• 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, 31 dB, 5-Bit
DC - 2.0 GHz
Rev. V1
MAATSS0020
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
• 1-dB Attenuation Steps to 31 dB
• Ultra Low DC Power Consumption
• Low Intermodulation Products: IP3 = 50 dBm
• Tape and Reel Packaging Available
• Temperature Stability: ± 0.15 dB from –40°C to
+85°C
• Lead-Free SSOP-20 Package
• 100% Matte Tin Plating over Copper
• Halogen-Free “Green” Mold Compound
• 260°C Reflow Compatible
• RoHS* Compliant Versi on of AT-260
Description
M/A-COM’s MAATSS0020 is a 5-bit, 1-dB step
GaAs MMIC digital attenuator in a lead-free SSOP-
20 surface mount plastic package. The
MAATSS0020 is ideally suited for use where high
power accuracy, fast switching, very low power
consumption and low intermodulation products are
required at a low cost.
Typical Applications include radio and cellular
equipment, wireless LANS, GPS equipment and
other gain/level control circuits.
The MAATSS0020 is fabricated with a monolithic
GaAs MMIC using a mature 1-micron process.
The process features full chip passivation for in-
creased performance and reliability.
Ordering Information1
MAATSS0020 SSOP 20-Lead
MAATSS0020TR-3000 3000 piece reel
Part Number Package
1. Reference Application Note M513 for reel size information.
* Restrictions on Hazardous Substances, European Union Directive 2002/95/EC.
Functional Schematic
Pin Configuration
Pin No. Function Pin No. Function
1 VC1 11 RF1
2 VC1 12 Ground
3 VC2 13 Ground
4 VC2 14 Ground
5 VC3 15 Ground
6 VC3 16 Ground
7 VC4 17 Ground
8 VC4 18 Ground
9 No
Connection 19 Ground
10 VC5 20 RF2
Absolute Maximum Ratings 2,3
Parameter Absolute Maximum
Input Power:
0.05 GHz
0.5 - 2.0 GHz
+27 dBm
+34 dBm
Control Voltage +5 V, -8.5 V
Operating Temperature -40°C to +85°C
Storage Temperature -65°C to +150°C
2. Exceeding any one or combination of these limits may cause
permanent damage to this device.
3. 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.
2
Digital Attenuator, 31 dB, 5-Bit
DC - 2.0 GHz
Rev. V1
MAATSS0020
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: TA = 25°C, Z0 = 50 Ω
Parameter Test Conditions Units Min. Typ. Max.
Reference Insertion Loss
DC - 0.1 GHz
0.1 - 0.5 GHz
0.5 - 1.0 GHz
1.0 - 2.0 GHz
dB
dB
dB
dB
—
—
—
—
1.6
1.7
1.9
2.2
—
—
2.2
—
Attenuation Accuracy 4 DC - 1.0 GHz
DC - 2.0 GHz
VSWR (Any State) Ratio — 1.5:1 —
Trise, Tfall 10% to 90% RF, 90% to 10% RF nS — 8 —
Ton, Toff 50%Control to 90% RF,
50% Control to 10% RF nS — 15 —
Transients In Band mV — 2 —
1 dB Compression Input Power
0.05 GHz
0.5 - 2.0 GHz
dBm
dBm
—
—
20
27
—
—
IP2
0.05 GHz
0.5 - 2.0 GHz
Measured Relative to Input Power
(for two-tone input power up to +5 dBm)
dBm
dBm
—
—
45
60
—
—
IP3
0.05 GHz
0.5 - 2.0 GHz
Measured Relative to Input Power
(for two-tone input power up to +5 dBm)
dBm
dBm
—
—
34
50
—
—
± (0.20 dB + 3% of Atten Setting in dB) dB
± (0.30 dB + 3% of Atten Setting in dB) dB
4. Attenuation accuracy specifications apply with negative bias control and low inductance grounding.
Truth Table 5
VC
5
VC
4
VC
4
VC
3
VC
3
VC
2
VC
2
VC
1
VC
1 Atten (dB)
1 1 0 1 0 1 0 1 0 Reference
0 1 0 1 0 1 0 1 0 1 dB
1 0 1 1 0 1 0 1 0 2 dB
1 1 0 0 1 1 0 1 0 4 dB
1 1 0 1 0 0 1 1 0 8 dB
1 1 0 1 0 1 0 0 1 16 dB
0 0 1 0 1 0 1 0 1 31 dB
Control Inputs
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 dam-
aged by static electricity. Proper ESD control tech-
niques should be used when handling these de-
vices.
5. 0 = Vin Low = 0 V = 0 to -0.2V @ 20 µA maximum.
1 = Vin High = -5V @ 20 µA typical to -8 V @ 200 µA maximum.
• 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, 31 dB, 5-Bit
DC - 2.0 GHz
Rev. V1
MAATSS0020
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.
Typical Performance Curves
Insertion Loss Attenuation Accuracy
VSWR
1.0
1.1
1.2
1.3
1.4
1.5
1.6
0.0 0.5 1.0 1.5 2.0
0
1
2
4
8
16
31
Frequency (GHz)
-1.0
-0.5
0.0
0.5
1.0
0.00.51.01.52.0
2 dB
4 dB
8 dB
16 dB
31 dB
Frequency (GHz)
0
1
2
3
4
0.00.51.01.52.0
+25°C
-40°C
+85°C
Frequency (GHz)
Lead-Free SSOP-20 †
† Reference Application Note M538 for lead-free solder reflow recommendations.
