AT-283-PIN
Digital Attenuator
15.5 dB, 5-Bit, TTL Driver, DC-2.0 GHz
Features
•
Attenuation: 0.5 dB Steps to 15.5 dB
•
Temperature Stability: ± 0.18 dB from –55°C
to +85°C Typical
•
Low DC Power Consumption
•
Hermetic Surface Mount Package
•
Integral TTL Driver
•
50
Ω
Nominal Impedance
•
Lead-Free CR-12 Package
•
260°C Reflow Compatible
•
RoHS* Compliant
Rev. V7
Functional Schematic
Description
M/A-COM’s AT-283-PIN is a GaAs FET 5-bit digital
attenuator with a 0.5 dB minimum step size and 15.5
dB total attenuation. This attenuator and integral
TTL driver is in a hermetically sealed ceramic 16
lead surface mount package. The AT-283-PIN is
ideally suited for use where accuracy, fast switching,
very low power consumption and low intermodula-
tion products are required. Typical applications in-
clude dynamic range setting in precision receiver
circuits and other gain/leveling control circuits. Envi-
ronmental screening is available. Contact the fac-
tory for information.
Pin Configuration
Pin No.
1
2
3
4
Function
RF1
GND
GND
GND
GND
GND
GND
RF2
Pin No.
9
10
11
12
13
14
15
16
Function
C5
+5V
-5V
C4
C3
C2
C1
GND
Ordering Information
Part Number
AT-283-PIN
MAAD-007229-0001TR
MAAD-007229-0001TB
5
6
7
Package
Bulk Packaging
1000 piece reel
Sample Test Board
8
The metal bottom of the case must be connected to RF and DC
ground.
Note: Reference Application Note M513 for reel size
information.
* Restrictions on Hazardous Substances, European Union Directive 2002/95/EC.
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.
AT-283-PIN
Digital Attenuator
15.5 dB, 5-Bit, TTL Driver, DC-2.0 GHz
Rev. V7
Electrical Specifications: T
A
= 25°C
1
Parameter
Reference
Insertion Loss
Attenuation Accuracy
2
Test Conditions
DC-0.5 GHz
DC-1.0 GHz
DC-2.0 GHz
Any Single Bit
Any Combination of Bits
DC-1.0 GHz
DC-2.0 GHz
10% to 90%
50% Control to 90/10% RF
In-band (peak—peak)
Input Power
Input Power
0.05 GHz
0.5-2.0 GHz
0.05 GHz
0.5-2.0 GHz
0.05 GHz
0.5-2.0 GHz
DC-2.0 GHz
DC-2.0 GHz
Units
dB
dB
dB
Min
—
—
—
Typ
—
—
—
Max
2.2
2.5
2.9
± (0.25 +3% of attenuation setting in dB) dB
± (0.25 +3% of attenuation setting in dB) dB
or ± 0.4 dB, whichever is greater
—
—
nS
nS
mV
dBm
dBm
dBm
dBm
dBm
dBm
V
V
mA
mA
V
V
µA
µA
—
—
—
—
—
—
—
—
—
—
—
4.5
-8.0
—
—
0.0
2.0
—
—
—
—
10
27
22
+20
+28
+40
+47
+53
+68
5.0
—
—
—
—
—
—
—
1.6:1
1.7:1
—
—
—
—
—
—
—
—
—
5.5
-5.0
5.0
1.0
0.8
5.0
1.0
1.0
VSWR
Trise, Tfall
Ton, Toff
Transients
1 dB Compression
3
Input IP
3 3
Input IP
2 3
V
CC
V
EE
I
CC
I
EE
Vctl
Vctl
Input Leakage Current (Low)
Input Leakage Current (High)
1.
2.
3.
For two-tone input power
up to +5 dBm
For two-tone input power
up to +5 dBm
—
—
V
CC
= 4.5 to 5.5V
Vctl = 0 to 0.8V, or V
CC
- 2.1V to V
CC
V
EE
= -5.0 to –8.0V
Logic 0 (TTL)
Logic 1 (TTL)
0 to 0.8V
2.0 to 5.0V
All specifications apply when operated with bias voltages of +5.0V for V
CC
and –5.0V to -8.0V for V
EE
, and 50
Ω
impedance at all ports
unless otherwise specified.
This attenuator is guaranteed monotonic.
V
EE
= -5.0V for the typical numbers given.
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.
AT-283-PIN
Digital Attenuator
15.5 dB, 5-Bit, TTL Driver, DC-2.0 GHz
Absolute Maximum Ratings
4,5
Parameter
Maximum Input Power
0.05 GHz
0.5-2.0 GHz
V
CC
V
EE
V
CC
- V
EE
Vin
6
Operating Temperature
Storage Temperature
4.
5.
6.
Rev. V7
Recommended PCB Configuration
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
-55°C to +125°C
-65°C to +150°C
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.
Handling Procedures
Please observe the following precautions to avoid
damage:
Truth Table (Digital Attenuator)
Control Inputs
C1
0
1
0
0
0
0
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.
C2
0
0
1
0
0
0
1
C3
0
0
0
1
0
0
1
C4
0
0
0
0
1
0
1
C5
0
0
0
0
0
1
1
Attenuation
Reference
0.5 dB
1 dB
2 dB
4 dB
8 dB
15.5 dB
Typical Performance Curves
Reference Insertion Loss vs. Frequency @ Temperature
+ 8 5 °C
5.0
+ 2 5 °C
- 55 °C
1
0 = TTL Low; 1 = TTL High
Attenuation Accuracy vs. Frequency 0.5, 1, 2 dB Bits
Deviation from Nom. Atten. (dB)
0.5
Insertion Loss (dB)
4.0
3.0
0.3
0.0
2.0
1.0
-0.3
0.0
0
500
1000
1500
2000
-0.5
0
500
1000
1500
2000
Fre que ncy (MHz )
3
Fre que ncy (MHz )
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.
AT-283-PIN
Digital Attenuator
15.5 dB, 5-Bit, TTL Driver, DC-2.0 GHz
Typical Performance Curves
Attenuation Accuracy vs. Frequency 4, 8 dB Bits and
Full Attenuation
VSWR vs. Frequency Reference Loss, 0.5, 1, 2 dB Bits
Rev. V7
F ull A t t en.
Deviation from Nom. Atten. (dB)
1.0
2.0
1.8
VSWR
0.5
1.6
1.4
1.2
0.0
-0.5
0
500
1000
1500
2000
1.0
0
500
1000
1500
2000
Fre que ncy (MHz )
Fre que ncy (MHz )
VSWR vs. Frequency 4, 8 dB Bits and Full Attenuation
Lead-Free,
CR-12 Ceramic Package
†
2.0
1.8
VSW R
1.6
1.4
1.2
1.0
0
500
1000
1500
2000
Frequency (MHz)
†
Reference Application Note M538 for lead-free solder reflow
recommendations.
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.
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