DESCRIPTION
In a typical application, a digital baseband signal is mixed with a local oscillator signal to yield a BPSKmodulated carrier at the antenna. Alternatively, the baseband input may be grounded and an FSKmodulated LO signal applied directly to the LO port. The baseband modulation input is linear over a 2V range, and limits with larger signal levels within the supply range. The doublebalanced mixer has been optimized for high carrier rejection. The variable gain stage offers typically 40dB of adjustment range. The power amplifier provides more than 20dBm output power and has a bias adjustment, which allows adjustment of efficiency and harmonic distortion. A shutdown function reduces the current draw to less than 2µA in less than 10µs. The MAX2402 comes in a 20-pin SSOP package to minimize board area. ____________________________Features o Low-Cost, Flexible Transmitter o More than 100mW of Output Power into 50Ω o Operates from 800MHz to 1000MHz o Single +5V Supply o 20-Pin SSOP...
Maxim Integrated
