0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, 2.2 - 8.0 GHz
v00.1115
HMC425ALP3
/
425ALP3E
1
ATTENUATORS - DIGITAL - SMT
Typical Applications
The HMC425ALP3 / HMC425ALP3E is ideal for:
• WLAN & Point-to-Multi-Point
• Fiber Optics & Broadband Telecom
• Microwave Radio & VSAT
• Military
Features
0.5 dB LSB Steps to 31.5 dB
Single Control Line Per Bit
± 0.5 dB Typical Bit Error
Single +5V Supply
3x3 mm SMT Package
Electrical Specifi cations,
Parameter
Insertion Loss
Attenuation Range
T
A
= +25° C, With Vdd = +5V & Vctl = 0/+5V
(Unless Otherwise Noted)
Frequency
(GHz)
2.2 - 6.0 GHz
6.0 - 8.0 GHz
2.2 - 8.0 GHz
2.2 - 8.0 GHz
All States
Vdd = 5V
Vdd = 3V
REF - 16.0 dB States
16.5 - 31.5 dB States
2.2 - 8.0 GHz
2.2 - 8.0 GHz
2.2 - 8.0 GHz
2.2 - 8.0 GHz
160
180
ns
ns
Min.
Typ.
3.5
3.8
31.5
15
± 0.5 + 5% of Atten. Setting Max.
22
19
45
35
Max.
3.8
4.3
Units
dB
dB
dB
dB
dB
dBm
dBm
dBm
dBm
Return Loss (RF1 & RF2, All Atten. States)
Attenuation Accuracy:
(Referenced to Insertion Loss)
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)
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1
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.
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The HMC425ALP3 & HMC425ALP3E are broad-
band 6-bit GaAs IC digital attenuators in low cost
leadless surface mount packages. Covering 2.2 to
8. 0 G H z , the insertion loss is less then 3.8 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 +40 dBm. Six control
voltage inputs, toggled between 0 and +3 to +5V,
are used to select each attenuation state. A single Vdd
bias of +3 to +5V is required.
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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
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Functional Diagram
General Description
HMC425ALP3
/
425ALP3E
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, 2.2 - 8.0 GHz
Truth Table
Control Voltage Input
V1
16 dB
High
High
High
High
V2
8 dB
High
High
High
High
High
Low
High
Low
V3
4 dB
High
High
High
High
Low
High
High
Low
V4
2 dB
High
High
High
Low
High
High
High
Low
V5
1 dB
High
High
Low
High
High
High
High
Low
V6
0.5 dB
High
Low
High
High
High
High
High
Low
Attenua-
tion State
RF1 - RF2
Reference
I.L.
0.5 dB
1 dB
2 dB
4 dB
8 dB
16 dB
31.5 dB
v00.1115
Absolute Maximum Ratings
Control Voltage (V1 to V6)
Bias Voltage (Vdd)
Staorage Temperature
Operating Temperature
RF Input Power (2.4 - 8.0 GHz)
ESD Sensitivity (HBM)
Vdd +0.5 Vdc
+7.0 Vdc
-65 to +150 °C
-40 to +85 °C
+30 dBm
Class 1A
2
ATTENUATORS - DIGITAL - SMT
2
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
High
High
Low
Low
Outline Drawing
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NOTES:
1. LEADFRAME MATERIAL: COPPER ALLOY
2. DIMENSIONS ARE IN INCHES [MILLIMETERS]
3. LEAD SPACING TOLERANCE IS NON-CUMULATIVE
4. PAD BURR LENGTH SHALL BE 0.15mm MAXIMUM.
PAD BURR HEIGHT SHALL BE 0.05mm MAXIMUM.
5. PACKAGE WARP SHALL NOT EXCEED 0.05mm.
6. ALL GROUND LEADS AND GROUND PADDLE MUST BE
SOLDERED TO PCB RF GROUND.
7. REFER TO HITTITE APPLICATION NOTE FOR SUGGESTED
LAND PATTERN.
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
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in
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Any combination of the above states will provide an attenuation
approximately equal to the sum of the bits selected.
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