HMC424G16
v04.0709
0.5dB LSB GaAs MMIC 6-BIT DIGITAL
ATTENUATOR, DC - 3 GHz
5
ATTENUATORS - DIGITAL - SMT
Typical Applications
The HMC424G16 is ideal for:
• Telecom Infrastructure
• Military Radios, Radar & ECM
• Space Applications
• Test Instrumentation
Features
0.5 dB LSB Steps to 31.5 dB
Single Control Line Per Bit
±0.5 to ±0.8 dB Typical Bit Error
16 Lead Hermetic SMT Package
Functional Diagram
General Description
The HMC424G16 is a broadband 6-bit GaAs IC
digital attenuator in a 16 lead glass/metal (hermetic)
surface mount package. Covering DC to 3 GHz, the
insertion loss is less than 3 dB typical. The attenuator
bit values are 0.5 (LSB), 1, 2, 4, 8, and 16 dB for a
total attenuation of 31.5 dB. Attenuation accuracy
is excellent at ±0.5 dB typical step error with an IIP3
of +32 dBm. Six control voltage inputs, toggled bet-
ween 0 and -5V, are used to select each attenuation
state at less than 70 μA each. A single Vee bias of
-5V allows operation at frequencies down to DC.
Electrical Specifi cations,
T
A
= +25° C, With Vee = -5V & Vctl = 0/-5V
Parameter
Insertion Loss
Attenuation Range
Return Loss (RF1 & RF2, All Atten. States)
Attenuation Accuracy: (Referenced to Insertion Loss)
All States
All States
Input Power for 0.1 dB Compression
Input Third Order Intercept Point
(Two-Tone Input Power= 0 dBm Each Tone)
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON/tOFF (50% CTL to 10/90% RF)
REF State
All Other States
DC - 2.0 GHz
2.0 - 3.0 GHz
1.0 - 3.0 GHz
1.0 - 3.0 GHz
DC - 3 GHz
30
50
ns
ns
± 0.4 + 4% of Atten. Setting Max
± 0.5 + 5% of Atten. Setting Max
22
46
32
dB
dB
dBm
dBm
dBm
Frequency (GHz)
DC - 3 GHz
DC - 3 GHz
DC - 3 GHz
Min.
Typ.
3.0
31.5
12
Max.
3.6
Units
dB
dB
dB
5 - 98
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. Specifications 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.
For price, delivery, and to place orders: Analog Devices, Inc.,
For price, delivery, and to place orders, please contact Hittite
Way, P.O. Box 9106, Norwood, MA 02062-9106
Microwave Corporation:
One Technology
20 Alpha Road, Chelmsford, MA 01824 Phone:
Phone: 781-329-4700 • Order online at www.analog.com
978-250-3343 Fax: 978-250-3373
Application Support: Phone: 1-800-ANALOG-D
Order On-line at www.hittite.com
HMC424G16
v04.0709
0.5dB LSB GaAs MMIC 6-BIT DIGITAL
ATTENUATOR, DC - 3 GHz
Return Loss RF1, RF2
Insertion Loss
0
-1
INSERTION LOSS (dB)
-2
-3
-4
-5
-6
0
0.5
1
1.5
2
2.5
3
3.5
4
FREQUENCY (GHz)
+25C
+85C
-40C
(Only Major States are Shown)
0
0.5 dB
1 dB
2 dB
4 dB
8 dB
16 dB
31.5 dB
5
ATTENUATORS - DIGITAL - SMT
5 - 99
-5
RETURN LOSS (dB)
-10
-15
-20
-25
0
0.5
1
1.5
2
2.5
3
3.5
4
FREQUENCY (GHz)
Normalized Attenuation
(Only Major States are Shown)
2
0
BIT ERROR (dB)
NORMALIZED ATTENUATION (dB)
-5
1
-10
-15
0
-20
-25
-1
-30
-2
-35
0
4
0.5
8
1
12
1.5
16
2
20
2.5
24
3
28
3.5
32
4
ATTENUATION STATE (dB)
FREQUENCY (GHz)
-2
0
4
8
12
16
20
24
28
32
ATTENUATION STATE (dB)
0.14 GHz
1 GHz
2 GHz
3 GHz
Bit Error vs. Attenuation State
2
1
BIT ERROR (dB)
0.14 GHz
1 GHz
2 GHz
3 GHz
0
0.5 dB
1 dB
2 dB
4 dB
8 dB
16 dB
31.5 dB
-1
Bit Error vs. Frequency
(Only Major States are Shown)
3
2
BIT ERROR (dB)
1
0
-1
-2
-3
0
0.5
1
1.5
2
2.5
3
3.5
4
FREQUENCY (GHz)
0.5 dB
1 dB
2 dB
4 dB
8 dB
16 dB
31.5 dB
Relative Phase vs. Frequency
(Only Major States are Shown)
100
80
RELATVIE PHASE (deg)
60
40
20
0
-20
0
0.5
1
1.5
2
2.5
3
3.5
4
FREQUENCY (GHz)
0.5 dB
1 dB
2 dB
4 dB
8 dB
16 dB
31.5 dB
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. Specifications 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.
For price, delivery, and to place orders: Analog Devices, Inc.,
For price, delivery, and to place orders, please contact Hittite
Way, P.O. Box 9106, Norwood, MA 02062-9106
Microwave Corporation:
One Technology
20 Alpha Road, Chelmsford, MA 01824 Phone:
Phone: 781-329-4700 • Order online at www.analog.com
978-250-3343 Fax: 978-250-3373
Application Support: Phone: 1-800-ANALOG-D
Order On-line at www.hittite.com
HMC424G16
v04.0709
0.5dB LSB GaAs MMIC 6-BIT DIGITAL
ATTENUATOR, DC - 3 GHz
5
ATTENUATORS - DIGITAL - SMT
Worst Case Step Error
Between Successive Attenuation States
2
1.5
1
STEP ERROR (dB)
0.5
0
-0.5
-1
-1.5
-2
0
0.5
1
1.5
2
2.5
3
3.5
4
FREQUENCY (GHz)
Bias Voltage & Current
Vee Range= -5 Vdc ± 10%
Vee (VDC)
-5
Iee (Typ.) (mA)
2
Iee (Max.) (mA)
5
Control Voltage
State
Low
High
Bias Condition
0 to -3V @ 35 μA Typ.
-5 to -4.2V @ 5 μA Typ.
Truth Table
Control Voltage Input
V1
16 dB
Low
Low
Low
Low
Low
Low
High
High
V2
8 dB
Low
Low
Low
Low
Low
High
Low
High
V3
4 dB
Low
Low
Low
Low
High
Low
Low
High
V4
2 dB
Low
Low
Low
High
Low
Low
Low
High
V5
1 dB
Low
Low
High
Low
Low
Low
Low
High
V6
0.5 dB
Low
High
Low
Low
Low
Low
Low
High
Attenuation
State
RF1 - RF2
Reference
I.L.
0.5 dB
1 dB
2 dB
4 dB
8 dB
16 dB
31.5 dB
Any Combination of the above states will provide an attenuation
approximately equal to the sum of the bits selected.
5 - 100
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. Specifications 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.
For price, delivery, and to place orders: Analog Devices, Inc.,
For price, delivery, and to place orders, please contact Hittite
Way, P.O. Box 9106, Norwood, MA 02062-9106
Microwave Corporation:
One Technology
20 Alpha Road, Chelmsford, MA 01824 Phone:
Phone: 781-329-4700 • Order online at www.analog.com
978-250-3343 Fax: 978-250-3373
Application Support: Phone: 1-800-ANALOG-D
Order On-line at www.hittite.com
HMC424G16
v04.0709
0.5dB LSB GaAs MMIC 6-BIT DIGITAL
ATTENUATOR, DC - 3 GHz
Absolute Maximum Ratings
Control Voltage (V1 to V6)
Bias Voltage (Vee)
Channel Temperature
Thermal Resistance
Storage Temperature
Operating Temperature
RF Input Power (0.5 - 13.0 GHz)
Vee - 0.5 Vdc
-7 Vdc
150 °C
330 °C/W
-65 to + 150 °C
-55 to +85 °C
+25 dBm
5
ATTENUATORS - DIGITAL - SMT
5 - 101
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
Outline Drawing
NOTES:
1. PACKAGE MATERIAL: ALUMINA LOADED BOROSILICATE GLASS.
2. LEADS, BASE, COVER MATEIRAL: KOVARTM (#7052 CORNING).
3. PLATING: ELECTROLYTIC GOLD 50 MICROINCHES MIN.,
OVER ELECTROLYTIC NICKEL 75 MICROINCHES MIN.
4. ALL DIMENSIONS ARE IN INCHES [MILLIMETERS].
5. TOLERANCES: 0.005 [.013] UNLESS OTHERWISE SPECIFIED.
6. CHARACTERS TO BE HELVETICA MEDIUM .030 HIGH,
BLACK INK, LOCATED APPROX. AS SHOWN.
7. ALL GROUND LEADS AND GROUND PADDLE MUST BE SOLDERED
TO PCB RF GROUND.
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. Specifications 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.
For price, delivery, and to place orders: Analog Devices, Inc.,
For price, delivery, and to place orders, please contact Hittite
Way, P.O. Box 9106, Norwood, MA 02062-9106
Microwave Corporation:
One Technology
20 Alpha Road, Chelmsford, MA 01824 Phone:
Phone: 781-329-4700 • Order online at www.analog.com
978-250-3343 Fax: 978-250-3373
Application Support: Phone: 1-800-ANALOG-D
Order On-line at www.hittite.com
HMC424G16
v04.0709
0.5dB LSB GaAs MMIC 6-BIT DIGITAL
ATTENUATOR, DC - 3 GHz
5
ATTENUATORS - DIGITAL - SMT
Pin Descriptions
Pin Number
Function
Description
Interface Schematic
1, 12-16
V1 - V6
See truth table and control voltage table.
2, 4-6, 8, 9, 11
GND
Package bottom must also be connected
to RF/DC ground.
These pins are DC coupled and matched to 50 Ohm.
Blocking capacitors are required if RF line is
not equal to 0V.
3, 10
RF1, RF2
7
Vee
Supply Voltage -5V ±10%
Suggested Driver Circuit
(One Circuit Required Per Bit Control Input)
Simple driver using inexpensive standard logic ICs provides fast switching using minimum DC current. * Recommended
value to suppress unwanted RF signals at V1 - V6 control lines.
5 - 102
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. Specifications 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.
For price, delivery, and to place orders: Analog Devices, Inc.,
For price, delivery, and to place orders, please contact Hittite
Way, P.O. Box 9106, Norwood, MA 02062-9106
Microwave Corporation:
One Technology
20 Alpha Road, Chelmsford, MA 01824 Phone:
Phone: 781-329-4700 • Order online at www.analog.com
978-250-3343 Fax: 978-250-3373
Application Support: Phone: 1-800-ANALOG-D
Order On-line at www.hittite.com
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