For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, 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
AT TENUATORS - SM T
1
HMC939LP4 / 939LP4E
v 01.12 11
1.0 dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, 0.1 - 33 GHz
Electrical Specications, TA = +25° C, With Vdd = +5V, Vss = -5V, P0 - P4 = 0/ +5V
The HMC939LP4 / HMC939LP4E is ideal for:
• Fiber Optics & Broadband Telecom
• Microwave Radio & VSAT
• Military Radios, Radar & ECM
• Space Applications
• Sensors
• Test & Measurement Equipment
1.0 dB LSB Steps to 31 dB
Single Positive Control Line Per Bit
±1.0 dB Typical Bit Error
High Input IP3: +43 dBm
16mm2 Leadless SMT Plastic Package
The HMC939LP4 & HMC939LP4E are broadband
5-bit GaAs IC digital attenuators in low cost leadless
surface mount packages. Covering 0.1 to 33.0 GHz,
the insertion loss is less than 5 dB typical. The attenu-
ator bit values are 1.0 (LSB), 2, 4, 8, 16 for a total atten-
uation of 31 dB. Attenuation accuracy is excellent
at ±0.4 dB typical step error with an IIP3 of +43 dBm.
Five control voltage inputs, toggled between +5V and
0V, are used to select each attenuation state.
Parameter Frequency (GHz) Min. Typ. Max. Units
Insertion Loss
0.1 - 18.0 GHz
18.0 - 26.5 GHz
26.5 - 33.0 GHz
4.0
5.5
6.5
5.5
7. 0
8.5
dB
dB
dB
Attenuation Range 0.1 - 33.0 GHz 31 dB
Return Loss (RF1 & RF2, All Atten. States) 0.1 - 33.0 GHz 12 dB
Attenuation Accuracy: (Referenced to Insertion Loss) 1.0 - 15 dB States
16 - 31 dB States
16 - 31 dB States
0.1 - 33.0 GHz
0.1 - 20.0 GHz
20.0 - 33.0 GHz
± (0.5 + 5%) of Atten. Setting Max
± (0.5 + 5%) of Atten. Setting Max
± (0.6 + 8%) of Atten. Setting Max
dB
dB
dB
Input Power for 0.1 dB Compression 0.1 - 0.5 GHz
0.5 - 33.0 GHz
20
25
dBm
dBm
Input Third Order Intercept Point
(Two-Tone Input Power= 0 dBm Each Tone)
0.1 - 0.5 GHz
0.5 - 33.0 GHz
40
43
dBm
dBm
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON/tOFF (50% CTL to 10/90% RF)
0.1 - 33.0 GHz
60
90
ns
ns
Idd 0.1 - 33.0 GHz 2.5 4.5 6.5 mA
Iss 0.1 - 33.0 GHz -7. 0 -5.0 -3.0 mA
General Description
Features
Functional Diagram
Typical Applications
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