The ADA-4789 is the latest addition to Avago’s proven family of silicon bipolar Darlington amplifiers. With a power budget of 3.8 V/60 mA, the ADA-4789 delivers 32.6 dBm of OIP3 (Linearity), 17.1 dBm of output power, 16.5 dB of gain and 4.2 dB of noise figure at 900 MHz; at 2Ghz it provides 28.8 dBm of OIP3, 16.2 dBm of output power and 4.4 dB of noise figure. For a higher power budget of 4.1 V/80 mA, the ADA-4789 is able to boost the performance to 33.2 dBm of OIP3, 18.8 dBm of output power, 16.9 dB of gain and 4.2 dB of noise figure at 900 MHz.
Bipolar Darlingtons in a low thermal resistant SOT-89 package
Avago Technologies has announced its ADA-4789, a cost-efficient, high linearity silicon bipolar Darlington amplifier in a low thermal resistant SOT-89 package for use up to 2.5GHz. The ADA-4789’s unconditional stability and broad bandwidth performance make it ideal for IF amplifier and pre-driver amplifier applications in cellular base stations, as well as IF amplifiers in direct broadcast satellite and cable television infrastructures. Additionally, the internal 50-ohms matching circuitry simplifies design and provides shorter time-to-market.
