9-15
9
Product Description
Ordering Information
Typical Applications
Features
Functional Block Diagram
RF Micro Devices, Inc.
7625 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
1
2
3
4
8
7
6
5
NC
RF IN
GND
RF OUT
NC
G10
VDD
NC
RF2421
10dB SWITCHED ATTENUATOR
• Power Control in Communication Systems
• CMOS Compatible Programmable
Attenuator
• Commercial and Consumer Systems
• Portable Battery-Powered Equipment
The RF2421 is a monolithic switched attenuator. The
device is built using a Gallium Arsenide process technol-
ogy and has a single step attenuation of 10dB. The input
and output of the device has a low VSWR 50
Ω match.
The RF output can drive up to +16dBm. This unit is
intended for use in systems that require RF power control
by digital means. No negative supply voltages are
required, and the current consumption is less than 5
µA
when the attenuator is off.
• Single 2.7V to 6V Supply
• 10dB Single Step Attenuation
• 1 dB Insertion Loss
• 1-bit Digitally Controlled Attenuation
• Digitally Controlled Power Down Mode
• 500MHz to 3000 MHz Operation
RF2421
10dB Switched Attenuator
RF2421 PCBA
Fully Assembled Evaluation Board
9
Rev A6 001102
0.244
0.229
0.157
0.150
0.018
0.014
0.050
0.068
0.053
NOTES:
1. Shaded lead is Pin 1.
2. All dimensions are excluding
mold flash.
3. Lead coplanarity -
0.005 with respect to datum "A".
Dimensions in mm
0.196
0.189
0.008
0.004
-A-
8° MAX
0° MIN
0.034
0.016
0.009
0.007
Package Style: SOIC-8
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