Description
The Hewlett-Packard HPMX-5002 IF Modulator/Demodulator provides all of the active components necessary for the demodulation of a downconverted DECT signal. Designed specifically for DECT, the HPMX-5002 contains a down-conversion mixer (to a 2nd IF), limiting amplifier chain, discriminator/data slicer, lock detector, and RSSI circuits. The LO2 generation is also included on-chip, via a VCO, dividers, and phase/frequency detector. The divide ratios are programmable to support reference frequencies of either 9, 12, or 16 times the DECT bit rate of 1.152␣ MHz allowing the use of common, low cost crystals.

Features
• Use with HPMX-5001 Up/Down Converter Chip for DECT Telephone Applications
• 2.7–5.5 V Single Supply Voltage
• >75 dB RSSI Range
• Internal Data Slicer
• On-chip LO Generation, Including VCO, Prescalers and Phase/Frequency Detector
• Flexible Chip Biasing, Including Standby Mode
• Supports Reference Crystal Frequencies of 9, 12, and 16 Times the DECT Bit Rate (1.152 MHz)
• IF Input Frequency Range up to 250 MHz
• TQFP-48 Surface Mount Package

Applications
• DECT, Unlicensed PCS and ISM Band Handsets, Basestations and Wireless LANs