MA-COM AT-260 Digital attenuator, 31 db, 5-bit dc - 2.0 ghz Datasheet

AT-260
Digital Attenuator, 31 dB, 5-Bit
DC - 2.0 GHz
Functional Schematic
Features
•
•
•
•
•
•
Rev. V5
1-dB Attenuation Steps to 31 dB
Ultra Low DC Power Consumption
Low Intermodulation Products: IP3 = 50 dBm
SSOP-20 Plastic Package
Tape and Reel Packaging Available
Temperature Stability: ± 0.15 dB from –40°C to
+85°C
Description
M/A-COM’s AT-260 is a 5-bit, 1-dB step GaAs MMIC
digital attenuator in a low cost SSOP-20 surface
mount plastic package. The AT-260 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 AT-260 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 Information 1
Part Number
Package
AT-260
SSOP 20-Lead
AT-260TR
Forward Tape and Reel
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
1. Reference Application Note M513 for reel size information.
Absolute Maximum Ratings 2,3
Parameter
Absolute Maximum
Input Power:
0.05 GHz
0.5 - 2.0 GHz
+27 dBm
+34 dBm
Control Voltage
+5V, -8.5V
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.
1
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions
• North America Tel: 800.366.2266 / Fax: 978.366.2266
is considering for development. Performance is based on target specifications, simulated results,
• Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300
and/or prototype measurements. Commitment to develop is not guaranteed.
• Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298
PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology
Visit www.macomtech.com for additional data sheets and product information.
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. M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
Commitment to produce in volume is not guaranteed.
changes to the product(s) or information contained herein without notice.
AT-260
Digital Attenuator, 31 dB, 5-Bit
DC - 2.0 GHz
Rev. V5
Electrical Specifications: TA = 25°C, Z0 = 50 Ω
Parameter
Test Conditions
Units
Min.
Typ.
Max.
Reference Insertion Loss
DC - 0.1 GHz
DC - 0.5 GHz
DC - 1.0 GHz
DC - 2.0 GHz
dB
dB
dB
dB
—
—
—
—
1.6
1.7
1.9
2.2
1.8
1.9
2.2
2.5
Attenuation Accuracy 4
DC - 1.0 GHz
DC - 2.0 GHz
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
—
—
± (0.20 dB +3% of Atten Setting in dB) dB
± (0.30 dB +3% of Atten Setting in dB) dB
4. Attenuation accuracy specifications apply with negative bias control and low inductance grounding.
Truth Table 5
Handling Procedures
Please observe the following precautions to avoid
damage:
Control Inputs
VC VC VC VC VC VC VC VC VC
5
4
4
3
3
2
2
1
1
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
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.
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.
2
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions
• North America Tel: 800.366.2266 / Fax: 978.366.2266
is considering for development. Performance is based on target specifications, simulated results,
• Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300
and/or prototype measurements. Commitment to develop is not guaranteed.
• Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298
PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology
Visit www.macomtech.com for additional data sheets and product information.
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. M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
Commitment to produce in volume is not guaranteed.
changes to the product(s) or information contained herein without notice.
AT-260
Digital Attenuator, 31 dB, 5-Bit
DC - 2.0 GHz
Rev. V5
Typical Performance Curves
Attenuation Accuracy
Insertion Loss
1.0
4
+25°C
-40°C
+85°C
3
0.5
2
0.0
1
-0.5
0
0.0
2 dB
4 dB
8 dB
16 dB
31 dB
-1.0
0.5
1.0
1.5
2.0
0.0
0.5
1.0
1.5
2.0
Frequency (GHz)
Frequency (GHz)
VSWR
1.6
0
1
2
4
8
16
31
1.5
1.4
1.3
1.2
1.1
1.0
0.0
0.5
1.0
1.5
2.0
Frequency (GHz)
SSOP-20
3
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions
• North America Tel: 800.366.2266 / Fax: 978.366.2266
is considering for development. Performance is based on target specifications, simulated results,
• Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300
and/or prototype measurements. Commitment to develop is not guaranteed.
• Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298
PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology
Visit www.macomtech.com for additional data sheets and product information.
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. M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
Commitment to produce in volume is not guaranteed.
changes to the product(s) or information contained herein without notice.
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