Application Note No. 069
鈩?/div>
matched output, pre-matched input
鈥?Integrated output DC blocking capacitor,
4
integrated RF choke on internal bias network
鈥?Low current consumption of 6 mA
SOT-343
鈥?鈥淪hutdown鈥?or 鈥淪leep鈥?mode
鈥?Unconditionally stable
鈥?Low external component count
鈥?Exceptional noise figure: 1.1 dB in a PC board at 2 GHz
Applications
鈥?Low Noise Amplifier for 800/900 MHz, GSM900, 900 MHz ISM, DCS1800, GPS,
1900 MHz PCS, 2.1 GHz UMTS and 2.4 GHz Wireless LAN
鈥?Long-Range Bluetooth applications requiring improved system sensitivity via use of
an external LNA
Introduction
The BGA622 is an easy-to-use, versatile and flexible low-cost
Low Noise Amplifier
(LNA) MMIC
designed for the high linearity and sensitivity requirements of existing and
next - generation wireless applications including GSM, 900 MHz ISM, GPS, UMTS and
Wireless LANs. Based on Infineon鈥檚 cost-effective 70 GHz
f
T
Silicon-Germanium (SiGe)
B7HF bipolar process technology, the BGA622 offers a 1.1 dB noise figure and 15 dB of
gain at 2.1 GHz for high performance, cost-effective mobile communications
applications. BGA622 offers impressive noise figure performance, particularly for a low-
cost, integrated MMIC. In the past, in-circuit noise figures approaching 1.0 dB at 2 GHz
were possible only for more expensive GaAs-based, fully discrete solutions utilizing
narrowband impedance matching and higher external parts count. The BGA622
combines the excellent noise figure advantages of a high-performance discrete solution
with the ease-of-use, low parts count, and diminished risk and reduced system
development time made possible by a MMIC approach.
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1
Application Note
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V3.0, 2001-10