETOUT
LNADEC LNAOUT MIX1IN
MIX1OUT MIX2IN
MIX2OUT LIMIN
LIMDEC1 LIMDEC2
LIMOUT
QUADIN
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.
The CMX018 operates from a 2.7V to 3.3V power supply and is available in the following package style:
28-pin SSOP (CMX018D6).
©1999 MX-COM, Inc.
www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054
Doc. # 20480194.003
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA
All trademarks and service marks are held by their respective companies.