MAX2402
Description
The MAX2402 transmitter integrates a double-balanced mixer, buffered local oscillator (LO) port, variable gain stage, and power amplifier into a single IC. It is intended for use in the 800MHz to 1000MHz band, and is patible with both direct-sequence and frequencyhopping spread-spectrum designs in the 902MHz to 928MHz ISM band. 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 LO port consists of a limiting amplifier that can accept a single-ended or differential signal with input power between -6d Bm and +6d Bm in the 800MHz to 1000MHz frequency range. 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...
