North America Tel: 800.366.2266 / Fax: 978.366.2266
Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300
Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298
Visit www.macomtech.com for additional data sheets and prod uct information.
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
changes to the product(s) or information contained herein without notice.
1
Digital Attenuator, 5-Bit, Single Control
15.5 dB, 2.0 - 6.0 GHz
Rev. V1
MAADSS0018
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions
is considering for development. Performance is based on target specifications, simulated results,
and/or prototype measurements. Commitment to develop is not guaranteed.
PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology
Solutions has under development. Performance is based on engineering tests. Specifications are
typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available.
Commitment to produce in volume is not guaranteed.
Features
Integrated Logic
Positive Single Control
Insertion Loss: 2.0 dB @ 3.4 GHz
IP3: >42 dBm typical @ 2.0 GHz
Attenuation Accuracy: 0.3 dB + 3% @ 3.4 GHz
0.5 dB Attenuation Steps to 15.5 dB
Lead-Free 3 mm 16-Lead PQFN Package
Halogen-Free “Green” Mold Compound
RoHS* Compliant and 26 C Re-flow Compatible
Description
M/A-COM’s MAADSS0018 is a 5-bit, 0.5-dB step
GaAs MMIC digital attenuator in a lead-free 3mm 16
lead PQFN surface mount plastic package. The
MAADSS0018 is ideally suited for use where high
accuracy, very low power consumption and low
intermodulation products are required. Typical
applications include radio, cellular, wireless LANs,
GPS equipment and other gain / level control
circuits.
The MAADSS0018 is part of a digital attenuator
family. This family includes 4, 5 and 6 bit attenuators
with 0.5, 1 or 2 dB steps and up to 31.5 range.
Functional Schematic 3
3. Blocking capacitors are required on all RF ports
Pin Configuration
* Restrictions on Hazardous Substances, European Union Directive 2002/95/EC.
Ordering Information 1,2
Part Number Package
MAADSS0018TR-3000 3000 piece reel
MAADSS0018SMB Sample Board
MAADSS0018TR-1000 1000 piece reel
Pin No. Function Pin No. Function
1 V0.5 (0.5dB Bit) 9 RF In/Out
2 Ground 10 Ground
3 RF In/Out 11 VDD
4 Ground 12 Ground
5 Ground 13 V8 (8dB Bit)
6 Ground 14 V4 (4dB Bit)
7 Ground 15 V2 (2dB Bit)
8 Ground 16 V1 (1dB Bit)
1. Reference Application Note M513 for reel size information.
2. All sample boards include 5 loose parts.
North America Tel: 800.366.2266 / Fax: 978.366.2266
Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300
Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298
Visit www.macomtech.com for additional data sheets and prod uct information.
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
changes to the product(s) or information contained herein without notice.
2
Digital Attenuator, 5-Bit, Single Control
15.5 dB, 2.0 - 6.0 GHz
Rev. V1
MAADSS0018
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions
is considering for development. Performance is based on target specifications, simulated results,
and/or prototype measurements. Commitment to develop is not guaranteed.
PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology
Solutions has under development. Performance is based on engineering tests. Specifications are
typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available.
Commitment to produce in volume is not guaranteed.
Electrical Specifications 4: TA = 25°C, Z0 = 50 , VDD = 5 V, VC = 5 V
Parameter Test Conditions Units Min. Typ. Max.
Reference Insertion Loss 3.4 GHz dB 0.0 2.0 3.0
Attenuation Accuracy 3.4 GHz ± (0.3 dB + 3% of attenuation setting in dB) dB
VSWR 2.0 - 6.0 GHz Ratio 1.45:1
Trise, Tfall 10% to 90% RF, 90% to 10% RF ns 50
Ton, Toff 50% Control to 90% RF ,
50% Control to 10% RF ns 50
Transients In Band mV 75
Input P1dB 2.0 GHz dBm 25
IP2 2-Tone, +5 dBm/tone, 1 MHz Spacing
2.0 - 6.0 GHz dBm 80
IP3 2-Tone, +5 dBm/tone, 1 MHz Spacing
2.0 - 6.0 GHz dBm 42
IC VC = 5 V µA 15 25
IDD VDD = 5 V µA 225 300
4. External DC blocking capacitors are required on all RF ports.
Truth Table 5
VC0.5 VC1 VC2 VC4 VC8 Attenuation (dB)
0 0 0 0 0 Reference IL
1 0 0 0 0 0.5
0 1 0 0 0 1
0 0 1 0 0 2
0 0 0 1 0 4
0 0 0 0 1 8
1 1 1 1 1 15.5
5. 0 = 0 V, 1 = 2.8 to 5V
Absolute Maximum Ratings 6,7
Parameter Absolute Maximum
Input Power
2.0 - 6.0 GHz +33 dBm
Control Voltage -0.5 V < VC < 5.5 V
Operating Temperature -40°C to +85°C
Storage Temperature -65°C to +150°C
6. Exceeding any one or combination of these limits may cause
permanent damage to this device.
7. M/A-COM does not recommend sustained operation near
these survivability limits.
North America Tel: 800.366.2266 / Fax: 978.366.2266
Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300
Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298
Visit www.macomtech.com for additional data sheets and prod uct information.
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
changes to the product(s) or information contained herein without notice.
3
Digital Attenuator, 5-Bit, Single Control
15.5 dB, 2.0 - 6.0 GHz
Rev. V1
MAADSS0018
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions
is considering for development. Performance is based on target specifications, simulated results,
and/or prototype measurements. Commitment to develop is not guaranteed.
PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology
Solutions has under development. Performance is based on engineering tests. Specifications are
typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available.
Commitment to produce in volume is not guaranteed.
Return Loss, Insertion Loss State
Typical Performance Curves
Relative Attenuation across all major states
Insertion Loss
Input Return Loss, across all major atten uation states
Output Return Loss, across all major atten u atio n states
Step Error vs. State over Frequency
-1.0
-0.8
-0.6
-0.4
-0.2
0.0
0.2
0.4
0.6
0.8
0.0 4.0 8.0 12.0 16.0
2 G Hz
4 G Hz
6 G Hz
State (dB)
-4.0
-3.5
-3.0
-2.5
-2.0
-1.5
-1.0
-0.5
0.0
2.0 3.0 4.0 5.0 6.0
+25°C
-40°C
+85°C
Frequency (GHz)
-40
-30
-20
-10
0
2.0 3.0 4.0 5.0 6.0
I nput Retur n L o ss
Ou tp u t Retu r n L oss
Frequency (GHz)
-40
-35
-30
-25
-20
-15
-10
2.0 3.0 4.0 5.0 6.0
0. 5 dB
1 dB
2 dB
4 dB
8 dB
15.5 dB
Frequency (GHz)
-50
-40
-30
-20
-10
0
2.0 3.0 4.0 5.0 6.0
0. 5 dB
1 dB
2 dB
4 dB
8 dB
15.5 dB
Frequency (GHz)
-16
-14
-12
-10
-8
-6
-4
-2
0
2.0 3.0 4.0 5.0 6.0 7.0
0.5 dB
1 dB
2 dB
4 dB
8 dB
15.5 dB
Frequency (GHz)
North America Tel: 800.366.2266 / Fax: 978.366.2266
Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300
Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298
Visit www.macomtech.com for additional data sheets and prod uct information.
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
changes to the product(s) or information contained herein without notice.
4
Digital Attenuator, 5-Bit, Single Control
15.5 dB, 2.0 - 6.0 GHz
Rev. V1
MAADSS0018
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions
is considering for development. Performance is based on target specifications, simulated results,
and/or prototype measurements. Commitment to develop is not guaranteed.
PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology
Solutions has under development. Performance is based on engineering tests. Specifications are
typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available.
Commitment to produce in volume is not guaranteed.
Handling Procedures
Please observe the following precautions to avoid
damage:
Static Sensitivity
Gallium Arsenide Integrated Circuits are sensitive
to electrostatic discharge (ESD) and can be
damaged by static electricity. Proper ESD control
techniques should be used when handling these
devices.
Lead Free 3 mm 16-Lead PQFN
† Reference Application Note S2083 for lead-free solder reflow recommendations.
Meets JEDEC moisture sensitivity level 1 requirements.
Plating is 100% matte tin over copper.
41
42
43
44
45
46
47
48
49
03691215
2 G Hz
5 G Hz
State
IP3