General Description
The PMB 2208 contains a direct quadrature modulator and an up/down conversion mixer with corresponding bias circuitry.

Features
■ Direct quadrature modulator and up/down-conversion mixer on one chip
■ Modulator:
    - LO input frequency range from 200MHz to 550MHz corresponds to an output frequency range from 100MHz to 275MHz
    - Generation of orthogonal carriers without external elements and without trimming
    - typ. 48dB carrier suppression with 1Vpp baseband level
    - typ. 49dB SSB suppression with 1Vpp baseband level
    - typ. 51dB rejection of third-order intermodulation products with 1Vpp baseband level
    - Low output noise floor
■ Mixer:
    - Double-balanced Gilbert cell
    - RF and IF frequency range from DC to 2.5GHz
    - typ 39dB carrier suppression
    - Low noise
■ Supply voltage range from 2.7 to 4.5V
■ Power-down mode
■ Temperature range -30 to 85°C

Application
■ Vector-modulated digital mobile cellular systems, such as GSM, PDC-800, PDC-1.5, PHS, DAMPS, DCS1800, WLAN, etc.
■ Various modulation schemes, such as PM, PSK, FSK, QAM, QPSK, GMSK, etc.
■ Analog systems with FM and AM modulation
■ Space- and power-saving optimizations of existing discrete transmitter circuits