MAX2452

19-0425; Rev 1; 9/95 KIT ATION EVALU BLE A IL A V A 3V, Ultra-Low-Power Quadrature Modulator ____________________________Features o IF Output Frequency up to 80MHz o Input Bandwidth up to 15MHz o On-Chip Oscillator with External Tuning Circuit o On-Chip Divide-by-8 Prescaler o Integrated Quadrature Phase Shifters o Self-Biased Differential Baseband Inputs o CMOS-Compatible Enable o 4.1mA Operating Supply Current 2µA Shutdown Supply Current _______________General Description The monolithic MAX2452 is a quadrature modulator with supporting oscillator and divide-by-8 prescaler. It operates from a single +3V supply and draws only 4.1mA. The modulator accepts differential I and Q baseband signals with amplitudes up to 1.35Vp-p and bandwidths up to 15MHz. It produces a differential output up to 80MHz. Pulling the CMOS-compatible ENABLE pin low reduces the supply current to 2µA. To minimize spurious feedback, the MAX2452’s internal oscillator is set at twice the IF via external tuning components. The oscillator and associated phase shifters produce differential signals exhibiting low amplitude and phase imbalance, yielding 42dB sideband rejection. The MAX2452 comes in a 16-pin narrow SO package. MAX2452 ________________________Applications Digital Cordless Phones GSM and North American Cellular Phones Wireless LANs Digital Communications Two-Way Pagers ______________Ordering Information PART MAX2452ISE* TEMP. RANGE -20°C to +85°C PIN-PACKAGE 16 Narrow SO * An alternate markin...