General Description

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% effi-

ciency, yielding excellent overall talk time. At the same

power level, the MAX2264/MAX2266 have an unprece-

dented 12%/17% efficiency, while still obtaining

32%/32% efficiency at maximum output power.

The MAX2264/MAX2265/MAX2266 have internally refer-

enced bias ports that are normally terminated with sim-

ple 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 excel-

lent 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

Cellular-Band CDMA Dual-Mode Phones

Cellular-Band PDC Phones

Cellular-Band TDMA Dual-Mode Phones

Dual-Mode Phones

2-Way Pagers

Power-Amplifier Modules

Features

o Low Average CDMA Current Consumption in

Typical Urban Scenario

55mA (MAX2264)

90mA (MAX2265)

40mA (MAX2266)

o 0.5µA Shutdown Mode Eliminates External

Supply Switch

o ±0.8dB Gain Variation Over Temperature

o No External Reference or Logic Interface

Circuitry Needed

o Supply Current and ACPR Margin

Dynamically Adjustable

o +2.7V to +5V Single-Supply Operation

o 37% Efficiency at +2.7V Operation

PART

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.

For small orders, phone 1-800-835-8769.

2.7V, Single-Supply, Cellular-Band

Linear Power Amplifiers

________________________________________________________________ Maxim Integrated Products

1

TOP VIEW

MAX2264/MAX2266

IN1

IN0

BIAS2H

GND

NFP

OUT0

BIAS1L

OUT1

PWR

SHDN

BIAS1H

BIAS2L

OUT1

16

15

14

13

12

11

10

9

1

2

3

4

5

6

7

8

TSSOP-EP

19-1524; Rev 2; 11/99

EVALUATION

KIT MANUAL

FOLLOWS

DATA

SHEET

Pin Configurations

Ordering Information

Selector Guide

*Contact factory for dice specifications.

Pin Configurations continued at end of data sheet.

POWER-ADDED EFFICIENCY (%)

CDMA AT

+28dBm

CDMA AT

+16dBm

TDMA AT

+30dBm

—

42

7

12

32

37

MAX2265

MAX2264

DEVICE

16 TSSOP-EP

Dice*

16 TSSOP-EP

PIN-

PACKAGE

TEMP. RANGE

-40°C to +85°C

-40°C to +85°C

-40°C to +85°C

MAX2265EUE

MAX2264E/D

MAX2264EUE

16 TSSOP-EP

-40°C to +85°C

MAX2266EUE

—

17

32

MAX2266

TSSOP-EP

5mm x 6.4mm