HMC624LP4 / 624LP4E
v02.0807
0.5 dB LSB GaAs MMIC 6-BIT
DIGITAL ATTENUATOR, DC - 6 GHz
Typical Applications
The HMC624LP4(E) is ideal for:
• Cellular/3G Infrastructure
• WiBro / WiMAX / 4G
Features
0.5 dB LSB Steps to 31.5 dB
10
High Input IP3: +55 dBm
Low Insertion Loss: 2.2 dB @ 3.5 GHz
TTL/CMOS Compatible, Serial or Parallel Control
0.25 dB Typical Step Error
• Microwave Radio & VSAT
• Test Equipment and Sensors
• IF & RF Applications
Single +3V or +5V Supply
Compact 4x4mm SMT Package
Functional Diagram
General Description
The HMC624LP4(E) is a broadband 6-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 6 bit parallel word. The HMC624LP4(E) also
features a user selectable power up state and a serial
output port for cascading other Hittite serial controlled
components. The HMC624LP4(E) is housed in a
RoHS compliant 4x4 mm QFN leadless package, and
requires no external matching components.
Electrical Specifications,
TA = +25° C, with Vdd = +5V & Vctl = 0/+5V (Unless Otherwise Noted)
Parameter
Frequency (GHz)
Min.
Typ.
Max.
Units
DC - 3.0 GHz
3.0 - 6.0 GHz
1.8
2.8
2.4
3.8
dB
dB
Insertion Loss
Attenuation Range
31.5
15
dB
dB
Return Loss (ATTIN, ATTOUT, All Atten. States)
DC - 6.0 GHz
Attenuation Accuracy: (Referenced to Insertion Loss)
All Attenuation States
DC - 0.8 GHz
0.8 - 6.0 GHz
(0.10 + 5% of Atten. Setting) Max.
(0.30 + 3% of Atten. Setting) Max.
dB
dB
Input Power for 0.1 dB Compression
DC - 6.0 GHz
DC - 6.0 GHz
30
55
dBm
dBm
Input Third Order Intercept Point
(Two-Tone Input Power= 10 dBm Each Tone)
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
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