AT-263-PIN
Digital Attenuator
31.0 dB, 5-Bit, TTL Driver, DC-2.0 GHz
Features
•
Attenuation: 1 dB steps to 31 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 Ohm Nominal Impedance
•
Lead-Free CR-12 Package
•
260°C Reflow Compatible
•
RoHS* Compliant
Rev. V6
Functional Schematic
Description
M/A-COM’s AT-263-PIN is a GaAs FET 5-bit digital
attenuator with a 1 dB minimum step size and 31 dB
total attenuation. This attenuator and integral TTL
driver is in a hermetically sealed ceramic 16-lead
surface mount package. The AT-263-PIN is ideally
suited for use where accuracy, fast switching, very
low power consumption and low intermodulation
products are required. Typical applications include
dynamic range setting in precision receiver circuits
and other gain/leveling control circuits. Environ-
mental screening is available. Contact the factory
for information.
Pin Configuration
Pin No.
1
2
3
4
5
6
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-263-PIN
AT-263TR
AT-263-TB
7
8
Package
Bulk Packaging
1000 piece reel
Sample Test Board
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-263-PIN
Digital Attenuator
31.0 dB, 5-Bit, TTL Driver, DC-2.0 GHz
Electrical Specifications: (From –55°C to +85°C)
1
Parameter
Reference Insertion Loss
Rev. V6
Test Conditions
—
Frequency
DC - 0.5 GHz
DC - 1.0 GHz
DC - 2.0 GHz
DC - 1.0 GHz
DC - 2.0 GHz
DC - 2.0 GHz
—
—
—
0.05 GHz
0.5 - 2.0 GHz
0.05 GHz
0.5 - 2.0 GHz
0.05 GHz
0.5 - 2.0 GHz
—
—
—
Units
dB
dB
dB
Min
—
—
—
Typ
—
—
—
Max
2.4
2.8
3.0
Attenuation Accuracy
2
Any Single Bit
Any Combination of Bits
—
10% to 90%
50% Control to 90/10% RF
In-Band (peak-peak)
Input Power
Input Power
For two-tone Input Power
Up to +5 dBm
For two-tone Input Power
Up to +5 dBm
—
—
Vcc = 4.5 to 5.5V
Vctl = 0 to 0.8V, or Vcc –
2.1V to Vcc
Vee = -5.0 to -8.0V
Logic 0 (TTL)
Logic 1 (TTL)
0 to 0.8V
2.0 to 5.0V
± (0.25 +3% of atten setting in dB) dB
± (0.25 +3% of atten setting in dB) dB or ± 0.4 dB,
whichever is greater
Ratio
ns
ns
mV
dBm
dBm
dBm
dBm
dBm
dBm
V
V
mA
—
—
—
—
—
—
—
—
—
—
4.5
-8.0
—
—
9
40
30
+20
+28
+40
+48
+45
+68
5.0
—
—
1.6:1
—
—
—
—
—
—
—
—
—
5.5
-5.0
5.0
VSWR
Trise, Tfall
Ton, Toff
Transients
1 dB Compression
Input IP3
Input IP2
Vcc
Vee
Icc
Iee
Vctl
Vctl
Input Leakage Current (Low)
Input Leakage Current (High)
—
—
—
—
—
mA
V
V
µA
µA
—
0.0
2.0
—
—
—
—
—
—
—
1.0
0.8
5.0
1.0
1.0
1. All specifications apply when operated with bias voltages of +5V for Vcc and –5.0V for Vee.
2. This attenuator is guaranteed monotonic.
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-263-PIN
Digital Attenuator
31.0 dB, 5-Bit, TTL Driver, DC-2.0 GHz
Absolute Maximum Ratings
3,4
Parameter
Max Input Power
0.05 GHz
0.5 - 2.0 GHz
V
CC
V
EE
V
CC
- V
EE
Vin
5
Operating Temperature
Storage Temperature
3.
4.
5.
Rev. V6
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
C5
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
C3
0
0
0
1
0
0
1
C2
0
0
1
0
0
0
1
C1
0
1
0
0
0
0
1
Attenuation
Reference
1 dB
2 dB
4 dB
8 dB
16 dB
31 dB
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.
AT-263-PIN
Digital Attenuator
31.0 dB, 5-Bit, TTL Driver, DC-2.0 GHz
Typical Performance Curves
Ref. Insertion Loss vs. Frequency
+ 8 5 °C
5
+ 2 5 °C
- 55 °C
Rev. V6
Attenuation Accuracy vs. Frequency
1,2 , 4 ,8 , 16 d B
F ull A t t enuat io n
4
Deviation from Nominal Atten
(dB)
0.5
0
Loss (dB)
3
-0.5
2
1
-1
0
0.0
0.5
1.0
1.5
2.0
-1.5
0.0
0.5
1.0
1.5
2.0
Fre que ncy (GHz )
Fre que ncy (GHz )
VSWR vs. Frequency
4 d B St at e
2.00
1.80
1 d B St at e
Lead-Free,
CR-12 Ceramic Package
†
V SW R
1.60
1.40
1.20
1.00
0.00
0.50
1.00
1.50
2.00
Frequency (GHz)
†
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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