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RF2138

2

Typical Applications

鈥?3V GSM Cellular Handsets

鈥?3V Dual-Band/Triple-Band Handsets

鈥?Commercial and Consumer Systems

鈥?Portable Battery-Powered Equipment

鈥?GPRS Compatible

3V GSM POWER AMPLIFIER

2

POWER AMPLIFIERS

0.38

0.40

sq.

2.00

1.50

sq.

0.28 0.80

0.13

Tel (336) 664 1233

Fax (336) 664 0454

http://www.rfmd.com

Product Description

The RF2138 is a high power, high efficiency power ampli-

fier module offering high performance in GSM or GPRS

applications. The device is manufactured on an advanced

GaAs HBT process, and has been designed for use as

the final RF amplifier in GSM hand held-digital cellular

equipment and other applications in the 800MHz to

950MHz band. On-board power control provides over

70dB of control range with an analog voltage input, and

provides power down with a logic 鈥渓ow鈥?for standby opera-

tion. The device is self-contained with 50鈩?input and the

output can be easily matched to obtain optimum power

and efficiency characteristics. The RF2138 can be used

together with the RF2140 for dual-band operation. The

device is packaged in an ultra-small ceramic package,

minimizing the required board space.

Optimum Technology Matching廬 Applied

Si BJT

Si Bi-CMOS

3.50

3.35

sq.

1

1.50

1.20

ALL SOLDER PAD TOLERANCES P0.05mm

ro

du

ct

眉

GaAs HBT

SiGe HBT

VCC2

VCC2

GaAs MESFET

Si CMOS

Features

鈥?Single 2.7V to 4.8V Supply Voltage

鈥?+36dBm Output Power at 3.5V

鈥?32dB Gain with Analog Gain Control

鈥?58% Efficiency

鈥?800MHz to 950MHz Operation

鈥?Supports GSM and E-GSM

1

GND2

RF IN

GND1

2

3

4

5

16

15

U

pg

r

S

ee

6

APC1

7

APC2

ad

ed

14

13

12 RF OUT

11 RF OUT

10 RF OUT

9

NC

8

VCC

2F0

NC

NC

P

VCC1

Ordering Information

RF2138

RF2138 PCBA

3V GSM Power Amplifier

Fully Assembled Evaluation Board

Functional Block Diagram

RF Micro Devices, Inc.

7628 Thorndike Road

Greensboro, NC 27409, USA

Rev A9 011031

R

F2

17

4.20

sq.

3.95

Package Style: MP16K01A

3

2-119

next

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