MAX2269 查看數據表（PDF） - Maxim Integrated

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MAX2269

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

Maxim Integrated 

19-1567; Rev 1; 2/01

EVAALVUAAILTAIOBNLEKIT

+2.7V, Single-Supply, Cellular-Band

Linear Power Amplifiers

General Description

The MAX2267/MAX2268/MAX2269 power amplifiers are

optimized for IS-98-based CDMA and PDC cellular tele-

phones operating in the Japanese cellular-frequency

band. When matched for CDMA operation, the ampli-

fiers achieve 27dBm output power with 35% efficiency

(MAX2268), with margin over the adjacent and alternate

channel specification. At a +17dBm output—a very

common power level for CDMA phones—the MAX2268

still has 7% efficiency, yielding excellent overall talk

time. At the same power level, the MAX2267/MAX2269

have an unprecedented 12%/17% efficiency, while still

obtaining 28%/29% efficiency at maximum output

power.

The MAX2267/MAX2268/MAX2269 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 MAX2267/MAX2268/MAX2269 have excel-

lent gain stability over temperature (±0.8dB), so over-

design 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

+4.5V while meeting all ACPR specifications over the

entire temperature range.

The devices are packaged in a 16-pin TSSOP with

exposed paddle (EP). For module or direct chip attach

applications, the MAX2267 is also available in die form.

Features

o Low Average CDMA Current Consumption in

Typical Urban Scenario

55mA (MAX2267)

90mA (MAX2268)

50mA (MAX2269)

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 +4.5V Single-Supply Operation

o 35% Efficiency at +2.7V Operation

Ordering Information

PART

TEMP. RANGE

PIN-

PACKAGE

MAX2267EUE

MAX2267E/D

MAX2268EUE

MAX2269EUE

-40°C to +85°C

-40°C to +85°C

-40°C to +85°C

-40°C to +85°C

16 TSSOP-EP

Dice*

16 TSSOP-EP

16 TSSOP-EP

TSSOP-EP

5mm x 6.4mm

*Contact factory for dice specifications.

Applications

Cellular-Band CDMA Phones

Cellular-Band PDC Phones

2-Way Pagers

Power-Amplifier Modules

DEVICE

MAX2267

MAX2268

MAX2269

Selector Guide

HIGH POWER-ADDED EFFICIENCY (%)

CDMA AT

+27dBm

CDMA AT

+17dBm

PDC AT

+29dBm

28

12

—

34

7

41

29

17

—

TOP VIEW

Pin Configurations/

Functional Diagrams

MAX2267/MAX2269

IN1 1

PWR 2

VCC 3

BIAS1H 4

VCC 5

SHDN 6

BIAS2L 7

OUT1 8

16 IN0

15 BIAS2H

14 VCC

13 GND

12 NFP

11 OUT0

10 BIAS1L

9 OUT1

TSSOP-EP

Pin Configurations continued at end of data sheet.

________________________________________________________________ Maxim Integrated Products 1

For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

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