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Preliminary
Product Description
Ordering Information
Typical Applications
Features
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
Optimum Technology Matching® Applied
Si BJT
GaAs MESFET
GaAs HBT
Si Bi-CMOS
SiGe HBT
Si CMOS
VCC1
VCC2
VREG
GND
GND
GND
10
11
12
1
3
2
6
5
4
9
8
7
RF2681
W-CDMA LINEAR VARIABLE GAIN
DRIVER AMPLIFIER
• PA Driver Amplifier for W-CDMA Handsets
• General Purpose Driver Amplifier
The RF2681 is a linear variable gain amplifier specifically
designed for PA driver applications in W-CDMA handsets.
The device maintains excellent linearity over a 30dB gain
control range, while providing a maximum of 26 dB gain.
The IC is manufactured on an advanced Gallium Ars-
enide Heterojunction Bipolar Transistor Process and is
provided in an extremely small 3mmx3 mm, 12-pin, lead-
less chip carrier.
• 30dB Linear Gain Control Range
•26dB Maximum Gain
• Single 2.7V to 3.3V Supply
• High Linearity Over Entire Gain Control
Range
• 9dBm Output Drive Available
RF2681
W-CDMA Linear Variable Gain Driver Amplifier
RF2681 PCBA
Fully Assembled Evaluation Board
4
Rev A1 010824
Dimensions in mm.
12°
max
1.00
0.85
3.00
sq.
1.25
0.95
sq.
2
0.30
0.18
0.50
0.23
0.13
4PLCS
0.80
0.65
NOTES:
Shaded Pin is Lead 1.
1
Dimension applies to plated terminal and is measured between 0.02 mm and
0.25 mm from terminal end.
2
5
Die thickness allowable: 0.305 mm max.
Package Warpage: 0.05 mm max.
4
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.
3
0.65
0.30
4PLCS
0.60
0.24 typ
0.75
0.50
0.05
0.01
Package Style: LCC, 12-Pin, 3x3
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