HMC-C025
v07.0711
0.5dB LSB GaAs MMIC 6-BIT DIGITAL
ATTENUATOR MODULE, DC - 13 GHz
Features
0.5 dB LSB Steps to 31.5 dB
Single Control Line Per Bit
2
± 0.3 dB Typical Bit Error
CMOS Compatible Control
Hermetically Sealed Module
Field Replaceable SMA Connectors
-55 °C to +85 °C Operating Temperature
Typical Applications
thꢀ HMC-C025 iꢁ idꢀal fꢂꢃ:
• Telecom Infrastructure
• Military Radio, Radar & ECM
• Space Systems
General Description
The HMC-C025 is a DC to 13 GHz 6-bit GaAs IC
Digital Attenuator housed in a miniature hermetic
module. This wideband attenuator features 4 dB typ-
ical insertion loss, +38 dBm input IP3, and bit values
of 0.5 (LSB), 1, 2, 4, 8, and 16 dB for a total attenuation
of 31.5 dB. Attenuation accuracy is excellent with
0.3 dB typical step error. Six control voltage inputs,
toggled between 0 and +5V, are used to select each
attenuation state. A single Vdc bias of -5V allows
operation at frequencies down to DC. Removable
SMA connectors can be detached to allow direct
connection of the module’s I/O pins to a microstrip or
coplanar circuit.
• Test Instrumentation
Functional Diagram
Electrical Specifications, TA = +25° C, with Vdc = -5V & VCTL = 0/+5V
Parameter
Frequency (GHz)
Min.
Typ.
Max.
Units
DC - 4 GHz
4 - 8 GHz
8 - 11 GHz
11 - 13 GHz
3.2
4.2
5.0
5.5
3.7
4.7
5.5
6.0
dB
dB
dB
dB
Insertion Loss
Attenuation Range
DC - 13 GHz
DC - 13 GHz
31.5
dB
dB
Return Loss (RF1 & RF2, All Atten. States)
12
Attenuation Accuracy: (Referenced to Insertion Loss)
All States
DC - 3 GHz
3 - 10 GHz
3 - 10 GHz
10 - 13 GHz
± (0.2 + 3% of Atten. Setting) Max
± (0.4 + 3% of Atten. Setting) Max
± (0.4 + 4% of Atten. Setting) Max
± (0.6 + 10% of Atten. Setting) Max
dB
dB
dB
dB
0.5 - 27.5 dB
28.0 - 31.5 dB
All States
Input Power for 0.1 dB Compression
1 - 13 GHz
1 - 13 GHz
22
dBm
Input Third Order Intercept Point
(Two-Tone Input Power= 0 dBm Each Tone)
RF State
All Other States
46
38
dBm
dBm
Switching Characteristics
DC - 13 GHz
tRISE, tFALL (10/90% RF)
tON/tOFF (50% CTL to 10/90% RF)
22
45
ns
ns
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
For price, delivery, and to place orders: Analog Devices, Inc.,
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
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rights of third parties that may result from its use. Specifications subject to change without notice. No
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license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
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