The MAX2601/MAX2602 are RF power transistors optimized for use in portable cellular and wireless equipment that operates from three NiCd/NiMH cells or one Li-Ion cell. These transistors deliver 1W of RF power from a 3.6V supply with efficiency of 58% when biased for constant-envelope applications (e.g., FM or FSK). For NADC (IS-54) operation, they deliver 29dBm with -28dBc ACPR from a 4.8V supply. The MAX2601 is a high-performance silicon bipolar RF power transistor. The MAX2602 includes a high-performance silicon bipolar RF power transistor, and a biasing diode that matches the thermal and process characteristics of the power transistor. This diode is used to create a bias network that accurately controls the power transistor’s collector current as the temperature changes. The MAX2601/MAX2602 can be used as the final stage in a discrete or module power amplifier. Silicon bipolar technology eliminates the need for voltage inverters and sequencing circuitry, as required by GaAsFET power amplifiers. Furthermore, a drain switch is not required to turn off the MAX2601/MAX2602. This increases operating time in two ways: it allows lower system end-of-life battery voltage, and it eliminates the wasted power from a drain-switch device. The MAX2601/MAX2602 are available in thermally enhanced, 8-pin SO packages, which are screened to the extended temperature range (-40°C to +85°C). Applications * 915MHz ISM Transmitters * AMPS Cellular Phones * CDPD Modems * Digital Cellular Phones * Land Mobile Radios * Microcellular GSM (Power Class 5) * Narrow-Band PCS (NPCS) * Two-Way Paging * Low Voltage: Operates from 1 Li-Ion or 3 NiCd/NiMH Batteries * DC-to-Microwave Operating Range * 1W Output Power at 900MHz * On-Chip Diode for Accurate Biasing (MAX2602) * Low-Cost Silicon Bipolar Technology * Does Not Require Negative Bias or Supply Switch * High Efficiency: 58% https://elecena.pl/product/22322313/3-6v-1w-rf-power-transistors-for-900mhz-applications 2022-12-27 https://elecena.pl/product/22322313/3-6v-1w-rf-power-transistors-for-900mhz-applications 2024-11-04 https://elecena.pl/product/22322313/3-6v-1w-rf-power-transistors-for-900mhz-applications 2024-11-09 https://elecena.pl/product/22322313/3-6v-1w-rf-power-transistors-for-900mhz-applications 2025-01-19