MAX2840 Datasheet | Maxim Integrated

Data Sheet.in 19-2494; Rev 2; 8/03 KIT ATION EVALU E L B AVAILA 5GHz Linear Power Amplifiers General Description Features - 5GHz to 6GHz Operating Frequency Range - High Linear Output Power +15d Bm at 5.25GHz (MAX2840) +18d Bm at 5.25GHz (MAX2841) - 22d B Power Gain - On-Chip Detector With 15d B Dynamic Range and ±1.0d B Detector Accuracy - Simple Input and Output Matching - +2.7V to +3.6V Single Supply - Shutdown Mode With Less than 10µA Current - 2mm ✕ 1.5mm Chip-Scale Package MAX2840/MAX2841 The MAX2840/MAX2841 low-cost linear power amplifiers (PAs) operate in the 5GHz to 6GHz band. The PAs are designed for high gain and high linearity, which makes them ideal for use in IEEE 802.11a OFDM systems. The MAX2840 delivers +15d Bm output power, and the MAX2841 delivers +18d Bm output power. The devices integrate a power detector that provides over 15d B dynamic range and ±1.0d B accuracy. With the detector circuit built in, an automatic level control (ALC) function can be easily implemented. The PAs also feature an external bias control function. The idle current can be adjusted through an external DAC to improve efficiency at reduced output powers while maintaining sufficient ACPR and EVM performance. As a result, the highest possible efficiency is maintained at all power levels. The MAX2840/MAX2841 operate over a single +2.7V to +3.6V power-supply range. An on-chip shutdown feature reduces operating current to less than 10µA, eliminating the need for an external supply switch. The MAX2840/MAX2841 are packaged in a 2mm ✕ 1.5mm chip-scale package (UCSP™), which significantly minimizes parasitic effects and reduces the required board area. Ordering Information PART MAX2840EBC-T MAX2841EBC-T TEMP RANGE -40°C to +85°C -40°C to +85°C PINPACKAGE 3 ✕ 4 UCSP 3 ✕ 4 UCSP TOP MARK AAT AAU Typical Operating Circuit appears at end of data sheet. Applications IEEE 802.11a OFDM WLAN Hiper LAN2 WLAN 5GHz Cordless Phones SHDN A1 BIAS CIRCUIT BIAS C1 Pin Configuration Functional...