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MAX2242：2.4GHz至2.5GHz线性功率放大器

2.4GHz PA，可提供+23dBm线性输出功率

The MAX2242 low-voltage linear power amplifier (PA) is designed for 2.4GHz ISM-band wireless LAN applications. It delivers +22.5dBm of linear output power with an adjacent-channel power ratio (ACPR) of <-33dBc 1st-side lobe and <-55dBc 2nd-side lobe, compliant with the IEEE® 802.11b 11MB/s WLAN standard with at least 3dB margin. The PA is packaged in the tiny 3x4 chip-scale package (UCSP™), measuring only 1.5mm x 2.0mm, ideal for radios built in small PC card and compact flash card form factors. The MAX2242 PA consists of a three-stage PA, power detector, and power management circuitry. The power detector provides over 20dB of dynamic range with ±0.8dB accuracy at the highest output power level. An accurate automatic level control (ALC) function can be easily implemented using this detector circuit. The PA also features an external bias control pin. Through the use of an external DAC, the current can be throttled back at lower output power levels while maintaining sufficient ACPR performance. As a result, the highest possible efficiency is maintained at all power levels. The device operates over a single +2.7V to +3.6V power-supply range. An on-chip shutdown feature reduces operating current to 0.5µA, eliminating the need for an external supply switch.

关键特性 2.4GHz to 2.5GHz Operating Range +22.5dBm Linear Output Power (ACPR of <-33dBc 1st-Side Lobe and <-55dbc 2nd-Side Lobe) 28.5dB Power Gain On-Chip Power Detector External Bias Control for Current Throttleback +2.7V to +3.6V Single-Supply Operation 0.5µA Shutdown Mode Tiny Chip-Scale Package (1.5mm x 2.0mm)

MAX2242：典型应用电路 应用 2.4GHz无绳电话 2.4GHz ISM无线装置 HomeRF IEEE 802.11b DSSS无线装置 无线局域网(WLAN)

数据手册DataSheet

关键参数

开发工具

• MAX2242EVKIT

质量和环境数据

• MAX2242.pdf

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