APN2014 Datasheet PDF - Skyworks


www.Datasheet-PDF.com

APN2014
Skyworks

Part Number APN2014
Description 6 Bit 63 dB RF Digital Attenuator
Page 4 Pages

APN2014 datasheet pdf
View PDF for PC
APN2014 pdf
View PDF for Mobile


No Preview Available !

APPLICATION NOTE
APN2014: 6 Bit 63 dB RF Digital Attenuator
Solution 500–2000 MHz
High dynamic range systems often require an attenuator with a
very wide attenuation range. It is possible to achieve 63 dB
attenuation range by cascading two low cost digital attenuators,
AA101-80 and AA104-73. It is effectively impossible to achieve
such high attenuation range with a single package device.
AA101-80 is a 5-bit attenuator with a 1 dB least significant
bit (LSB). Full-scale attenuation for this attenuator is 31 dB.
AA104-73 is a 1-bit digital attenuator that produces 32 dB
attenuation. When these two attenuators are cascaded on a
standard FR4 printed circuit board, 63 dB total attenuation
range with 1 dB step size is produced within the frequency
range 500 MHz to 2 GHz.
VS V1
V5
R1
AA101-80
C1
V6 V7
AA104-73
C2
C3
R1: 10 k
C1, C3: 47 pF
C2: 12 pF
Figure 1. Block Diagram, 6 Bit Attenuator, 900 MHz
The AA104-73 offers unique design flexibility in a miniature
SOT-6 package. This part may be tuned for different center fre-
quencies by changing capacitors C2 and C3 (Table 1). Once the
proper capacitance value is chosen for the desired frequency, the
attenuation will cover a 150–200 MHz bandwidth. Performance
for various values of capacitance is shown in the AA104-73
data sheet.
The AA101-80 is a broadband device. Its attenuation will be flat
over the frequency range from 500 MHz to 2.5 GHz.
The cascade of AA104-73 and AA101-80 will exhibit a tuned
response. See data plots (Figure 3). The example shown is for an
operation at 900 MHz. This solution works with supply and con-
trol voltages of 3 to 5 V. The AA101-80 requires five lines of
control and the AA104-73 requires two lines of complementary
positive voltage, for a total of seven control lines. The truth table
is shown in Table 2.
RF Frequency (MHz)
900
1700
1800
1900
Bypass Capacitor Value
C2 (pF)
12
3.3
2.7
2.5
Table 1. Typical Capacitance for Desired RF Frequency
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
200623 Rev. B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • August 1, 2007
1



No Preview Available !

APPLICATION NOTE • APN2014
Cut Trace
Approx. 0.010 Wide,
And Install Capacitor
3 Places
C1, C2, C3
Resistor,
10 kR1
AA104-73
Connector,
SMA East Coast
Microwave
142-0701-851
2 Places
Test Board
P/N SK38760
Solder 22 AWG.
To Circuit Board
8 Places
AA101-80
Figure 2. Assembly Test Board
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
2 August 1, 2007 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • 200623 Rev. B



No Preview Available !

APPLICATION NOTE • APN2014
Typical Performance Data (0, 5 V) 900 MHz
0
-0.5
-1.0
-1.5
-2.0
-2.5
J1–J2
-3.0
-3.5
0.80
0.84 0.88 0.92 0.96
Frequency (GHz)
Insertion Loss vs. Frequency
1.00
2.00
1.80 16 dB
63 dB
1.60
32 dB 8 dB
1.40 2 dB 4 dB
1.20
Ins. Loss
1 dB
1.00
0.80
0.84 0.88 0.92 0.96
Frequency (GHz)
VSWR vs. Frequency
1.00
1.00
0.75
0.50 63 dB
0.25 8 dB
0 2 dB
16 dB 4 dB
-0.25 1 dB
-0.50
-0.75
32 dB
-1.00
0.80 0.84 0.88 0.92 0.96
Frequency (GHz)
1.00
Attenuation Accuracy
Figure 3
70
60
50
40
30
20
10
0
-10
-20
-30
0.80
63 dB
32 dB
8 dB 16 dB
4 dB
1 dB 2 dB
0.84 0.88 0.92 0.96
Frequency (GHz)
Attenuation Phase Accuracy
1.00
16 dB
8 dB
V1 V2
VHigh
VHigh
VHigh
VHigh
VHigh
VHigh
VHigh
VHigh
VHigh
0
0 VHigh
VHigh
VHigh
00
VHigh = +3 to +5 V (VS = VHigh ± 0.2 V).
4 dB
V3
VHigh
VHigh
VHigh
0
VHigh
VHigh
VHigh
0
2 dB
V4
VHigh
VHigh
0
VHigh
VHigh
VHigh
VHigh
0
1 dB
V5
VHigh
0
VHigh
VHigh
VHigh
VHigh
VHigh
0
V6
VHigh
VHigh
VHigh
VHigh
VHigh
VHigh
0
0
32 dB
V7
0
0
0
0
0
0
VHigh
VHigh
Table 2. Truth Table
Attenuation State
Insertion Loss
1 dB
2 dB
4 dB
8 dB
16 dB
32 dB
63 dB
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
200623 Rev. B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • August 1, 2007
3



No Preview Available !

APPLICATION NOTE • APN2014
Copyright © 2002, 2003, 2004, 2005, 2006, 2007, Skyworks Solutions, Inc. All Rights Reserved.
Information in this document is provided in connection with Skyworks Solutions, Inc. (“Skyworks”) products or services. These materials, including the information contained herein, are provided
by Skyworks as a service to its customers and may be used for informational purposes only by the customer. Skyworks assumes no responsibility for errors or omissions in these materials or the
information contained herein. Skyworks may change its documentation, products, services, specifications or product descriptions at any time, without notice. Skyworks makes no commitment to
update the materials or information and shall have no responsibility whatsoever for conflicts, incompatibilities, or other difficulties arising from any future changes.
No license, whether express, implied, by estoppel or otherwise, is granted to any intellectual property rights by this document. Skyworks assumes no liability for any materials, products or
information provided hereunder, including the sale, distribution, reproduction or use of Skyworks products, information or materials, except as may be provided in Skyworks Terms and
Conditions of Sale.
THE MATERIALS, PRODUCTS AND INFORMATION ARE PROVIDED “AS IS” WITHOUT WARRANTY OF ANY KIND, WHETHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, INCLUDING FITNESS FOR A
PARTICULAR PURPOSE OR USE, MERCHANTABILITY, PERFORMANCE, QUALITY OR NON-INFRINGEMENT OF ANY INTELLECTUAL PROPERTY RIGHT; ALL SUCH WARRANTIES ARE HEREBY EXPRESSLY
DISCLAIMED. SKYWORKS DOES NOT WARRANT THE ACCURACY OR COMPLETENESS OF THE INFORMATION, TEXT, GRAPHICS OR OTHER ITEMS CONTAINED WITHIN THESE MATERIALS. SKYWORKS
SHALL NOT BE LIABLE FOR ANY DAMAGES, INCLUDING BUT NOT LIMITED TO ANY SPECIAL, INDIRECT, INCIDENTAL, STATUTORY, OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION,
LOST REVENUES OR LOST PROFITS THAT MAY RESULT FROM THE USE OF THE MATERIALS OR INFORMATION, WHETHER OR NOT THE RECIPIENT OF MATERIALS HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
Skyworks products are not intended for use in medical, lifesaving or life-sustaining applications, or other equipment in which the failure of the Skyworks products could lead to personal injury,
death, physical or environmental damage. Skyworks customers using or selling Skyworks products for use in such applications do so at their own risk and agree to fully indemnify Skyworks for any
damages resulting from such improper use or sale.
Customers are responsible for their products and applications using Skyworks products, which may deviate from published specifications as a result of design defects, errors, or operation of
products outside of published parameters or design specifications. Customers should include design and operating safeguards to minimize these and other risks. Skyworks assumes no liability for
applications assistance, customer product design, or damage to any equipment resulting from the use of Skyworks products outside of stated published specifications or parameters.
Skyworks, the Skyworks symbol, and “Breakthrough Simplicity” are trademarks or registered trademarks of Skyworks Solutions, Inc., in the United States and other countries. Third-party brands and
names are for identification purposes only, and are the property of their respective owners. Additional information, including relevant terms and conditions, posted at www.skyworksinc.com, are
incorporated by reference.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
4 August 1, 2007 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • 200623 Rev. B




APN2014 datasheet pdf
Download PDF
APN2014 pdf
View PDF for Mobile


Similiar Datasheets : APN2014

Index :   0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z   

This is a individually operated, non profit site. If this site is good enough to show, please introduce this site to others.
Since 2010   ::   HOME   ::   Privacy Policy + Contact