General Description

The MAX2680/MAX2681/MAX2682 miniature, low-cost, low-noise downconverter mixers are designed for low voltage operation and are ideal for use in portable communications equipment. Signals at the RF input port are mixed with signals at the local oscillator (LO) port using a double-balanced mixer. These downconverter mixers operate with RF input frequencies between 400MHz and 2500MHz, and downconvert to IF output frequencies between 10MHz and 500MHz.

Features

● 400MHz to 2.5GHz Operation

● +2.7V to +5.5V Single-Supply Operation

● Low Noise Figure: 6.3dB at 900MHz (MAX2680)

● High Input Third-Order Intercept Point (IIP3 at 2450MHz)

• -6.9dBm at 5.0mA (MAX2680)

• +1.0dBm at 8.7mA (MAX2681)

• +3.2dBm at 15.0mA (MAX2682)

● < 0.1μA Low-Power Shutdown Mode

● Ultra-Small Surface-Mount Packaging

Applications

● 400MHz/900MHz/2.4GHz ISM-Band Radios

● Personal Communications Systems (PCS)

● Cellular and Cordless Phones

● Wireless Local Loop

● IEEE-802.11 and Wireless Data