Attenuator
dc – 6.0 GHz
Features
♦
♦
♦
♦
♦
Rev A
Preliminary Information
MAATGM0001
6 Bit Attenuator Range
35dB Coverage, LSB = 0.56dB
TTL Control Inputs
MSAG™ Process
5mm, 28 Lead, PQFN Package
Description
The
MAATGM0001
is a 6-bit Attenuator with Parallel Input Control. This
product is fully matched to 50 ohms on both the input and output.
Fabricated using M/A-COM’s repeatable, high performance and highly
reliable GaAs Multifunction Self-Aligned Gate MESFET Process, each
device is 100% RF tested on wafer to ensure performance compliance.
M/A-COM’s MSAG™ process features robust silicon-like manufacturing
processes, planar processing of ion implanted transistors, multiple im-
plant capability enabling power, low-noise, switch and digital FETs on a
single chip, and polyimide scratch protection for ease of use with auto-
mated manufacturing processes. The use of refractory metals and the
absence of platinum in the gate metal formulation prevents hydrogen
poisoning when employed in hermetic packaging.
TG0001
Primary Applications
♦
Satellite Communication
♦
Phased Array Radar
Maximum Ratings
1
Parameter
Input Power
Source Supply Voltage
Junction Temperature
Storage Temperature
Symbol
P
IN
V
EE
T
J
T
STG
Absolute Maximum
36
-6
170
-55 to +150
Units
dBm
V
°C
°C
1. Operation beyond these limits may result in permanent damage to the part.
Recommended Operating Conditions
2
Characteristic
Control Voltage
Logic High
Logic Low
Junction Temperature
Digital Supply Voltage
T
J
V
EE
-5.2
-5
Symbol
A1 thru A6
2.8
0
5
0
5
0.8
150
-4.8
V
V
°C
V
Min
Typ
Max
Unit
2. Operation outside of these ranges may reduce product reliability.
1
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.
Attenuator
dc – 6.0 GHz
Electrical Characteristics: T
B
= 25°C, Z
0
= 50Ω, V
EE
= -5V
Parameter
Bandwidth
Reference State Insertion Loss
Input VSWR (All States)
Output VSWR (All States)
RMS Attenuation Error
RMS Attenuation Error — Calibrated
Attenuation Range
Phase Variation over all Attenuator settings
Digital Supply Current
Input Third Order Intercept
Input 1-dB Compression Point
Symbol
f
IL
VSWR
VSWR
RMS
RMS
∆G
∆Ф
IEE
ITOI
P
1dB
Typical
dc - 6
4
1.5:1
1.5:1
2
0.2
35
<8
<10
36
26
Rev A
Preliminary Information
MAATGM0001
Units
GHz
dB
dB
dB
dB
°
mA
dBm
dBm
Truth Table
3
Pin
22
23
24
25
26
27
28
Designation
A6
A5
A4
V
EE
A3
A2
A1
Description
18.0dB Attenuation Bit : MSB
9.0dB Attenuation Bit
4.5dB Attenuation Bit
DC Suply Voltage
2.25db Attenuation Bit
1.12dB Attenuation Bit
0.56dB Attenuation Bit : LSB
Level
Logic High
Logic High
Logic High
-5V
Logic High
Logic High
Logic High
State
Attenuation
≈
18.0dB
Attenuation
≈
9.0dB
Attenuation
≈
4.5dB
ON
Attenuation
≈
2.25dB
Attenuation
≈
1.12dB
Attenuation
≈
0.56dB
3. All Attenuation Bits at Logic Low = Reference State.
Operating Instructions
This device is static sensitive. Please handle with care. To
operate the device, follow these steps.
1. Apply V
EE
= -5 V.
2.
Apply Logic Voltages to control circuit as listed in
Recommended Operating Conditions Table.
3.
Power Down. Set V
EE
= 0.
2
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
2
Visit www.macom.com for additional data sheets and product information.
Attenuator
dc – 6.0 GHz
10
6
Rev A
Preliminary Information
MAATGM0001
5.0
4.0
Average Error
RMS Error
RMS Error - Calibrated
Insertion Loss
Input VSWR
8
Output VSWR
5
3.0
2.0
Insertion Loss (dB)
Attenuation Error (°)
6
4
VSWR
1.0
0.0
-1.0
-2.0
-3.0
-4.0
4
3
2
2
0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Frequency (GHz)
1
-5.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Frequency (GHz)
Figure 2. Attenuator Figures of Merit: Average Error,
RMS Error, and Calibrated RMS Error Over All States vs. Frequency
Figure 1. Reference State Insertion Loss, Input and Output VSWR vs. Frequency
0
-5
45
30
-10
Relative Phase Shift (°)
-15
Gain (dB)
-20
-25
-30
-35
-30
-40
-45
0.0
1.0
2.0
3.0
Frequency (GHz)
Figure 3. Relative Gain vs. Frequency Over All Attenuator States
4.0
5.0
6.0
-45
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Frequency (GHz)
Figure 4. Relative Phase Shift vs. Frequency Over All Attenuator States
15
0
-15
6
6
5
5
Input VSWR
4
Output VSWR
4
3
3
2
2
1
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
Frequency (GHz)
4.0
4.5
5.0
5.5
6.0
1
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Frequency (GHz)
Figure 6. Output VSWR vs. Frequency Over All Attenuator States
Figure 5. Input VSWR vs. Frequency Over All Attenuator States
3
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.
Attenuator
dc – 6.0 GHz
Rev A
Preliminary Information
MAATGM0001
Figure 7. 5mm PQFN 28 Lead Package Drawing
Reference JEDEC M0-220 (see http://www.jedec.org), VAR. VJJC-3 (Issue E) for additional dimensional and tolerance information.
V
E E
0.1
μ
F
VEE
A1
A2
A3
A4
A5
T G0001
Figure 8. Recommended Bias Configuration
Note: The exposed pad centered on the package bottom must be connected to RF
and dc ground for proper electrical and thermal operation.
Refer to M/A-COM Application Note
Surface Mounting Instructions for PQFN Packages #S2083*
for assembly guidelines.
Additional Precaution: All parts must receive a bake-out of 125ºC for 24 hours prior to any solder reflow operation.
*Application Notes can be found by going to the Site Search Page of M/A-COM’s web page (http://www.macom.com/search/search.jsp) and
searching for the required Application Note.
4
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.
A6
6
CONTROL
INPUTS
Attenuator
dc – 6.0 GHz
Rev A
Preliminary Information
MAATGM0001
Figure 9. Demonstration Board PN MAATGM0001-SMB (available upon request).
5
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.
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