MAX2402

V_CC.........................................................................-0.3V to +6.5V
Continuous Power Dissipation (T_A = +70°C)
    SSOP (derate 16.7mW/°C above +70°C) ....................1.33W
Operating Temperature Range ..........................-40°C to +85°C
Storage Temperature Range ...........................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+300°C

Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

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 compatible with both direct-sequence and frequencyhopping spread-spectrum designs in the 902MHz to 928MHz ISM band.

In a typical application, a digital baseband signal of MAX2402 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 -6dBm and +6dBm 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 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 2A in less than 10s. The MAX2402 comes in a 20-pin SSOP package to minimize board area.