ATTENUATORS - SMT
1
HMC941ALP4E
v01.1016
0.5 dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, 0.1 - 33 GHz
For price, delivery, and to place orders: Analog Devices, Inc.,
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
Electrical Specications, TA = +25° C, With Vdd = +5V, Vss = -5V, P0 - P4 = 0/ +5V
The HMC941ALP4E is ideal for:
• Fiber Optics & Broadband Telecom
• Microwave Radio & VSAT
• Military Radios, Radar & ECM
• Space Applications
• Sensors
• Test & Measurement Equipment
0.5 dB LSB Steps to 15.5 dB
Single Positive Control Line Per Bit
±0.5 dB Typical Bit Error
High Input IP3: +45 dBm
16mm2 Leadless SMT Plastic Package
The HMC941ALP4E is a broadband 5-bit
GaAs IC digital attenuators in low cost lead-
less surface mount packages. Covering 0.1
to 33.0 GHz, the insertion loss is less than
4 dB typical. The attenuator bit values are
0.5 (LSB), 1, 2, 4, 8, for a total attenuation of
15.5 dB. Attenuation accuracy is excellent
at ±0.3 dB typical step error with an IIP3 of
+45 dBm. Five control voltage inputs, toggled
between +5V and 0V, are used to select each
attenuation state.
Parameter Frequency (GHz) Min. Typ. Max. Units
Insertion Loss
0.1 - 18.0 GHz
18.0 - 26.5 GHz
26.5 - 33.0 GHz
3.5
4.0
5.0
4.5
6.0
6.5
dB
dB
Attenuation Range 0.1 - 33.0 GHz 15.5 dB
Return Loss (RF1 & RF2, All Atten. States) 0.1 - 33.0 GHz 12 dB
Attenuation Accuracy: (Referenced to Insertion Loss)
0.5 - 7.5 dB States
8 - 15.5 dB States
0.1 - 33.0 GHz
0.1 - 33.0 GHz
± (0.3 + 4% of Atten. Setting) Max
± (0.3 + 8% of Atten. Setting) Max
dB
dB
Input Power for 0.1 dB Compression 0.1 - 0.5 GHz
0.5 - 33.0 GHz
22
26
dBm
dBm
Input Third Order Intercept Point
(Two-Tone Input Power= +8 dBm Each Tone)
0.1 - 0.5 GHz
0.5 - 33.0 GHz
45
42
dBm
dBm
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON/tOFF (50% CTL to 10/90% RF)
0.1 - 33.0 GHz
40
50
ns
ns
Idd 0.1 - 33.0 GHz 2.5 4.5 6.5 mA
Iss 0.1 - 33.0 GHz -7.0 -6.0 -3.0 mA
General Description
Features
Functional Diagram
Typical Applications
HMC941ALP4E* PRODUCT PAGE QUICK LINKS
Last Content Update: 12/16/2017
COMPARABLE PARTS
View a parametric search of comparable parts.
EVALUATION KITS
•HMC941ALP4 Evaluation Board
DOCUMENTATION
Data Sheet
•HMC941ALP4E: 0.5 dB LSB GaAs MMIC 5-Bit Digital
Attenuator, 0.1 - 33 GHz Data Sheet
TOOLS AND SIMULATIONS
•HMC941ALP4 S-Parameters
REFERENCE MATERIALS
Product Selection Guide
•RF, Microwave, and Millimeter Wave IC Selection Guide
2017
DESIGN RESOURCES
•HMC941ALP4E Material Declaration
•PCN-PDN Information
•Quality And Reliability
•Symbols and Footprints
DISCUSSIONS
View all HMC941ALP4E EngineerZone Discussions.
SAMPLE AND BUY
Visit the product page to see pricing options.
TECHNICAL SUPPORT
Submit a technical question or find your regional support
number.
DOCUMENT FEEDBACK
Submit feedback for this data sheet.
This page is dynamically generated by Analog Devices, Inc., and inserted into this data sheet. A dynamic change to the content on this page will not
trigger a change to either the revision number or the content of the product data sheet. This dynamic page may be frequently modified.
HMC941ALP4E* PRODUCT PAGE QUICK LINKS
Last Content Update: 02/23/2017
COMPARABLE PARTS
View a parametric search of comparable parts.
EVALUATION KITS
•HMC941ALP4 Evaluation Board
DOCUMENTATION
Data Sheet
•HMC941ALP4E: 0.5 dB LSB GaAs MMIC 5-Bit Digital
Attenuator, 0.1 - 33 GHz Data Sheet
TOOLS AND SIMULATIONS
•HMC941ALP4 S-Parameters
DESIGN RESOURCES
•HMC941ALP4E Material Declaration
•PCN-PDN Information
•Quality And Reliability
•Symbols and Footprints
DISCUSSIONS
View all HMC941ALP4E EngineerZone Discussions.
SAMPLE AND BUY
Visit the product page to see pricing options.
TECHNICAL SUPPORT
Submit a technical question or find your regional support
number.
DOCUMENT FEEDBACK
Submit feedback for this data sheet.
This page is dynamically generated by Analog Devices, Inc., and inserted into this data sheet. A dynamic change to the content on this page will not
trigger a change to either the revision number or the content of the product data sheet. This dynamic page may be frequently modified.
ATTENUATORS - SMT
2
HMC941ALP4E
v01.1016
0.5 dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, 0.1 - 33 GHz
For price, delivery, and to place orders: Analog Devices, Inc., One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
Input Return Loss
(Only Major States are Shown)
Output Return Loss
(Only Major States are Shown)
Insertion Loss vs. Temperature
Normalized Attenuation
(Only Major States are Shown)
Bit Error vs. Frequency
(Only Major States are Shown)
Bit Error vs. Attenuation State
-14
-12
-10
-8
-6
-4
-2
0
0 5 10 15 20 25 30 35 40
+25 C +85 C -40 C
INSERTION LOSS (dB)
FREQUENCY (GHz)
-40
-30
-20
-10
0
0 5 10 15 20 25 30 35 40
IL
0.5 dB
1 dB
2 dB
4 dB
8 dB
15.5 dB
RETURN LOSS (dB)
FREQUENCY (GHz)
-40
-30
-20
-10
0
0 5 10 15 20 25 30 35 40
IL
0.5 dB
1 dB
2 dB
4 dB
8 dB
15.5 dB
RETURN LOSS (dB)
FREQUENCY (GHz)
-20
-15
-10
-5
0
0 5 10 15 20 25 30 35 40
I.L
0.5 dB
1 dB
2 dB
4 dB
8dB
15.5 dB
NORMALIZED ATTENUATION (dB)
FREQUENCY (GHz)
-0.8
-0.4
0
0.4
0.8
1.2
0 4 8 12 16
5.0 GHz
10 GHz
18 GHz
26.5 GHz
33 GHz
BIT ERROR (dB)
ATTENUATION STATE (dB)
-1.5
-1
-0.5
0
0.5
1
1.5
0 5 10 15 20 25 30 35 40
I.L
0.5 dB
1 dB
2 dB
4 dB
8 dB
15.5 dB
BIT ERROR (dB)
FREQUENCY (GHz)
ATTENUATORS - SMT
3
HMC941ALP4E
v01.1016
0.5 dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, 0.1 - 33 GHz
For price, delivery, and to place orders: Analog Devices, Inc., One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
20
30
40
50
60
0 0.1 1 10 100
IP3 (dBm)
FREQUENCY (GHz)
Relative Phase vs. Frequency
(Only Major States are Shown)
Step Attenuation vs. Attenuation State
0.1 - 18 GHz
Input IP3 vs. Temperature
(Minimum Attenuation State)
Input IP3 Over Major Attenuation States
Input Power for 0.1 dB Compression
-0.2
0
0.2
0.4
0.6
0.8
1
1.2
0 4 8 12 16
5 GHz 10 GHz 18 GHz
STEP ATTENUATION (dB)
ATTENUATION STATE (dB)
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1
1.2
1.4
0 4 8 12 16
26.5 GHz 33 GHz
STEP ATTENUATION (dB)
ATTENUATION STATE (dB)
20
30
40
50
60
0 5 10 15 20 25 30 35 40
-40C +25C +85C
IP3 (dBm)
FREQUENCY (GHz)
6
10
14
18
22
26
30
34
0.01 0.1 1 10 100
-40C 25C 85C
P0.1dB (dBm)
FREQUENCY (GHz)
Step Attenuation vs. Attenuation State
18 - 33 GHz
ATTENUATORS - SMT
4
HMC941ALP4E
v01.1016
0.5 dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, 0.1 - 33 GHz
For price, delivery, and to place orders: Analog Devices, Inc., One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
Control Voltage
Bias Voltages & Currents
Absolute Maximum Ratings
State Bias Condition
Low 0 to 0.8V @ 1 µA (Typ)
High 2 to 5V @ 1 µA (Typ)
Vdd +5V @ 4.5 mA
Vss -5V @ 6 mA
RF Input Power (0.1 to 33.0 GHz) +27dBm
Control Voltage (P0 to P4) Vdd+0.5
Vdd +7 Vdc
Vss -7 Vdc
Channel Temperature 150 °C
Continuous Pdiss (T = 85 oC)
(derate 6.8 mW/oC above 85 oC) 0.453 W
Thermal Resistance 143.5 °C/W
Storage Temperature -65 to 150 °C
Operating Temperature -40 to +85 °C
ESD Sensitivity (HBM) Class1A ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
Outline Drawing
Part Number Package Body Material Lead Finish MSL Rating Package Marking [2]
HMC941ALP4E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL3 [1] H941A
XXXX
[1] Max peak reow temperature of 260 °C
[2] 4-Digit lot number XXXX
Package Information
ATTENUATORS - SMT
5
HMC941ALP4E
v01.1016
0.5 dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, 0.1 - 33 GHz
For price, delivery, and to place orders: Analog Devices, Inc., One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
Pad Number Function Description Interface Schematic
1Vss Negative Bias -5V
2-4, 6-13,
15 -17, 19 N/C
The pins are not connected internally; however, all data
shown herein was measured with these pins connected to
RF/DC ground externally.
5, 14 RF1, RF2 These pins are DC coupled and matched to 50 Ohm. Blocking
capacitors are required if RF line potential is not equal to 0V.
18 Vdd Positive Bias +5V
20 - 24 P0 - P4 See truth table and control voltage table.
GND Package bottom must be connected to RF/DC ground.
Pin Descriptions
Truth Table
Control Voltage Input Attenuation
State
RF1 - RF2
P4
8 dB
P3
4 dB
P2
2 dB
P1
1 dB
P0
0.5 dB
High High High High High Reference I.L.
High High High High Low 0.5 dB
High High High Low High 1 dB
High High Low High High 2 dB
High Low High High High 4 dB
Low High High High High 8 dB
Low Low Low Low Low 15.5 dB
Any Combination of the above states will provide an attenuation
approximately equal to the sum of the bits selected.
ATTENUATORS - SMT
6
HMC941ALP4E
v01.1016
0.5 dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, 0.1 - 33 GHz
For price, delivery, and to place orders: Analog Devices, Inc., One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
Evaluation PCB
U1
C1 C2
J3
J2
J4 J5
J1
131909-1
THRU CAL
RF1 RF2
VSS
VDD
P0
P1
P2
P3
P4
GND
GND
List of Materials for Evaluation PCB EV1HMC941ALP4 [1]
Item Description
J1, J2, J4, J5 2.9 mm PC Mount RF Connector
J3 DC Connector
C1, C2 1000 pF Capacitor, 0402 Pkg.
U1 HMC941ALP4E Digital Attenuator
PCB [2] 131909 Evaluation Board
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350
The circuit board used in the application should use
RF circuit design techniques. Signal lines should
have 50 Ohm impedance while the package ground
leads should be connected directly to the ground
plane similar to that shown. A sufficient number of
via holes should be used to connect the top and
bottom ground planes. The evaluation circuit board
shown is available from Analog Devices upon
request.