Low-ower RF Transceiver has Integrated Power Amplifier, Rx/Tx/antenna Diversity Switches and Crystal Oscillator Circuitry

( 1 Jan 2008 )

Maxim Integrated Products has released its MAX2830 single-chip, direct-conversion, low power 802.11g/b RF transceiver with integrated power amplifier, Rx/Tx/antenna diversity switches and crystal oscillator circuitry. Its small size makes it well suited for Wi-Fi, PDA, VoIP and cellular handset applications. It also integrates digitally controlled crystal oscillator (DCXO) circuitry to implement the reference oscillator function, allowing the use of small, low-power crystals.

The transceiver operates from a 2.7V to 3.6V supply, and the PA operates from 2.7V to 4.2V, allowing the device to be powered directly from cell phone batteries. The receiver consumes 62mA of current in receive mode while achieving a low noise figure of 3.3dB, enabling receive sensitivity of -75dBm (64QAM OFDM) without an external LNA.

Maxim Integrated Products
www.maxim-ic.com