MAAD-010305
Digital Attenuator, 1-Bit, 15 dB, 75 Ω
DC - 1.1 GHz
Functional Schematic
Features
Rev. V1
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
5
4
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.
Ordering Information
1
2
3
Pin Configuration
1,2
Pin No.
Function
1
RF Input Port
2
Ground
3
RF Output Port
Part Number
Package
4
V1
MAAD-010305-TR1000
1000 piece reel
5
V2
MAAD-010305-TR3000
3000 piece reel
MAAD-010305-001SMB
Sample Board
1. Reference Application Note M513 for reel size information.
2. All sample boards include 5 loose parts.
* Restrictions on Hazardous Substances, European Union Directive 2002/95/EC.
1
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macom.com for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
MAAD-010305
Digital Attenuator, 1-Bit, 15 dB, 75 Ω
DC - 1.1 GHz
Rev. V1
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
—
Output 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
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
8V
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
Positive 6
0 ± 0.2V
+2.5V to +5V
+2.5V to +5V
15 dB
0 ± 0.2V
Reference State
Negative 7
0 ± 0.2V
-2.5V to -5V
-2.5V to -5V
0 ± 0.2V
V2
Attenuation
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.
2
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macom.com for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
MAAD-010305
Digital Attenuator, 1-Bit, 15 dB, 75 Ω
DC - 1.1 GHz
Positive Control Voltage Schematic
V1
Recommended PCB Layout
V2
5
4
1
C1
Rev. V1
2
C3
IN
3
C2
OUT
PCB Land Pattern
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.
Plated Vias are .024 diameter
3
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macom.com for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
MAAD-010305
Digital Attenuator, 1-Bit, 15 dB, 75 Ω
DC - 1.1 GHz
Rev. V1
Typical Performance Curves with C1,C2,C3 = 0.01 µF, positive or negative mode (control)
Insertion Loss
Relative Attenuation
2.0
-12
1.5
+25°C
-40°C
+85°C
1.0
+25°C
-40°C
+85°C
-13
-14
0.5
0.0
-15
-0.5
-16
-1.0
-17
-1.5
-2.0
0.0
0.5
1.0
1.5
2.0
-18
0.0
0.5
1.0
Frequency (GHz)
1.5
2.0
1.5
2.0
1.5
2.0
Frequency (GHz)
Input Return Loss_Full Attenuation
Input Return Loss
0
0
+25°C
-40°C
+85°C
-10
-5
+25°C
-40°C
+85°C
-10
-15
-20
-20
-30
-25
-30
-40
-35
-50
0.0
0.5
1.0
1.5
2.0
-40
0.0
0.5
Frequency (GHz)
1.0
Frequency (GHz)
Output Return Loss
Output Return Loss_Full Attenuation
0
0
-5
+25°C
-40°C
+85°C
-10
+25°C
-40°C
+85°C
-10
-15
-20
-20
-30
-25
-30
-40
-35
-50
0.0
0.5
1.0
Frequency (GHz)
1.5
2.0
-40
0.0
0.5
1.0
Frequency (GHz)
4
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macom.com for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
MAAD-010305
Digital Attenuator, 1-Bit, 15 dB, 75 Ω
DC - 1.1 GHz
Rev. V1
Lead-Free SOT-25†
† Reference Application Note M538 for lead-free solder reflow recommendations.
Plating is 100% matte tin over copper.
5
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macom.com for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
MAAD-010305
Digital Attenuator, 1-Bit, 15 dB, 75 Ω
DC - 1.1 GHz
Rev. V1
M/A-COM Technology Solutions Inc. All rights reserved.
Information in this document is provided in connection with M/A-COM Technology Solutions Inc ("MACOM")
products. These materials are provided by MACOM as a service to its customers and may be used for
informational purposes only. Except as provided in MACOM's Terms and Conditions of Sale for such products or
in any separate agreement related to this document, MACOM assumes no liability whatsoever. MACOM
assumes no responsibility for errors or omissions in these materials. MACOM may make changes to
specifications and product descriptions at any time, without notice. MACOM makes no commitment to update
the information and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future
changes to its specifications and product descriptions. No license, express or implied, by estoppels or otherwise,
to any intellectual property rights is granted by this document.
THESE MATERIALS ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR
IMPLIED, RELATING TO SALE AND/OR USE OF MACOM PRODUCTS INCLUDING LIABILITY OR
WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, CONSEQUENTIAL OR
INCIDENTAL DAMAGES, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR
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OR COMPLETENESS OF THE INFORMATION, TEXT, GRAPHICS OR OTHER ITEMS CONTAINED WITHIN
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WHICH MAY RESULT FROM THE USE OF THESE MATERIALS.
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customers using or selling MACOM products for use in such applications do so at their own risk and agree to
fully indemnify MACOM for any damages resulting from such improper use or sale.
6
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macom.com for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support