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DATA SHEET
AA110-85, AA110-85LF: GaAs IC 5-Bit Digital Attenuator with Driver 1 dB LSB Positive Control DC-2 GHz
Features
G G G G G
Functional Block Diagram
VSS VDD J2
G
Parallel Driver
Attenuation 1 dB steps to 31 dB with high accuracy Single positive control (3 V or 5 V) for each bit Low DC power consumption CMOS integrated silicon driver Designed for use at IF frequencies at input power levels > -10 dBm Available lead (Pb)-free and RoHS-compliant MSL-1 @ 260 C per JEDEC J-STD-020
CTL16
16 dB
CTL8
8 dB
CTL4
4 dB
Description
The AA110-85 is a 5-bit, single positive control GaAs IC FET digital attenuator with driver. It is particularly suited at IF frequencies where high attenuation accuracy, low insertion loss and low intermodulation products are required. Typical applications include base station, wireless data, broadband and wireless local loop gain control circuits. For low-power applications (< -10 dBm) see part number AA117-85.
CTL2
2 dB
CTL1
1 dB
C1
C2
J1
NEW
Skyworks offers lead (Pb)-free, RoHS (Restriction of Hazardous Substances)-compliant packaging.
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
200205 Rev. B * Skyworks Proprietary Information * Products and Product Information are Subject to Change Without Notice. * April 30, 2007
1
DATA SHEET * AA110-85, AA110-85LF
Electrical Specifications at -40 C to +85 C (VCC = 5 V)
Parameter(1) Insertion loss(2) Condition Frequency DC-0.5 GHz DC-1.0 GHz DC-2.0 GHz DC-0.5 GHz DC-1.0 GHz DC-2.0 GHz VSWR (I/O)(4) Switching characteristics Rise, fall On, off Video feedthru Input power for 1 dB compression Intermodulation intercept point (IP3) Thermal resistance Supply voltage Control voltages VCC = 5 V @ 750 A typ., 1 A max. CTL1, CTL2, CTL4, CTL8, CTL16, low = 0 to 0.8 V @ 20 A typ. CTL1, CTL2, CTL4, CTL8, CTL16, high = 3 to 5 V @ 20 A typ. 10/90% or 90/10% RF) 50% CTL to 90/10% RF) TRISE = 1 ns, BW = 500 MHz VCC = 5 V For two-tone input power 5 dBm VCC = 5 V 0.5-2.0 GHz 0.05 GHz 0.5-2.0 GHz 0.05 GHz 22 16 40 28 DC-2.0 GHz Min. Typ. 1.4 1.7 2.2 31 (0.2 + 2% of Attenuation Setting in dB) (0.25 + 3% of Attenuation Setting in dB) (0.4 + 6% of Attenuation Setting in dB) 1.5:1 15 50 50 27 20 46 34 85 1.8:1 ns ns mV dBm dBm dBm dBm C/W Max. 1.7 2.1 2.6 Unit dB dB dB dB dB dB dB
Attenuation range Attenuation accuracy(3)
1. All measurements made in a 50 system, unless otherwise specified. 2. Insertion loss changes by 0.003 dB/C. 3. Attenuation referenced to insertion loss. 4. Input/output.
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com 2
April 30, 2007 * Skyworks Proprietary Information * Products and Product Information are Subject to Change Without Notice. * 200205 Rev. B
DATA SHEET * AA110-85, AA110-85LF
Typical Performance Data (VCC = 5 V, ZO = 50 )
-0.5 -0.7 -0.9 1.5 1.4 -40 C 85 C 25 C 4 dB 16 dB 8 dB 1.6
Insertion Loss (dB)
-1.1 -1.3 -1.5 -1.7 -1.9 -2.1 -2.3 -2.5 0 0.5 1.0 1.5 2.0
VSWR
1.3 1.2 2 dB 1.1 1.0 0 0.5 31 dB 1.0 1.5 2.0 Ins. Loss 1 dB
Frequency (GHz)
Frequency (GHz)
Insertion Loss vs. Frequency
40 38 25 C 36 1.4 1.6 1.5
VSWR vs. Frequency (25 C)
8 dB
16 dB
IP3 (dBm)
34 32 30 85 C 28 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30
VSWR
1.3 2 dB 1.2 Ins. Loss 1 dB 31 dB 1.0 0 0.5 1.0 1.5 2.0 4 dB
-40 C
1.1
Atenuation (dB)
Frequency (GHz)
IP3 vs. Attenuation and Temperature, Main Bits (50 MHz) VSS = 5 V
VSWR vs. Frequency (85 C)
Compression Point vs. Attenuation, Voltage, and Temperature
Attenuation State Ins. loss 1 dB 2 dB 4 dB 8 dB 16 dB 31 dB
Frequency = 50 MHz.
1.6 1.5 16 dB 1.4 4 dB 1.3 1.2 1.1 1.0 0 0.5 1.0 1.5 2.0 1 dB Ins. Loss 8 dB 2 dB 31 dB
5 5 5 5 5 5
18.1 19.3 16.9 21.3 18.6 21.4
18.2 19.5 16.9 21.6 17.8 21.1
17.8 19.2 16.8 22.4 18.5 21.3
VSWR
Control Voltage (V) 5
Input Power @ 1 dB Compression 25 C (dBm) 85 C (dBm) -40 C (dBm) 17.2 17.3 19.9
Frequency (GHz)
VSWR vs. Frequency (-40 C)
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
200205 Rev. B * Skyworks Proprietary Information * Products and Product Information are Subject to Change Without Notice. * April 30, 2007
3
DATA SHEET * AA110-85, AA110-85LF
1.0
60 8 dB 16 dB 4 dB 50
Deviation from Nominal Attenuation (dB)
Deviation from Nominal Insertion Phase (Deg.)
0.5 0 1 dB -0.5 -1.0 -1.5 0 0.5
40 30
31 dB 16 dB
2 dB
20 10 0 -10 1 dB 0 0.5 1.0 2 dB 1.5 8 dB
31 dB
4 dB 2.0
1.0
1.5
2.0
Frequency (GHz)
Frequency (GHz)
Attenuation Accuracy vs. Frequency (25 C)
Attenuation Phase Accuracy vs. Frequency (25 C)
1.0
60 8 dB 16 dB 4 dB 50
Deviation from Nominal Attenuation (dB)
Deviation from Nominal Insertion Phase (Deg.)
0.5 0
31 dB 40 30 20 8 dB 10 0 1 dB 2 dB 1.5 -10 4 dB 2.0 16 dB
1 dB -0.5 -1.0 -1.5 0 0.5 1.0
2 dB
31 dB
1.5
2.0
0
0.5
1.0
Frequency (GHz)
Frequency (GHz)
Attenuation Accuracy vs. Frequency (85 C)
Attenuation Phase Accuracy vs. Frequency (85 C)
60
1.0
Deviation from Nominal Attenuation (dB)
Deviation from Nominal Insertion Phase (Deg.)
0.5 0
16 dB
8 dB
50 40 30 16 dB 20 10 0 1 dB 2 dB 1.0 1.5 4dB 2.0 -10 8 dB 31 dB
1 dB -0.5 -1.0
4 dB
2 dB
31 dB -1.5 0 0.5 1.0 1.5 2.0
0
0.5
Frequency (GHz)
Frequency (GHz)
Attenuation Accuracy vs. Frequency (-40 C)
Attenuation Phase Accuracy vs. Frequency (-40 C)
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com 4
April 30, 2007 * Skyworks Proprietary Information * Products and Product Information are Subject to Change Without Notice. * 200205 Rev. B
DATA SHEET * AA110-85, AA110-85LF
Typical Performance Data (VCC = 3 V, ZO = 50 )
-0.5 -0.7 -0.9 1.0
Deviation from Nominal Attenuation (dB)
0.5 0
8 dB
16 dB
4 dB
Insertion Loss (dB)
-1.1 -1.3 -1.5 -1.7 -1.9 -2.1 -2.3 -2.5 0 0.5
Ins. Loss -40 C
1 dB -0.5 -1.0 -1.5
2 dB
85 C
31 dB
1.0
1.5
2.0
0
0.5
1.0
1.5
2.0
Frequency (GHz)
Frequency (GHz)
Insertion Loss vs. Frequency
Attenuation Accuracy vs. Frequency (25 C)
1.6 1.5 4 dB 1.4 16 dB 8 dB 1.2 Ins. Loss 1.1 2 dB 1.0 0 0.5 31 dB 1.0 1.5 2.0 1 dB
1.0
Deviation from Nominal Attenuation (dB)
0.5 0
8 dB
16 dB
4 dB
VSWR
1.3
1 dB -0.5 -1.0
2 dB
31 dB -1.5 0 0.5 1.0 1.5 2.0
Frequency (GHz)
Frequency (GHz)
VSWR vs. Frequency (25 C)
Attenuation Accuracy vs. Frequency (85 C)
60
1.0
Deviation from Nominal Attenuation (dB)
50
Deviation from Nominal Insertion Phase (Deg.)
40 30 20
31 dB
0.5 0 1 dB -0.5 -1.0
8 dB
16 dB 4 dB 2 dB
16 dB 8 dB
10 0 1 dB -10 0 0.5 1.0 1.5 2.0 2 dB 4 dB
31 dB -1.5 0 0.5 1.0 1.5 2.0
Frequency (GHz)
Frequency (GHz)
Attenuation Phase Accuracy vs. Frequency (25 C)
Attenuation Accuracy vs. Frequency (-40 C)
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
200205 Rev. B * Skyworks Proprietary Information * Products and Product Information are Subject to Change Without Notice. * April 30, 2007
5
DATA SHEET * AA110-85, AA110-85LF
Compression Point vs. Attenuation, Voltage, and Temperature
Attenuation State Ins. Loss 1 dB 2 dB 4 dB 8 dB 16 dB 31 dB
Frequency = 50 MHz.
Absolute Maximum Ratings
Characteristic RF input power Supply voltage Control voltage(1) Value 2 W > 500 MHz, 0/6 V 0.5 W > 50 MHz, 0/6 V 6V -0.2 V, +6 V -40 C to +85 C -65 C to +150 C
Control Voltage (V) 3 3 3 3 3 3 3
Input Power @ 1 dB Compression 25 C (dBm) 85 C (dBm) -40 C (dBm) 16.6 16.6 16.5 17.5 18.9 16.3 20.6 15.5 20.2 17.5 19 16.6 21.1 15.1 19.9 17.5 18.8 16.3 21.8 16.2 20.1
Operating temperature Storage temperature
1. Control voltage must not exceed supply voltage. Performance is guaranteed only under the conditions listed in the specifications table and is not guaranteed under the full range(s) described by the Absolute Maximum specifications. Exceeding any of the absolute maximum/minimum specifications may result in permanent damage to the device and will void the warranty.
Truth Table
CTL1 0 1 0 0 0 0 1 CTL2 0 0 1 0 0 0 1 CTL4 0 0 0 1 0 0 1 CTL8 0 0 0 0 1 0 1 CTL16 0 0 0 0 0 1 1 Attenuation J1-J2 Ins. loss 1 dB 2 dB 4 dB 8 dB 16 dB 31 dB
CAUTION: Although this device is designed to be as robust as possible, ESD (Electrostatic Discharge) can damage this device. This device must be protected at all times from ESD. Static charges may easily produce potentials of several kilovolts on the human body or equipment, which can discharge without detection. Industry-standard ESD precautions must be employed at all times.
Recommended Solder Reflow Profiles
Refer to the "Recommended Solder Reflow Profile" Application Note.
"0" = 0 to 0.8 V (VCC = 5 V). "1" = 3 to 5 V (VCC = 5 V).
Application Information
The control FETs that switch fixed attenuator sections into or out of the main signal path in AA110-85 require negative source voltage (VCC) for proper operation. The AA110-85 includes an internal negative voltage generator with a charge pump. The charge pump oscillator operates at approximately 600 kHz. This signal and its harmonics can couple into the RF signal path, which can degrade signal to noise ratio for frequencies less than approximately 200 MHz. The signal to noise ratio for operation at frequencies above approximately 200 MHz is not affected. For applications where the input signal amplitude is less than -10 dBm and its frequency is less than approximately 200 MHz, the AA117-85 is recommended. This part is identical to AA110-85, but with the internal negative voltage generator circuit disabled. Consequently, an external negative voltage source is required for proper operation. Please refer to the data sheet for AA117-85, available at www.skyworksinc.com.
Tape and Reel Information
Refer to the "Discrete Devices and IC Switch/Attenuators Tape and Reel Package Orientation" Application Note.
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com 6
April 30, 2007 * Skyworks Proprietary Information * Products and Product Information are Subject to Change Without Notice. * 200205 Rev. B
DATA SHEET * AA110-85, AA110-85LF
Pin Descriptions
Pin Number 1, 10 2, 3, 4, 5, 6, 7, 8, 9 11 12, 13 Pin Name J1, J2 GND Description RF Input/Output - RF input/output port. Equipotential Point - Internal circuit common, which must be connected to the PCB ground or common via the lowest possible impedance. Positive supply voltage input - Must be bypassed to commmon via a 0.01 F, or larger, capacitor. Charge Pump Capacitor - Capacitor that accumulates charge to produce negative voltage supply. This capacitor is 0.025 F, nominal. Source Voltage Input - Filter terminal for negative supply voltage. Must be bypassed to commmon via a 0.01 F, or larger, capacitor. Control Voltage 16 - High impedance control voltage input. The logic level voltage applied to this pin determines whether the 16 dB bit (MSB) is switched into the main signal path or is bypassed. Control Voltage 8 - High impedance control voltage input. The logic level voltage applied to this pin determines whether the 8 dB bit is switched into the main signal path or is bypassed. Control Voltage 4 - High impedance control voltage input. The logic level voltage applied to this pin determines whether the 4 dB bit is switched into the main signal path or is bypassed. Control Voltage 2 - High impedance control voltage input. The logic level voltage applied to this pin determines whether the 2 dB bit is switched into the main signal path or is bypassed. Control Voltage 1 - High impedance control voltage input. The logic level voltage applied to this pin determines whether the 1 dB bit (LSB) is switched into the main signal path or is bypassed. No internal connection.
Pin Out
J1 GND GND GND GND GND GND GND GND J2
1 dB 2 dB DRIVER 4 dB
6
N/C CTL1
CTL2 CTL4 CTL8 Negative Supply CTL16 Capacitor = 0.01 F
20
1 2 3 4 5
19 18 17 16 15
VCC C1, C2
8 dB 16 dB
VSS C2 C1 VCC
14
7 8 9 10
13 12 11
Charge Pump Capacitor = 0.025 F
14
VCC
Positive Supply Capacitor = 0.01 F
15
CTL16
SSOP-20
Pin 20 0.209 (5.30 mm) 0.012 (0.30 mm) 0.307 (7.80 mm) 0.016 (0.307 mm)
16
CTL8
Pin 1 Indicator Pin 1
17
CTL4
0.283 (7.20 mm) 0.012 (0.30 mm) 0.078 (2.00 mm) Max.
18
CTL2
0.069 (1.75 mm) 0.004 (0.10 mm)
0.0256 (0.65 mm) BSC
0.010 (0.25 mm) 0.004 (0.090 mm) 8 Max.
0.012 (0.30 mm) Ref.
0.008 (0.20 mm) Max. 0.002 (0.05 mm) Min.
0.030 (0.75 mm) 0.008 (0.10 mm)
19
CTL1
20
N/C
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
200205 Rev. B * Skyworks Proprietary Information * Products and Product Information are Subject to Change Without Notice. * April 30, 2007
7
DATA SHEET * AA110-85, AA110-85LF
Copyright (c) 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 8
April 30, 2007 * Skyworks Proprietary Information * Products and Product Information are Subject to Change Without Notice. * 200205 Rev. B

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