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
HMC941LP4 / 941LP4E
v00.0910
0.5 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 HMC941LP4 / HMC941LP4E is ideal for:
• Fiber Optics & Broadband Telecom
• Microwave Radio & VSAT
• Military Radios, Radar & ECM
• Space Applications
• Sensors
• Test & Measurement Equipment
0.5 dB LSB Steps to 15.5 dB
Single Positive Control Line Per Bit
±0.5 dB Typical Bit Error
High Input IP3: +45 dBm
16mm2 Leadless SMT Plastic Package
The HMC941LP4 & HMC941LP4E are broadband 5-bit
GaAs IC digital attenuators in low cost leadless sur-
face mount packages. Covering 0.1 to 33.0 GHz, the
insertion loss is less than 4 dB typical. The attenuator
bit values are 0.5 (LSB), 1, 2, 4, 8, for a total attenu-
ation of 15.5 dB. Attenuation accuracy is excellent
at ±0.3 dB typical step error with an IIP3 of +45 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
3.0
4.0
5.0
4.5
6.0
6.5
dB
dB
Attenuation Range 0.1 - 33.0 GHz 15.5 dB
Return Loss (RF1 & RF2, All Atten. States) 0.1 - 33.0 GHz 12 dB
Attenuation Accuracy: (Referenced to Insertion Loss)
0.5 - 7.5 dB States
8 - 15.5 dB States
0.1 - 33.0 GHz
0.1 - 33.0 GHz
± (0.3 + 4%) of Atten. Setting Max
± (0.3 + 8%) of Atten. Setting Max
dB
dB
Input Power for 0.1 dB Compression 0.1 - 0.5 GHz
0.5 - 33.0 GHz
22
27
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
42
45
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