HMC629LP4 Datasheet, PDF (1/8 Pages) Hittite Microwave Corporation – 3 dB LSB GaAs MMIC 4-BIT DIGITAL ATTENUATOR, DC - 6 GHz

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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,
T_A = +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
8-1
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: [phone] Fax: [phone] Order On-line at www.hittite.com
Application Support: Phone: [phone] or [e-mail]