AT90-0283
Digital Attenuator
15.5 dB, 5-Bit, TTL Driver, DC-3.5 GHz
Features
•
•
•
•
•
•
•
•
Attenuation: 0.5 dB Steps to 15.5 dB
Low DC Power Consumption
Small Footprint, JEDEC Package
Integral TTL Driver
50 ohm Impedance
Test Boards are Available
Tape and Reel Packaging Available
CSP-1 Package
Rev. V10
Functional Schematic
Description
M/A-COM's AT90-0283 is a GaAs FET 5-bit digital
attenuator with integral TTL driver. Step size is 0.5
dB providing a 15.5 dB total attenuation range. This
device is in an PQFN plastic surface mount
package. AT90-0283 is ideally suited for use where
accuracy, fast speed, very low power consumption
and low costs are required.
Pin Configuration
1
Pin No.
1
2
3
4
Function
GND
C8
C4
C2
C1
C0.5
GND
NC
NC
NC
2
GND
RF1
GND
NC
NC
NC
Pin No.
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Function
NC
NC
NC
NC
NC
NC
NC
NC
NC
GND
RF2
GND
NC
2
-Vee
NC
+Vcc
Ordering Information
Part Number
AT90-0283
AT90-0283TR
AT90-0283-TB
5
6
Package
Bulk Packaging
1000 piece reel
Sample Test Board
7
8
9
10
11
Note: Reference Application Note M513 for reel size
information.
12
13
14
15
16
1.
2.
The exposed pad centered on the package bottom must be
connected to RF and DC ground. (For PQFN Packages)
Pins 10 & 29 must be isolated
1
ADVANCED:
Data Sheets contain information regarding a product M/A-COM Technology Solutions
•
North America
Tel: 800.366.2266 •
Europe
Tel: +353.21.244.6400
is considering for development. Performance is based on target specifications, simulated results,
•
India
Tel: +91.80.4155721
•
China
Tel: +86.21.2407.1588
and/or prototype measurements. Commitment to develop is not guaranteed.
Visit www.macomtech.com for additional data sheets and product information.
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.
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.
AT90-0283
Digital Attenuator
15.5 dB, 5-Bit, TTL Driver, DC-3.5 GHz
Electrical Specifications: T
A
= 25°C, Z
0
= 50Ω
Parameter
Insertion Loss
Attenuation Accuracy
Rev. V10
Test Conditions
—
Individual Bits 0.5-1-4-8 dB
Individual Bit 2 dB
Any Combination of Bits
1 to 15.5 dB
Full Range
50% Cntl to 90%/10% RF
10% to 90% or 90% to 10%
—
—
Two-tone inputs up to +5 dBm
—
—
LOW-level input voltage
HIGH-level input voltage
Vin = V
CC
or GND
Vcntrl = V
CC
or GND
V
CC
= Max, Vcntrl = V
CC
- 2.1 V
Frequency
DC - 3.5 GHz
DC - 3.5 GHz
DC - 3.5 GHz
DC - 3.5 GHz
DC - 3.5 GHz
—
—
50 MHz
0.5 - 3.5 GHz
50 MHz
0.5-3.5 GHz
—
—
—
—
—
—
—
Units
dB
dB
dB
dB
Ratio
ns
ns
dBm
dBm
dB
dB
V
V
V
V
uA
uA
mA
Min
—
—
—
—
—
—
—
—
—
—
—
4.75
-8.0
0.0
2.0
-1.0
—
—
Typ
2.8
—
—
—
1.6:1
75
20
+21
+29
+35
+48
5.0
-5.0
—
—
—
250
—
Max
3.2
±(.3 +5% of atten setting)
±(.4 +10% of atten setting)
±(.5 +7% of atten setting)
1.8:1
150
50
—
—
—
—
5.25
-4.75
0.8
5.0
1.0
400
1.0
VSWR
Switching Speed
1 dB Compression
Input IP
3
Vcc
Vee
V
IL
V
IH
lin (Input Leakage Current)
Icc
(Quiescent Supply Current)
ΔIcc
(Additional Supply Current
Per TTL Input Pin)
I
EE
Thermal Resistance
θjc
V
EE
min to max, Vin = V
IL
or V
IH
—
—
—
mA
°C/W
-1.0
—
-0.2
15
—
—
2
ADVANCED:
Data Sheets contain information regarding a product M/A-COM Technology Solutions
•
North America
Tel: 800.366.2266 •
Europe
Tel: +353.21.244.6400
is considering for development. Performance is based on target specifications, simulated results,
•
India
Tel: +91.80.4155721
•
China
Tel: +86.21.2407.1588
and/or prototype measurements. Commitment to develop is not guaranteed.
Visit www.macomtech.com for additional data sheets and product information.
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.
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.
AT90-0283
Digital Attenuator
15.5 dB, 5-Bit, TTL Driver, DC-3.5 GHz
Rev. V10
Recommended PCB Configuration
6
Absolute Maximum Ratings
3,4
Parameter
Max. Input Power
0.05 GHz
0.5 - 3.5 GHz
V
CC
V
EE
V
CC
- V
EE
Vin
5
Operating Temperature
Storage Temperature
3.
4.
5.
Absolute Maximum
+27 dBm
+34 dBm
-0.5V
≤
V
CC
≤
+7.0V
-8.5V
≤
V
EE
≤
+0.5V
-0.5V
≤
V
CC
- V
EE
≤
14.5V
-0.5V
≤
Vin
≤
V
CC
+ 0.5V
-40ºC to +85ºC
-65ºC to +125ºC
Exceeding any one or combination of these limits may cause
permanent damage to this device.
M/A-COM does not recommend sustained operation near
these survivability limits.
Standard CMOS TTL interface, latch-up will occur if logic
signal is applied prior to power supply.
6.
Application Note C2083 is available on line at
www.macom.com
Handling Procedures
Please observe the following precautions to avoid
damage:
Truth Table (Digital Attenuator)
C8
0
0
0
0
0
1
1
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.
C4
0
0
0
0
1
0
1
C2
0
0
0
1
0
0
1
C1
0
0
1
0
0
0
1
C0.5
0
1
0
0
0
0
1
Attenuation
Loss, Reference
0.5 dB
1.0 dB
2.0 dB
4.0 dB
8.0 dB
15.5 dB
Moisture Sensitivity
The MSL rating for this part is defined as Level 2
per IPC/JEDEC J-STD-020. Parts shall be stored
and/or baked as required for MSL Level 2 parts.
0 = TTL Low; 1 = TTL High
3
ADVANCED:
Data Sheets contain information regarding a product M/A-COM Technology Solutions
•
North America
Tel: 800.366.2266 •
Europe
Tel: +353.21.244.6400
is considering for development. Performance is based on target specifications, simulated results,
•
India
Tel: +91.80.4155721
•
China
Tel: +86.21.2407.1588
and/or prototype measurements. Commitment to develop is not guaranteed.
Visit www.macomtech.com for additional data sheets and product information.
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.
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.
AT90-0283
Digital Attenuator
15.5 dB, 5-Bit, TTL Driver, DC-3.5 GHz
Typical Performance Curves
Insertion Loss
VSWR @ Insertion Loss
Rev. V10
3.0
1.75
Inp ut
Out p ut
2.5
Lo ss (dB)
VSWR Ratio
0
500
1000
1500
2000
2500
3000
3500
1.50
2.0
1.5
1.0
1.25
1.00
0
500
1000
1500
2000
2500
3000
3500
Frequency (MHz)
Fre que ncy (MHz )
Attenuation Error, 0.5 dB Bit
1.0
Attenuation Error, 1 dB Bit
1.0
0.5
0.5
Error (dB)
Error (dB)
0.0
0.0
-0.5
-0.5
-1.0
0
500
1000
1500
2000
2500
3000
3500
-1.0
0
500
1000
1500
2000
2500
3000
3500
Frequency (MHz)
Fre que ncy (MHz )
Attenuation Error, 2 dB Bit
1.0
Attenuation Error, 4 dB Bit
1.0
0.5
Error (dB)
0.0
Error (dB)
0
500
1000
1500
2000
2500
3000
3500
0.5
0.0
-0.5
-1.0
-0.5
0
500
1000
1500
2000
2500
3000
3500
Fre que ncy (MHz )
Fre que ncy (MHz )
4
ADVANCED:
Data Sheets contain information regarding a product M/A-COM Technology Solutions
•
North America
Tel: 800.366.2266 •
Europe
Tel: +353.21.244.6400
is considering for development. Performance is based on target specifications, simulated results,
•
India
Tel: +91.80.4155721
•
China
Tel: +86.21.2407.1588
and/or prototype measurements. Commitment to develop is not guaranteed.
Visit www.macomtech.com for additional data sheets and product information.
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.
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.
AT90-0283
Digital Attenuator
15.5 dB, 5-Bit, TTL Driver, DC-3.5 GHz
Rev. V10
Typical Performance Curves
Attenuation Error, 8 dB Bit
Attenuation Error, Max. Attenuation
1.0
3.0
2.0
Error (dB)
Error (dB)
0.5
1.0
0.0
0.0
-0.5
0
500
1000
1500
2000
2500
3000
3500
-1.0
0
500
1000
1500
2000
2500
3000
3500
Fre que ncy (MHz )
Fre que ncy (MHz )
VSWR, 0.5 dB Bit
Out p ut
VSWR, 1 dB Bit
I np ut
O ut p ut
1.6
Inp ut
1.6
VSWR Ratio
VSWR Ratio
1.4
1.4
1.2
1.2
1.0
0
500
1000
1500
2000
2500
3000
3500
1.0
0
500
1000
1500
2000
2500
3000
3500
Frequency (MHz)
Fre que ncy (MHz)
5
ADVANCED:
Data Sheets contain information regarding a product M/A-COM Technology Solutions
•
North America
Tel: 800.366.2266 •
Europe
Tel: +353.21.244.6400
is considering for development. Performance is based on target specifications, simulated results,
•
India
Tel: +91.80.4155721
•
China
Tel: +86.21.2407.1588
and/or prototype measurements. Commitment to develop is not guaranteed.
Visit www.macomtech.com for additional data sheets and product information.
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.
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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