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RF2475

DUAL-BAND LOW NOISE AMPLIFIER/MIXER WITH FREQUENCY DOUBLER

RF Micro Devices 

Preliminary

8

RF2475

DUAL-BAND LOW NOISE AMPLIFIER/MIXER

WITH FREQUENCY DOUBLER

Typical Applications

• TDMA Handsets

Product Description

1.00

0.85

0.80

The RF2475 includes two downconverting mixers and

0.65

5.00

sq.

2.50

Typ.

associated LNAs. It is designed for IS136 handset appli-

Typ

0.60

0.24

0.65

0.30

cations in the cellular 800MHz and PCS 1900MHz

4 PLCS

bands. Each LNA has a gain bypass mode, which is con-

2 0.30

trolled by the gain select pin. The device internally ties the

0.18

2.85 sq.

2.55

two mixer outputs together, providing interface to a single

IF SAW filter. A frequency doubler is provided to supply

the LO signal to the PCS mixer and feeds the PCS trans-

mit LO output buffer. A cellular LO output buffer is also

included. The device is fabricated using Gallium Arsenide

HBT technology and is packaged in a 28-pin, 5mmx5mm

12°

MAX

0.75

0.50

0.05

0.01

NOTES:

1 Shaded Pin is Lead 1.

0.50

0.23

0.13

4 PLCS

8

leadless package.

2 Dimension applies to plated terminal: to be measured between 0.02 mm

and 0.25 mm from terminal end.

3 Pin 1 identifier must exist on top surface of package by identification

mark or feature on the package body. Exact shape and size is optional.

4 Package Warpage: 0.05 mm max.

5 Die Thickness Allowable: 0.305 mm max.

Optimum Technology Matching® Applied

Si BJT

üGaAs HBT

GaAs MESFET

Si Bi-CMOS

SiGe

28

27

26

25

24

23

22

LNA VCC19 1

21 LO IN8

GND 2

20 GND

LNA IN19 3

X2

19 IF A

GND 4

18 IF B

LNA IN8 5

17 GND

GND 6

16 VCC DOUBLER

GAIN SEL 7

8

15 VCC TX19

9

10

11

12

13

14

Package Style: LCC, 28-Pin, 5x5

Features

• Complete Dual-Band Receiver Front-End

• Stepped LNA Gain Control

• Integrated LO Frequency Doubler

• Integrated LO Output Buffers

• Meets IS136 Specifications

Ordering Information

RF2475

RF2475 PCBA

Dual-Band Low Noise Amplifier/Mixer with Fre-

quency Doubler

Fully Assembled Evaluation Board

Functional Block Diagram

RF Micro Devices, Inc.

7628 Thorndike Road

Greensboro, NC 27409, USA

Tel (336) 664 1233

Fax (336) 664 0454

http://www.rfmd.com

Rev A2 010918

8-89

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