MAX2265

2.7V, Single-Supply, Cellular-Band Linear Power Amplifiers

Industry's Best Overall Efficiency, Single-Supply, Dual-Mode CDMA Power Amplifier

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Overview

Low Average CDMA Current Consumption in Typical Urban Scenario
- 55mA (MAX2264)
- 90mA (MAX2265)
- 40mA (MAX2266)
0.5µA Shutdown Mode Eliminates External Supply Switch
±0.8dB Gain Variation Over Temperature
No External Reference or Logic Interface Circuitry Needed
Supply Current and ACPR Margin Dynamically Adjustable
+2.7V to +5V Single-Supply Operation
37% Efficiency at +2.7V Operation

The MAX2264/MAX2265/MAX2266 power amplifiers are designed for operation in IS-98-based CDMA, IS-136-based TDMA, and PDC cellular telephones operating in the 900MHz range. When matched for CDMA operation and biased with margin over the adjacent and alternate channel specification (-45dBc/-56dBc), the amplifiers achieve 28dBm output power with 37% efficiency (MAX2265). At +16dBm output-a very common power level for CDMA phones-the MAX2265 still has 7% efficiency, yielding excellent overall talk time. At the same power level, the MAX2264/MAX2266 have an unprecedented 12% /17% efficiency, while still obtaining 32% /32% efficiency at maximum output power.

The MAX2264/MAX2265/MAX2266 have internally referenced bias ports that are normally terminated with simple resistors. The bias ports allow customization of ACPR margin and gain. They can also be used to "throttle back" bias current when generating low power levels. The MAX2264/MAX2265/MAX2266 have excellent gain stability over temperature (±0.8dB), so overdesign of driver stages and excess driver current are dramatically reduced, further increasing the phone's talk time. The devices can be operated from +2.7V to +5V while meeting all ACPR specifications over the entire temperature range. Nonlinear efficiency is 48% when matched for linear operation, or 55% when matched for non-linear-only operation (MAX2265).

The devices are packaged in a 16-pin TSSOP with exposed pad (EP). For module or direct chip attach applications, the MAX2264 is also available in die form.

Applications

2-Way Pagers
Cellular-Band CDMA Dual Mode™ Phones
Cellular-Band TDMA Dual Mode™ Phones
Dual-Mode Phones
PDC
Power-Amplifier Modules

Documentation

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Low-Noise Amplifiers (LNAs) & Power Amplifiers 1
MAX2320		Adjustable, High-Linearity, SiGe, Dual-Band, LNA/Mixer ICs
RF Mixers 2
MAX2323		Triple/Dual-Mode CDMA LNA/Mixers
MAX2325		Triple/Dual-Mode CDMA LNA/Mixers

Evaluation Kits

Evaluation Kit for the MAX2264, MAX2265, MAX2266

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Features and Benefits

Easy Evaluation of MAX2264/MAX2265/MAX2266
+2.7V to +5V Single-Supply Operation
RF Input/Output Matched for 824MHz to 849MHz Operation
All Matching Components Included

Product Details

The MAX2264/MAX2265/MAX2266 evaluation kits (EV kits) simplify evaluation of the MAX2264/MAX2265/MAX2266 power amplifiers (PAs), which are designed for operation in IS-98-based CDMA, IS-136-based TDMA, and PDC cellular phones operating in the 900MHz range. The kits enable testing of the devices' RF performance and require no additional support circuitry. The EV kits' signal inputs and outputs use SMA connectors to facilitate the connection of RF test equipment.

Each kit is assembled with either the MAX2264, MAX2265 or MAX2266 and incorporates input and output matching components optimized for the 824MHz to 849MHz RF frequency band. These EV kits are capable of operating at RF frequencies from 750MHz to 1000MHz with the appropriate matching components.

Applications