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DIGITAL ATTENUATOR. HMC629LP4 Datasheet |
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v08.0112
Typical Applications
The HMC629LP4(E) is ideal for:
• Cellular/3G Infrastructure
• WiBro / WiMAX / 4G
• Microwave Radio & VSAT
• Test Equipment and Sensors
• IF & RF Applications
Functional Diagram
HMC629LP4 / 629LP4E
3 dB LSB GaAs MMIC 4-BIT
DIGITAL ATTENUATOR, DC - 6 GHz
Features
3 dB LSB Steps to 45 dB
Power-Up State Selection
Low Insertion Loss: 2.5 dB
TTL/CMOS Compatible, Serial, Parallel
or Latched Parallel Control
±0.25 dB Typical Step Error
Single +3V or +5V Supply
24 Lead 4x4mm SMT Package: 16mm2
General Description
The HMC629LP4(E) is a broadband 4-bit GaAs IC
Digital Attenuator in a low cost leadless SMT package.
This versatile digital attenuator incorporates off-chip
AC ground capacitors for near DC operation, making
it suitable for a wide variety of RF and IF applications.
The dual mode control interface is CMOS/TTL
compatible, and accepts either a three wire serial input
or a 4-bit parallel word. For applications which require
only 33 dB of attenuation range, the HMC629LP4(E)
provides excellent attenuation accuracy up to 10 GHz.
The HMC629LP4(E) is housed in a RoHS compliant
4x4 mm QFN leadless package, and requires no
external matching components.
Electrical Specifications,
TA = +25° C, 50 Ohm System, with Vdd = +5V & Vctl = 0/+5V (Unless Otherwise Noted)
Parameter
Frequency (GHz)
Min.
Typ.
Max.
Insertion Loss
DC - 6
2.5 5
Attenuation Range
Return Loss (ATTIN, ATTOUT, All Atten. States)
Attenuation Accuracy: (Referenced to Insertion Loss)
All Attenuation States
DC - 6
DC - 6
45
17
± (0.50 + 5% of Atten. Setting) Max.
Units
dB
dB
dB
dB
dB
dB
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HMC629* PRODUCT PAGE QUICK LINKS
Last Content Update: 02/23/2017
COMPARABLE PARTS
View a parametric search of comparable parts.
EVALUATION KITS
• HMC629LP4 Evaluation Board
DOCUMENTATION
Data Sheet
• HMC629 Data Sheet
TOOLS AND SIMULATIONS
• HMC629 S-Parameter
REFERENCE MATERIALS
Quality Documentation
• Package/Assembly Qualification Test Report: LP4, LP4B,
LP4C, LP4K (QTR: 2013-00487 REV: 04)
• Semiconductor Qualification Test Report: PHEMT-D (QTR:
2013-00254)
DESIGN RESOURCES
• HMC629 Material Declaration
• PCN-PDN Information
• Quality And Reliability
• Symbols and Footprints
DISCUSSIONS
View all HMC629 EngineerZone Discussions.
SAMPLE AND BUY
Visit the product page to see pricing options.
TECHNICAL SUPPORT
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number.
DOCUMENT FEEDBACK
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v08.0112
Insertion Loss vs. Temperature
0
-5
-10
+25 C
+85 C
-15 -40 C
-20
0
2468
FREQUENCY (GHz)
Input Return Loss
(Only Major States are Shown)
0
-5
-10
-15
-20
-25
-30
-35
-40
0
246
FREQUENCY (GHz)
8
10
10
Bit Error vs. Attenuation State
10
8
6
4
2
0
-2
-4
-6
-8
-10
0
(1, 2, 4, 5) GHz
(7, 8, 10) GHz
5 10 15 20 25 30 35 40 45
ATTENUATION STATE (dB)
HMC629LP4 / 629LP4E
3 dB LSB GaAs MMIC 4-BIT
DIGITAL ATTENUATOR, DC - 6 GHz
Normalized Attenuation
(Only Major States are Shown)
0
-10
-20
-30
-40
-50
-60
0
246
FREQUENCY (GHz)
8
10
Output Return Loss
(Only Major States are Shown)
0
-5
-10
-15
-20
-25
-30
-35
-40
0
246
FREQUENCY (GHz)
8
10
Bit Error vs. Frequency
(Only Major States are Shown)
6
4
2
0
-2
-4
ALL BITS
-6
0246
FREQUENCY (GHz)
BIT 24
8 10
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2
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