For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
AttenuAtors - DIGItAL - sMt
1
HMC424LP3 / 424LP3E
0.5dB LSB GaAs MMIC 6-BIT DIGITAL
ATTENUATOR, DC - 13 GHz
v08.0809
Functional Diagram
Electrical Specications,
T
A
= +25° C, With Vee = -5V & VCTL= 0/-5V
The HMC424LP3 / HMC424LP3E is ideal for:
• Basestation Infrastructure
• Fiber Optics & Broadband Telecom
• Microwave & VSAT Radios
• Military & Space
• Test Instrumentation
0.5 dB LSB Steps to 31.5 dB
Single Control Line Per Bit
± 0.5 dB Typical Bit Error
9mm
2
Leadless SMT Plastic Package
The HMC424LP3 & HMC424LP3E are broadband
6-bit GaAs IC digital attenuators in low cost leadless
surface mount packages. Covering DC to 13 GHz, the
insertion loss is less then 4 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 between
0 and -5V, are used to select each attenuation state.
A single Vee bias of -5V allows operation at frequ-
encies down to DC.
Parameter Frequency (GHz) Min. Ty p. Max. Units
Insertion Loss
DC - 4 GHz
4.0 - 8.0 GHz
8.0 - 13.0 GHz
3.1
3.5
4.0
3.8
4.0
4.6
dB
dB
dB
Attenuation Range DC - 13.0 GHz 31.5 dB
Return Loss (RF1 & RF2, All Atten. States) DC - 13.0 GHz 9 12 dB
Attenuation Accuracy: (Referenced to Insertion Loss)
0.5 - 15.5 dB States
16 - 31.5 dB States
DC - 13.0 GHz
DC - 13.0 GHz
± (0.3 + 3% of Atten. Setting) Max
± (0.3 + 5% of Atten. Setting) Max
dB
dB
Input Power for 0.1 dB Compression 1.0 - 13.0 Ghz 22 dBm
Input Third Order Intercept Point
(Two-Tone Input Power= 0 dBm Each Tone)
REF State
All Other States
1.0 - 13.0 Ghz
46
32
dBm
dBm
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON/tOFF (50% CTL to 10/90% RF)
DC - 13.0 GHz
30
50
ns
ns
Typical Applications Features
General Description
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.,
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
