MAX2242 Datasheet | Maxim Integrated

Description The MAX2242 low-voltage linear power amplifier (PA) is designed for 2.4GHz ISM-band wireless LAN applications. It delivers +22.5d Bm of linear output power with an adjacent-channel power ratio (ACPR) of <-33d Bc 1st-side lobe and <-55d Bc 2nd-side lobe, pliant with the IEEE 802.11b 11MB/s WLAN standard with at least 3d B 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 pact flash card form factors. The MAX2242 PA consists of a three-stage PA, power detector, and power management circuitry. The power detector provides over 20d B of dynamic range with ±0.8d B 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. o 2.4GHz to 2.5GHz Operating Range o +22.5d Bm Linear Output Power (ACPR of <-33d Bc 1st-Side Lobe and <-55dbc 2nd-Side Lobe) o 28.5d B Power Gain o On-Chip Power Detector o External Bias Control for Current Throttleback o +2.7V to +3.6V Single-Supply Operation o 0.5µA Shutdown Mode o Tiny Chip-Scale Package (1.5mm ✕ 2.0mm) Features Ordering Information PART MAX2242EBC-T TEMP RANGE -40°C to +85°C PINPACKAGE 3 ✕ 4 UCSP TOP MARK AAE Pin Configuration RF_IN C4 GND B4 VCC1 A4 ________________________Applications IEEE 802.11b DSSS Radios Wireless LANs Home RF 2.4GHz Cordless Phones 2.4GHz ISM Radios GND C3 VCCB BIAS CIRCUIT A3 SHDN C2 PD_OUT B2 A2 VCC2 Actual Size 1.5mm ✕ 2.0mm C1 B1 RF_OUT 3✕4...