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RF2861

0

RoHS Compliant & Pb-Free Product

Typical Applications

鈥?CDMA/JCDMA Cellular Systems

鈥?CDMA450 Handsets/Data Cards

鈥?AMPS Cellular Systems

Product Description

-A-

CDMA LOW NOISE AMPLIFIER/MIXER

900MHz DOWNCONVERTER

鈥?General Purpose LNA and Downconverter

鈥?Commercial and Consumer Systems

鈥?Portable Battery-Powered Equipment

0.10 C A

0.05 C

3.00

2 PLCS

The RF2861 is a receiver front-end for CDMA cellular

applications, including JCDMA and CDMA450. It is

designed to amplify and downconvert RF signals, using a

three gain state LNA to obtain 17dB of stepped gain con-

trol. Features include digital control of LNA gain and

power down mode, along with an integrated TX LO buffer

amplifier. Another feature of the chip is adjustable IIP3 of

the LNA and mixer using off-chip current setting resistors

to allow for minimum DC current consumption. Noise fig-

ure, IIP3, and other specs are designed to be compatible

with the TIA/EIA 98D standard for CDMA cellular commu-

nications. The IC is manufactured on an advanced Silicon

Germanium Bi-CMOS process and is in a 3mmx3mm,

16-pin, QFN.

1.50 TYP

2 PLCS

0.90

0.85

0.70

0.65

0.10 C B

0.05

0.00

3.00

12擄

MAX

2 PLCS

0.10 C B

-B-

1.37 TYP

2 PLCS

-C-

Dimensions in mm.

SEATING

PLANE

2.75 SQ

0.60

0.24

TYP

0.10 C A

0.10 M C A B

0.30

0.18

2

NOTES:

1. Shaded lead is pin 1.

2

Dimension applies to plated terminal: to be measured

between 0.20 mm and 0.25 mm from terminal end.

PIN 1 ID

R.20

1.65

SQ.

1.35

0.50

0.30

0.50

Optimum Technology Matching廬 Applied

Si BJT

Si Bi-CMOS

InGaP/HBT

GaAs HBT

SiGe HBT

GaN HEMT

GaAs MESFET

Si CMOS

SiGe Bi-CMOS

Package Style: QFN, 16-Pin, 3x3

Features

鈥?3mmx3mm LNA/Mixer Solution

鈥?Adjustable LNA and Mixer Current/IIP3

TX BUFF

ENABLE

ENABLE

LO OUT

VCC

鈥?Meets IMD Tests with Three Gain

States/Two Logic Control Pins

12 LO IN

11 GND

10 IF OUT-

9 IF OUT+

16

G2 1

LNA IN 2

LNA EMITTER 3

LNA OUT 4

5

ISET2

15

14

13

鈥?Integrated TX LO Buffer Amplifier

鈥?Full ESD Protection on all Pins

Ordering Information

RF2861

RF2861PCBA-41X

CDMA Low Noise Amplifier/Mixer 900MHz

Downconverter

Fully Assembled Evaluation Board

Tel (336) 664 1233

Fax (336) 664 0454

http://www.rfmd.com

6

ISET1

7

G1

8

MIX IN

Functional Block Diagram

RF Micro Devices, Inc.

7628 Thorndike Road

Greensboro, NC 27409, USA

Rev A3 050902

8-1

next

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