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HMC941

Description
100 MHz - 30000 MHz RF/MICROWAVE VARIABLE ATTENUATOR, 4.8 dB INSERTION LOSS-MAX
CategoryWireless rf/communication    Radio frequency and microwave   
File Size388KB,6 Pages
ManufacturerHittite Microwave(ADI)
Websitehttp://www.hittite.com/
Environmental Compliance
Download Datasheet Parametric View All

HMC941 Overview

100 MHz - 30000 MHz RF/MICROWAVE VARIABLE ATTENUATOR, 4.8 dB INSERTION LOSS-MAX

HMC941 Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
MakerHittite Microwave(ADI)
Reach Compliance Codecompli
ECCN codeEAR99
Nominal attenuation15.5 dB
Characteristic impedance50 Ω
structureCOMPONENT
Maximum input power (CW)26.99 dBm
Maximum insertion loss4.8 dB
JESD-609 codee4
Maximum operating frequency30000 MHz
Minimum operating frequency100 MHz
Maximum operating temperature85 °C
Minimum operating temperature-55 °C
RF/Microwave Device TypesVARIABLE ATTENUATOR
Terminal surfaceGold (Au)
HMC941
v00.0910
0.5 dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, 0.1 - 30 GHz
Features
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
Die Size: 2.29 x 0.95 x 0.1 mm
1
ATTENUATORS - DIGITAL - CHIP
Typical Applications
The HMC941 is ideal for:
• Fiber Optics & Broadband Telecom
• Microwave Radio & VSAT
• Military Radios, Radar & ECM
• Space Applications
Functional Diagram
General Description
The HMC941 die is a broadband 5-bit GaAs IC digi-
tal attenuator MMIC chip. Covering 0.1 to 30 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 less than ± 0.5 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.
Electrical Specifications,
T
A
= +25° C, With Vdd = +5V, Vss = -5V & VCTL = 0/ +5V
Parameter
Insertion Loss
Attenuation Range
Return Loss (RF1 & RF2, All Atten. States)
Attenuation Accuracy: (Referenced to Insertion Loss)
0.5 - 7.5 dB States
8 - 15.5 dB States
Input Power for 0.1 dB Compression
Input Third Order Intercept Point
(Two-Tone Input Power= 0 dBm Each Tone)
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON/tOFF (50% CTL to 10/90% RF)
Idd
Iss
0.1 - 30.0 GHz
0.1 - 30.0 GHz
3
-4
0.1 - 30.0 GHz
0.1 - 30.0 GHz
0.1 - 0.5 GHz
0.5 - 30.0 GHz
0.1 - 0.5 GHz
0.5 - 30.0 GHz
0.1 - 30.0 GHz
60
90
5
-6
7
-8
ns
ns
mA
mA
± 0.3 + 4% of Atten. Setting Max
± 0.3 + 5% of Atten. Setting Max
22
27
42
45
dB
dB
dBm
dBm
dBm
dBm
Frequency (GHz)
0.1 - 18.0 GHz
18.0 - 30.0 GHz
0.1 - 30.0 GHz
0.1 - 30.0 GHz
Min.
Typ.
2.5
4.0
15.5
15
Max.
3.5
4.8
Units
dB
dB
dB
dB
1-1
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
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