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________________General Description

The MAX2430 is a versatile, silicon RF power amplifier

that operates directly from a 3V to 5.5V supply, making

it suitable for 3-cell NiCd or 1-cell lithium-ion battery

applications. It is designed for use in the 800MHz to

1000MHz frequency range and, at 915MHz, can pro-

duce +21dBm (125mW) of output power with greater

A unique shutdown function provides an off supply cur-

rent of typically less than 1µA to save power during

“idle slots” in time-division multiple-access (TDMA)

transmissions. An external capacitor sets the RF output

power envelope ramp time. External power control is

also possible over a 15dB range. The amplifier’s input

is matched on-chip to 50

Ω. The output is an open col-

lector that is easily matched to a 50

Ω load with few

external components.

The MAX2430 is ideal as a driver amplifier for portable

and mobile telephone systems, or as a complete power

amplifier for other low-cost applications, such as those

in the 915MHz spread-spectrum ISM band. It is fabri-

cated with Maxim’s high-frequency bipolar transistor

process and is available in a thermally enhanced,

16-pin narrow SO and miniature 16-pin PwrQSOP pack-

ages with heat slug.

________________________Applications

Digital Cordless Phones

915MHz ISM-Band Applications

Two-Way Pagers

Wireless LANs

Cellular Phones

AM and FM Analog Transmitters

____________________________Features

o Operates Over the 800MHz to 1000MHz Frequency

Range

o Delivers 125mW at 915MHz from +3.6V Supply

(100mW typical from +3.0V supply)

o Operates Directly from 3-Cell NiCd or 1-Cell

Lithium-Ion Battery

o Over 32dB Power Gain

o RF Power Envelope Ramping is Programmable

with One External Capacitor

o Input Matched to 50

Ω (VSWR < 2:1)

o 15dB Output Power Control Range

o 1µA Typical Shutdown Current

Low-Voltage, Silicon RF Power

Amplifier/Predriver

________________________________________________________________

Maxim Integrated Products

1

16

15

14

13

12

11

10

9

1

2

3

4

5

6

7

8

GND3

GND3

GND4

GND4

GND4

GND4

BIAS

RFOUT

GND3

SHDN

GND2

RFIN

GND2

GND1

VCC1

VCC2

TOP VIEW

MAX2430

Narrow SO/PwrQSOP

Pin Configuration

MAX2430

MASTER

BIAS

GAIN

GND2

NOTE: MAX2430IEE (PwrQSOP PACKAGE) UNDERSIDE METAL

SLUG MUST BE SOLDERED TO PCB GROUND PLANE.

GND3

VCC1

VCC2

BIAS

GND4

RFOUT

9

10

8

7

11, 12, 13, 14

1, 15, 16

3, 5

SHDN

GND1

RFIN

2

6

4

DRIVER

OUTPUT

BIAS

Functional Diagram

19-1093; Rev 2; 1/98

PART

TEMP. RANGE

PIN-PACKAGE

EVALUATION

KIT

MANUAL

FOLLOWS

DATA

SHEET

Ordering Information

MAX2430IEE

-20°C to +85°C

16 PwrQSOP

MAX2430ISE

-20°C to +85°C

16 Narrow SO