MAX2402 Datasheet | Maxim Integrated

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 typically 40d B of adjustment range. The power amplifier provides more than 20d Bm 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 es in a 20-pin SSOP package to minimize board area. ____________________________Features o Low-Cost, Flexible Transmitter o More than 100m W of Output Power into 50Ω o Operates from 800MHz to 1000MHz o Single +5V Supply o 20-Pin SSOP Package o Uses Less than 2µA in Power-Down o More than 35d B of Power Adjustment Range o LO Input Power Range from -6d Bm to +6d Bm o 2V Linear Range on Modulation Input ______________Ordering Information PART MAX2402EAP- TEMP. RANGE -40°C to +85°C PIN-PACKAGE 20 SSOP - An alternate marking, MAX2402CAP, has been identically tested. ________________________Applications Direct-Sequence Spread-Spectrum Transmitter Frequency-Hopping Spread-Spectrum Transmitter FSK, GMSK, BPSK,...