HPMX-5002

Notes:
1. Operation of this device in excess of any of these parameters may cause permanent damage.
2. Tcase = 25°C
3. Derate at 10 mW/°C for Tcase > 90°C
4. Except CMOS logic inputs, see Summary Characterization Information Table.

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 1.152ÊMHz allowing the use of common, low cost crystals.

The LO2 VCO of HPMX-5002 can also be utilized in transmit mode by directly modulating the external VCO tank. An AGC loop in the buffered VCO output suppresses harmonics and reduces signal level variability.

The HPMX-5002 is designed to meet the size and power demands of portable applications. Battery cell count and cost are reduced due to the 2.7 V minimum supply voltage.The TQFP-48 package, combined with the high level of integration, means smaller footprints and fewer components. Flexible chip biasing takes full advantage of the power savings inherent in time-duplexed systems such as DECT.