SA910 - Philips

SA910 Variable gain RF predriver amplifier

The SA910 is a variable gain predriver amplifier designed for handheld analog cellular telephones. When used with a UHF power transistor, it forms a cost-effective, low-profile, surface mount power amplifier solution (1.2W maximum PAE > 50%). The SA910 integrates power detection and control circuitry that is stabilized over temperature and voltage. In power .

Features

• MMIC BiCMOS predriver amplifier
• Low voltage 2.7 to 5.5V single supply operation
• 820 to 905MHz bandwidth
• High power gain >20dB
• High power output >23dBm (typical) @ 3V
• Efficiency = 35% (typical)
• Wide gain control range: >32dB
• Few external components required
• Integrated power detector and comparison gain control circuitry
• 50Ω input, open-collector output
• SSOP-20 package
• Integrated regulator with offset adjustment for biasing an external output stage OUTLPF GND VC VCC BIAS SR01067 APPLICATIONS
• 900MHz analog cellular
• Handheld transmitting equipment in the 820 to 905.