SiGe Gain Block Helps Build Wireless Infrastructure

The SGA-7489 provides the circuit designer with a 50½ cascadable gain block featuring high output IP3 (+36 dBm at 850 MHz), high gain (22 dB at 850 MHz), and a noise figure of 2.9 dB from a single positive supply voltage. The silicon germanium (SiGe) device is to satisfy a broad range of wireless infrastructure and CATV requirements across the dc to 3,000 MHz band. And it also can serve as an IF amplifier, with an OIP3 of +38 dBm and P1dB of +23 dBm at 100 MHz. Housed in a standard surface-mount SOT-89 package with backside metallization, the amplifier requires only dc blocking, bypass capacitors and a bias inductor for external components. The SGA-7489 gain block is priced at $1.95 each/10,000. For further information, contact Steve Witmer at STANFORD MICRODEVICES INC., Sunnyvale, CA. (408) 616-5464.