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RoHS Compliant
Attenuator, Digital, 5-Bit 0.1-20.0 GHz
Features

MAATGM0004
Rev -- Preliminary Information
5-Bit Attenuator, 22 dB Range, LSB = 0.75 dB 0.1 to 20.0 GHz Operation 4 mm, 24-Lead PQFN TTL Control Inputs MSAGTM Process
Description
The MAATGM0004 is a 5-bit bi-directional Digital Attenuator with Parallel Input Control. This product is fully matched to 50 ohms on both the input and output. Each device is 100% RF tested to ensure performance compliance. The part is fabricated using M/A-COM's GaAs Multifunction Self-Aligned Gate (MSAG) Process. The 4 mm PQFN package has a lead-free lead finish that is RoHS compliant and compatible with a 260C reflow temperature. The package also features low lead inductance and an excellent thermal path. The MTTF is 1,000,000 hours at 170C.
Primary Applications

Also Available in:
Description Part Number Die MAATGM0004-DIE Plastic Package Sample Board MAAT-000004-SMB003
VSAT Point-to-Point Communications Weather Radar Military Radar Electronic Warfare
Electrical Characteristics: TB = 25C, Z0 = 50, VEE = -5V
Parameter Bandwidth Attenuation Range Digital Supply Current Reference State Insertion Loss (<10 GHz) Reference State Insertion Loss (10 - 20 GHz) VSWR (All States - <10 GHz) VSWR (All States - 10 - 20 GHz) Attenuation Error (<10 GHz) Attenuation Error (10 - 20 GHz) Phase Variation (All States - <10 GHz) Phase Variation (All States - 10 - 20 GHz)
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.
Symbol f G IEE IL IL VSWR VSWR Err Err
Typical 0.1-20 22 <10 <4 <6 1.5:1 3:1 -1.5 to +0.1 -0.5 to +2.0 <5 <20
Units GHz dB mA dB dB
dB dB
* 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.
RoHS Compliant
Attenuator, Digital, 5-Bit 0.1-20.0 GHz
Maximum Ratings1
Parameter Input Power Source Supply Voltage Junction Temperature Storage Temperature Symbol PIN VEE TJ TSTG Absolute Maximum 36 -6 170 -55 to +150 Units dBm V C C
MAATGM0004
Rev -- Preliminary Information
1. Operation beyond these limits may result in permanent damage to the part.
Recommended Operating Conditions2
Characteristic Control Voltage Logic High Logic Low Junction Temperature Digital Supply Voltage TJ VEE -5.2 -5 Symbol A1 thru A6 3 0 5 0 5 0.4 150 -4.8 V V C V Min Typ Max Unit
2. Operation outside of these ranges may reduce product reliability.
Truth Table3
Pin 19 20 21 22 23 24 Description 12.0 dB Attenuation Bit 6.0 dB Attenuation Bit VEE: DC Suply Voltage 3.0 dB Attenuation Bit 1.5 dB Attenuation Bit 0.75 dB Attenuation Bit : LSB Level Logic High Logic High -5V Logic High Logic High Logic High State Attenuation 12.0 dB Attenuation 6.0 dB ON Attenuation 3.0 dB Attenuation 1.5 dB Attenuation 0.75 dB
3. All Attenuation Bits at Logic Low = Reference State.
Operating Instructions
This device is static and light sensitive. Operation of the digital circuitry can be impaired under high intensity light, e.g., microscope light. No voltage sequencing is required to operate this part.
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: 81.44.844.82982 Visit www.macom.com for additional data sheets and product information.
RoHS Compliant
Attenuator, Digital, 5-Bit 0.1-20.0 GHz
10 9 8 7 Insertion Loss (dB) 6 5 4 3 2 1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 Frequency (GHz) Insertion Loss (dB) 10
MAATGM0004
Rev -- Preliminary Information
-50C 50C 150C
9 8 7 6 5 4 3 2 1 0 2
-50C 50C 150C
4
6
8
10
12
14
16
18
20
Frequency (GHz)
Figure 1. Insertion Loss vs. Frequency & Case Temperature - Reference State
Figure 2. Insertion Loss vs. Frequency & Case Temperature - Reference State
28 26 24 22 20 Insertion Loss (dB) 18 16 14 12 10 8 6 4 2 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 Frequency (GHz) Insertion Loss (dB)
28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 2 4 6 8 10 12 14 16 18 20 Frequency (GHz)
Figure 3. Relative Insertion Loss vs. Frequency & Attenuation State - All States
Figure 4. Relative Insertion Loss vs. Frequency & Attenuation State - All States
30 25 20 Relative Insertion Phase () Relative Insertion Phase () 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 15 10 5 0 -5 -10 -15 -20 -25 -30 Frequency (GHz)
30 25 20 15 10 5 0 -5 -10 -15 -20 -25 -30 2 4 6 8 10 12 14 16 18 20 Frequency (GHz)
Figure 5. Relative Insertion Phase vs. Frequency & Attenuation State - All States
Figure 6. Relative Insertion Phase vs. Frequency & Attenuation State - All 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.
RoHS Compliant
Attenuator, Digital, 5-Bit 0.1-20.0 GHz
6 6
MAATGM0004
Rev -- Preliminary Information
5
5
4 VSWR 3 VSWR
4
3
2
2
1 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 Frequency (GHz)
1 2 4 6 8 10 12 14 16 18 20 Frequency (GHz)
Figure 7. VSWR (RF Port 1) vs. Frequency & Attenuation State - All States
Figure 8. VSWR (RF Port 1) vs. Frequency & Attenuation State - All States
6
6
5
5
4 VSWR
4 VSWR
3
3
2
2
1 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 Frequency (GHz)
1 2 4 6 8 10 12 14 16 18 20 Frequency (GHz) Figure 10. VSWR (RF Port 2) vs. Frequency & Attenuation State - All States
Figure 9. VSWR (RF Port 2) vs. Frequency & Attenuation State - All States
5.0 4.0 3.0 Attenuation Error (dB) 2.0 1.0 0.0 -1.0 -2.0 -3.0 -4.0 -5.0 0.0 1.5 3.0 4.5 6.0 7.5 9.0 10.5 12.0 13.5 15.0 16.5 18.0 19.5 21.0 22.5 24.0 Commanded Attenuation State (dB)
IDEAL 2 GHz 10 GHz 18 GHz
Figure 11. Typical Attenuation Error vs. Commanded Attenuation State & Frequency
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.
RoHS Compliant
Attenuator, Digital, 5-Bit 0.1-20.0 GHz MAATGM0004
Rev -- Preliminary Information
Figure 12. 4mm PQFN 24 Lead Package Drawing
Reference JEDEC M0-220 (see http://www.jedec.org), VAR. VJJC-3 (Issue E) for additional dimensional and tolerance information.
VEE 0.01 to 0.1F 100pF - as close to the part as possible. Control Inputs
5
Figure 13. 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. *Application Notes can be found by going to M/A-COM's web page (http://www.macom.com/Application%20Notes/index.htm) and selecting the required Application Note.
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.
RoHS Compliant
Attenuator, Digital, 5-Bit 0.1-20.0 GHz MAATGM0004
Rev -- Preliminary Information
Figure 14. Demonstration Board PN MAAT-000004-SMB003 (available upon request).
6
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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