Wi-Fi transceiver takes more onboard
Ultra-low-power 802.11g/b RF transceiver integrates a power amplifier, Rx/Tx/antenna diversity switches and crystal oscillator circuitry.
Maxim Integrated Products has released the MAX2830, a single-chip direct-conversion ultra-low-power 802.11g/b RF transceiver with integrated power amplifier (PA), Rx/Tx/antenna diversity switches and crystal oscillator circuitry It is the industry's first transceiver to integrate Rx/Tx and antenna diversity switches, thus saving 10mm2 of board space and US $0.25 of BOM cost over competing solutions
The low cost and small size of this highly integrated transceiver make the MAX2830 ideal for Wi-Fi, PDA, VoIP and cellular handset applications.
The MAX2830 also integrates digitally controlled, crystal oscillator (DCXO) circuitry to implement the reference oscillator function, thus allowing the use of small, low-cost, low-power crystals.
Competing solutions implement this same function by using higher-cost, larger, external crystal oscillators (XOs) that consume more current and increase BOM cost by $0.50.
The MAX2830 is designed using Maxim's proprietary high-performance SiGe BiCMOS process.
The receiver consumes 62mA of current in receive mode, while achieving a low-noise figure of 3.3dB, thus enabling best-in-class receive sensitivity of -75dBm (64QAM OFDM) without an external LNA.
Additionally, the transmitter and PA deliver best-in-class linear transmit power of +17dBm (64QAM OFDM) after the switch.
A 20uA low-power shutdown mode is available to further save power.
The MAX2830 is available in a small, 7 x 7mm, leadless 48-pin TQFN-EP package.
Pricing starts at US $5.97 (1000-up).
An evaluation kit is available to speed designs.
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