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 product 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, 1-Bit, 10 dB Step
DC - 2.0 GHz
Rev. V2
MAATSS0018
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
Single 10 dB Step
Low Loss: 0.3 dB @ 900 MHz
Lead-Free SOT-25 Package
100% Matte Tin Plating over Copper
Halogen-Free “Green” Mold Compound
260°C Reflow Compatible
RoHS* Compliant Version of AT-266
Description
M/A-COM’s MAATSS0018 is a 1 bit, 10 dB step
GaAs MMIC digital attenuator in a lead-free SOT-25
surface mount plastic package. The MAATSS0018
is ideally suited for use where high accuracy, very
low power consumption and low intermodulation
products are required. Typical applications include
radio, wireless LANs, GPS equipment and other
gain/level control circuits.
The MAATSS0018 is a GaAs MMIC using a mature
1-micron process. The process features full chip
passivation for increased performance and reliability.
Ordering Information
Part Number Package
MAATSS0018 Bulk Packaging
MAATSS0018TR 1000 piece reel
1. Reference Application Note M513 for reel size information.
Pin No.
Function
1 RF1
2 GND
3 RF2
4 V1
5 V2
Description
RF In/Out
RF Ground
RF In/Out
Control Voltage
Control Voltage
Pin Configuration
Functional Block Diagram
V1 V2 Attenuation State
0 1 10 dB
1 0 Insertion Loss
Truth Table 4,5,6
4. For positive voltage control, external DC blocking capacitors
are required on all RF ports (pins 1, 2 and 3)
5. Differential voltage, V(state 1) - V(state 0), must be +2.8 V
minimum and less than 8 V.
6. 0 = -8 V to 0.2 V, 1 = -0.2 V to 8 V
Absolute Maximum Ratings 2,3
Parameter Absolute Maximum
Input Power
50 MHz
500 - 2000 MHz
+27 dBm
+34 dBm
Control Voltage -8.5 V < Vc < +8 V
Operating Temperature -40°C to +85°C
Storing 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.
* Restrictions on Hazardous Substances, European Union Directive 2002/95/EC.
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 product 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, 1-Bit, 10 dB Step
DC - 2.0 GHz
Rev. V2
MAATSS0018
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, VC = 0 V / -3 V, Z0 = 50 Ω
Parameter Test Conditions Units Min. Typ. Max.
Insertion Loss 0 - 1 GHz
1 - 2 GHz
dB
dB
0.3
0.5
0.45
0.7
Attenuation DC - 2 GHz dB 9.5 10 10.5
VSWR 0 - 2 GHz Ratio 1.4:1
IP3 2 Tone @ 0 dBm, 5 MHz spacing dBm 50
P1dB 1 GHz dBm 28
Trise, Tfall 10% to 90% RF, 90% to 10% RF nS 5
Ton, Toff 50% Control to 90% RF, 50% Control to 10% RF nS 10
Transients In Band mV 6
Control Current Vc = 3 V µA 25
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 SOT-25
† Reference Application Note M538 for lead-free solder reflow recommendations.
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 product 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, 1-Bit, 10 dB Step
DC - 2.0 GHz
Rev. V2
MAATSS0018
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.
Insertion Loss (Negative Co ntrol)
Relative Attenuation (Positive Control) Relative Attenuation (Negative Co ntrol)
Typical Performance Curves (39 pF capacitors used for positive voltage control)
Return Loss (Reference State) Return Loss (10 dB State)
Insertion Loss (Positive Contro l)
0.0
0.2
0.4
0.6
0.8
1.0
0.00.51.01.52.02.53.0
+25°C
-40°C
+85°C
Frequency (GHz)
0.0
0.2
0.4
0.6
0.8
1.0
0.00.51.01.52.02.53.0
+25°C
-40°C
+85°C
Frequency (GHz)
9.0
9.5
10.0
10.5
11.0
0.00.51.01.52.02.53.0
+25°C
-40°C
+85°C
Frequency (GHz)
9.0
9.5
10.0
10.5
11.0
0.00.51.01.52.02.53.0
+25°C
-40°C
+85°C
Frequency (GHz)
0
10
20
30
40
0.00.51.01.52.02.53.0
Positive Control
Negative Control
Frequency (GHz)
0
10
20
30
40
0.00.51.01.52.02.53.0
Positive Control
Negative Control
Frequency (GHz)