Digital Attenuator, 31 dB, 5-Bit
DC - 2.0 GHz MAATSS0020
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.
V1
1
RoHS
Compliant
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 Version 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
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 increased
performance and reliability.
Ordering Information1
Part Number Package
MAATSS0020 SSOP 20-Lead
MAATSS0020TR-3000 3000 piece reel
1. Reference Application Note M513 for reel size information.
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.
* Restrictions on Hazardous Substances, European Union Directive 2002/95/EC.
Functional Schematic
Digital Attenuator, 31 dB, 5-Bit
DC - 2.0 GHz MAATSS0020
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.
V1
2
RoHS
Compliant
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 ± (0.20 dB +3% of Atten Setting in dB) dB
± (0.30 dB +3% of Atten Setting in dB) dB
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 —
—
4. Attenuation accuracy specifications apply with negative bias control and low inductance grounding.
Truth Table5
5. 0 = Vin Low = 0 V = 0 to -0.2 V @ 20 μA maximum.
1 = Vin High = -5 V @ 20 µA typical to –8 V @ 200 μA
maximum.
VC5 VC4 VC4 VC3 VC3 VC2 VC2 VC1 VC1 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
damaged by static electricity. Proper ESD control
techniques should be used when handling these
devices.
Digital Attenuator, 31 dB, 5-Bit
DC - 2.0 GHz MAATSS0020
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.
V1
3
RoHS
Compliant
Typical Performance Curves
Attenuation Accuracy
0
1
2
3
4
0.0 0.5 1.0 1.5 2.0
+25°C
-40°C
+85°C
Frequency (GHz)
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
0.0 0.5 1.0 1.5 2.0
2 dB
4 dB
8 dB
16 dB
31 dB
Frequency (GHz)
Lead-Free SSOP-20†
† Reference Application Note M538 for lead-free solder reflow recommendations.
Insertion Loss
VSWR
