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HMC941A-SX

P1-P3P4-P6
ATTENUATORS - CHIP
1
1 - 1
HMC941A
0.5 dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, 0.1 - 30 GHz
v01.1016
Electrical Specications, T
A
= +25° C, With Vdd = +5V, Vss = -5V & VCTL = 0/ +5V
The HMC941A is ideal for:
• Fiber Optics & Broadband Telecom
• Microwave Radio & VSAT
• Military Radios, Radar & ECM
• Space Applications
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
Die Size: 2.35 x 1 x 0.1 mm
The HMC941A die is a broadband 5-bit GaAs IC digi-
tal attenuator MMIC chip. Covering 0.1 to 30 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 attenu-
ation of 15.5 dB. Attenuation accuracy is excellent
at less than ± 0.5 dB typical step error with an IIP3
of +45 dBm. Five control voltage inputs, toggled
between +5V and 0V, are used to select each attenu-
ation state.
Parameter Frequency (GHz) Min. Typ. Max. Units
Insertion Loss
0.1 - 18.0 GHz
18.0 - 30.0 GHz
3.3
4.3
4.3
5.1
dB
dB
Attenuation Range 0.1 - 30.0 GHz 15.5 dB
Return Loss (RF1 & RF2, All Atten. States) 0.1 - 30.0 GHz 12 dB
Attenuation Accuracy: (Referenced to Insertion Loss)
0.5 - 7.5 dB States
8 - 15.5 dB States
0.1 - 30.0 GHz
0.1 - 30.0 GHz
± (0.3 + 4% of Atten. Setting )Max
± (0.3 + 5% of Atten. Setting) Max
dB
dB
Input Power for 0.1 dB Compression
0.1 - 0.5 GHz
0.5 - 30.0 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 - 30.0 GHz
45
43
dBm
dBm
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON/tOFF (50% CTL to 10/90% RF)
0.1 - 30.0 GHz
35
50
ns
ns
Idd 0.1 - 30.0 GHz 3 5 7 mA
Iss 0.1 - 30.0 GHz -4 -6 -8 mA
General Description
Features
Functional Diagram
Typical Applications
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.
ATTENUATORS - CHIP
1
1 - 2
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
-6
-5
-4
-3
-2
-1
0
0 5 10 15 20 25 30 35 40
+25 C +85 C -55 C
INSERTION LOSS (dB)
FREQUENCY (GHz)
-50
-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)
-50
-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)
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1
0 4 8 12 16
10.0 GHz
20 GHz
30 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)
HMC941A
v01.1016
0.5 dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, 0.1 - 30 GHz
ATTENUATORS - CHIP
1
1 - 3
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.
20
30
40
50
60
0 5 10 15 20 25 30 35 40
IL
0.5 dB
1dB
2 dB
4 dB
8 dB
15.5 dB
IP3 (dBm)
FREQUENCY (GHz)
HMC941A
v01.1016
0.5 dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, 0.1 - 30 GHz
Relative Phase vs. Frequency
(Only Major States are Shown)
Step Attenuation vs. Attenuation State
Input IP3 vs. Temperature
(Minimum Attenuation State)
Input IP3 Over Major Attenuation States
Input Power for 0.1 dB Compression
-10
0
10
20
30
40
50
60
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
RELATIVE PHASE (deg)
FREQUENCY (GHz)
20
30
40
50
60
0.1 1 10 100
+25C +85C -55C
IP3 (dBm)
FREQUENCY (GHz)
6
10
14
18
22
26
30
34
0.01 0.1 1 10 100
P0.1dB (dBm)
FREQUENCY (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
P1-P3P4-P6

HMC941A-SX

Mfr. #:
Buy HMC941A-SX
Manufacturer:
Analog Devices Inc.
Description:
Attenuators Attenuators-Sample Pack
Lifecycle:
New from this manufacturer.
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