MAX2411
Description
The MAX2411A performs the RF front-end transmit/ receive function in time-division-duplex (TDD) munication systems. It operates over a wide frequency range and is optimized for RF frequencies around 1.9GHz. Applications include most popular cordless and PCS standards. The MAX2411A includes a low-noise amplifier (LNA), a downconverter mixer, a local-oscillator buffer, an upconverter mixer, and a variable-gain power-amplifier (PA) driver in a low-cost, plastic surface-mount package. The MAX2411A’s unique bidirectional, differential IF port reduces cost and ponent count by allowing the transmit and receive paths to share the same IF filter. The LNA has a 2.4d B typical noise figure and a -10d Bm input third-order intercept point (IP3). The downconverter mixer has a low 9.2d B noise figure and 4d Bm input IP3. Image and local-oscillator filtering are implemented off-chip for maximum flexibility. The PA driver amplifier has 15d B of gain, which can be reduced over a 35d B range....
