Digital Attenuator, 1-Bit, 10 dB Step
DC - 2.0 GHz
MAATSS0018
M/A-COM Inc. and its affiliates reserve the right to make changes to the
product(s) or information contained herein without notice. M/A-COM makes
no warranty, representation or guarantee regarding the suitability of its
products for any particular purpose, nor does M/A-COM assume any liability
whatsoever arising out of the use or application of any product(s) or
information.
• 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.macom.com for additional data sheets and product information.
V2
1
RoHS
Compliant
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
Note: Reference Application Note M513 for reel size
information.
Absolute Maximum Ratings 1,2
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
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 3,4,5
3. For positive voltage control, external DC blocking capacitors
are required on all RF ports (pins 1, 2 and 3)
4. Differential voltage, V(state 1) - V(state 0), must be +2.8 V
minimum and less than 8 V.
5. 0 = -8 V to 0.2 V, 1 = -0.2 V to 8 V
1. Exceeding any one or combination of these limits may cause
permanent damage to this device.
2. M/A-COM does not recommend sustained operation near
these survivability limits.
* Restrictions on Hazardous Substances, European Union Directive 2002/95/EC.
Digital Attenuator, 1-Bit, 10 dB Step
DC - 2.0 GHz
MAATSS0018
M/A-COM Inc. and its affiliates reserve the right to make changes to the
product(s) or information contained herein without notice. M/A-COM makes
no warranty, representation or guarantee regarding the suitability of its
products for any particular purpose, nor does M/A-COM assume any liability
whatsoever arising out of the use or application of any product(s) or
information.
• 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.macom.com for additional data sheets and product information.
V2
2
RoHS
Compliant
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.
Digital Attenuator, 1-Bit, 10 dB Step
DC - 2.0 GHz
MAATSS0018
M/A-COM Inc. and its affiliates reserve the right to make changes to the
product(s) or information contained herein without notice. M/A-COM makes
no warranty, representation or guarantee regarding the suitability of its
products for any particular purpose, nor does M/A-COM assume any liability
whatsoever arising out of the use or application of any product(s) or
information.
• 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.macom.com for additional data sheets and product information.
V2
3
RoHS
Compliant
Insertion Loss (Negative Control)
Relative Attenuation (Positive Control) Relative Attenuation (Negative Control)
Typical Performance Curves (39 pF capacitors used for positive voltage control)
Return Loss (Reference State) Return Loss (10 dB State)
Insertion Loss (Positive Control)
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)
