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当前位置：MAXIM MAX2830 - Industry's First Ultra-Low-Power, 802.11g/b RF Transceiver to Integrate PA, Rx/Tx/Antenna Diversity Switches
发布时间：2007-08-22 浏览：4282次
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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 transceiver operates from a 2.7V to 3.6V supply, and the PA operates from 2.7V to 4.2V, which allows the MAX2830 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, 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 20µA low-power shutdown mode is available to further save power.
The MAX2830 is available in a small, 7mm x 7mm, leadless 48-pin TQFN-EP package. Pricing starts at $5.97 (1000-up, FOB USA). An evaluation kit is available to speed designs.
