详细描述
The RF7201 is a high-power, high-efficiency, dual-band, linear power amplifier designed for use as final amplification stages in 3V, 50Ω WCDMA mobile cellular equipment and spread-spectrum systems. This PA is developed for UMTS Bands 1 and 8 which operates in the transmit frequency bands from 1920MHz to 1980MHz and 880MHz to 915MHz, respectively. The RF7201 uses two digital control pins to select one of three power modes to optimize performance and current drain at lower power levels. The part also has one integrated directional coupler output which eliminates the need for an external discrete coupler for each band. The RF7201 is fully HSDPA compliant and is assembled on a 14-pin, 4mm x 5mm laminate module.
特点
Dual-Band 1/8 UMTS PA
HSDPA Compliant
Low Voltage Positive Bias Supply (3.0V to 4.2V)
High Efficiency Operation: 41% at POUT=+28.0dBm (Band 1) 41% at POUT=+28.5dBm (Band 8) 19% at POUT=+19.0dBm (without DC/DC converter)
Low Quiescent Current in Low Power Mode: 16mA
Internal Voltage Regulator Eliminates the Need for External Reference Voltage (VREF)
Common VMODE Control Lines Between Bands
3-Mode Power States for Each Band with Digital Control Interface
Supports DC/DC Converter Operation (VCC Pin)
Integrated Power Coupler
Integrated Blocking and Collector Decoupling Caps