Digital Attenuator, 1-Bit, 15 dB, 75 Ω
DC - 1.1 GHz
Rev. V1
MAAD-010305
1
• North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400
• India Tel: +91.80.43537383 • China Tel: +86.21.2407.1588
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.
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 15-dB Step
• Insertion Loss: 0.3 dB @ 1.1 GHz
• 75 Ω Impedance
• 2.5 to 5.0 Volt Operation
• Positive or Negative Voltage Control
• Lead-Free SOT-25 Package
• Halogen-Free “Green” Mold Compound
• RoHS* Compliant and 260°C Reflow Compatible
Description
The MAAD-010305 is a 1-bit, 15-dB step GaAs
MMIC digital attenuator in a lead-free SOT-25,
5 lead surface mount plastic package.
The MAAD-010305 is fabricated as a monolithic
GaAs integrated circuit using a mature pHEMT
process. The process features full chip passivation
for performance and reliability.
This device is ideally suited for use where high
accuracy, very low power consumption and low
intermodulation products are required.
Functional Schematic
Pin Configuration
Pin No. Function
1 RF Input Port
2 Ground
3 RF Output Port
4 V1
5 V2
Ordering Information 1,2
Part Number Package
MAAD-010305-TR1000 1000 piece reel
MAAD-010305-TR3000 3000 piece reel
MAAD-010305-001SMB Sample Board
* Restrictions on Hazardous Substances, European Union Directive 2002/95/EC.
1. Reference Application Note M513 for reel size information.
2. All sample boards include 5 loose parts.
Digital Attenuator, 1-Bit, 15 dB, 75 Ω
DC - 1.1 GHz
Rev. V1
MAAD-010305
2
• North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400
• India Tel: +91.80.43537383 • China Tel: +86.21.2407.1588
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.
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 Specifications3: TA = 25°C, VC = +2.5 Volts, Z0 = 75 Ω
Parameter Test Conditions Units Min. Typ. Max.
Insertion Loss
(Reference State) 1.1 GHz dB — 0.3 0.45
Attenuation 1.1 GHz dB 14.6 15.1 15.6
Input Return Loss DC - 1.1 GHz dB — 14 —
Input IP3
1.1 GHz
Insertion Loss State
Attenuation State
dBm —
—
46
46
—
—
P1dB
1.1 GHz
Insertion Loss State
Attenuation State
dBm —
—
20
20
—
—
CTB 157 Channels, PIN = 35 dBmV/ch. dBc — 70 —
CSO 157 Channels, PIN = 35 dBmV/ch. dBc — 66 —
Trise, Tfall 10% to 90% RF, 90% to 10% RF ns — 15 —
Ton, Toff 50% Control to 90% RF,
50% Control to 10% RF ns — 20 —
Transients In-band mV — 20 —
Control Current — µA — — 5
Output Return Loss DC - 1.1 GHz dB — 14 —
3. For positive voltage control, external DC blocking capacitors are required on all RF ports (pins 1, 2 and 3).
Absolute Maximum Ratings 4,5
Parameter Absolute Maximum
Input Power +21 dBm
Control Voltage 8 V
Operating Temperature -40°C to +85°C
Storage Temperature -65°C to +150°C
4. Exceeding any one or combination of these limits may cause
permanent damage to this device.
5. M/A-COM Technology Solutions does not recommend
sustained operation near these survivability limits.
Truth Table
Mode
(Control) V1 V2 Attenuation
Positive 6 0 ± 0.2V
+2.5V to +5V
+2.5V to +5V
0 ± 0.2V
15 dB
Reference State
Negative 7 0 ± 0.2V
-2.5V to -5V
-2.5V to -5V
0 ± 0.2V
Reference State
15 dB
6. External DC blocking capacitors are required as noted.
7. If negative control is used, DC blocking capacitors are not
required on RF ports and ground.
Digital Attenuator, 1-Bit, 15 dB, 75 Ω
DC - 1.1 GHz
Rev. V1
MAAD-010305
3
• North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400
• India Tel: +91.80.43537383 • China Tel: +86.21.2407.1588
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.
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.
Positive Control Voltage Schematic Recommended PCB Layout
PCB Land Pattern
Plated Vias are .024 diameter
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.
Digital Attenuator, 1-Bit, 15 dB, 75 Ω
DC - 1.1 GHz
Rev. V1
MAAD-010305
4
• North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400
• India Tel: +91.80.43537383 • China Tel: +86.21.2407.1588
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.
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.
Output Return Loss Output Return Loss_Full Attenuation
Input Return Loss Input Return Loss_Full Attenuation
Insertion Loss Relative Attenuation
Typical Performance Curves with C1,C2,C3 = 0.01 µF, positive or negative mode (control)
-18
-17
-16
-15
-14
-13
-12
0.0 0.5 1.0 1.5 2.0
+25°C
-40°C
+85°C
Frequency (GHz)
-50
-40
-30
-20
-10
0
0.0 0.5 1.0 1.5 2.0
+25°C
-40°C
+85°C
Frequency (GHz)
-40
-35
-30
-25
-20
-15
-10
-5
0
0.0 0.5 1.0 1.5 2.0
+25°C
-40°C
+85°C
Frequency (GHz)
-50
-40
-30
-20
-10
0
0.0 0.5 1.0 1.5 2.0
+25°C
-40°C
+85°C
Frequency (GHz)
-40
-35
-30
-25
-20
-15
-10
-5
0
0.0 0.5 1.0 1.5 2.0
+25°C
-40°C
+85°C
Frequency (GHz)
-2.0
-1.5
-1.0
-0.5
0.0
0.5
1.0
1.5
2.0
0.0 0.5 1.0 1.5 2.0
+25°C
-40°C
+85°C
Frequency (GHz)
Digital Attenuator, 1-Bit, 15 dB, 75 Ω
DC - 1.1 GHz
Rev. V1
MAAD-010305
5
• North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400
• India Tel: +91.80.43537383 • China Tel: +86.21.2407.1588
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.
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.
Lead-Free SOT-25†
† Reference Application Note M538 for lead-free solder reflow recommendations.
Plating is 100% matte tin over copper.
