HMC424LH5
v00.0805
0.5dB LSB GaAs MMIC 6-BIT DIGITAL
ATTENUATOR, DC - 13 GHz
Typical Applications
Features
0.5 dB LSB Steps to 31.5 dB
Single Control Line Per Bit
+/- 0.3 dB Typical Bit Error
Hermetic SMT Package, 25mm
2
Screening to MIL-PRF-38535 (Class B or S) Available
6
ATTENUATORS - SMT
The HMC424LH5 is ideal for:
鈥?Telecom Infrastructure
鈥?Military Radio, Radar & ECM
鈥?Space Systems
鈥?Test Instrumentation
Functional Diagram
General Description
The HMC424LH5 is a broadband 6-bit GaAs MMIC
digital attenuator housed in a hermetic SMT leadless
package. Covering DC to 13 GHz, the insertion loss is
less than 3.5 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 鹵 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 frequencies down to DC. The
HMC424LH5 is compatible with standard and lead free
surface mount manufacturing techniques and is suit-
able for high reliability military, industrial and space
applications.
Electrical Specifications,
T
A
= +25擄 C, With Vee = -5V & VCTL= 0/-5V
Parameter
Insertion Loss
Attenuation Range
Return Loss (RF1 & RF2, All Atten. States)
Attenuation Accuracy: (Referenced to Insertion Loss)
0.5 - 16.5 dB States
17 - 31.5 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)
REF State
All Other States
DC - 13.0 GHz
DC - 13.0 GHz
1.0 - 13.0 GHz
1.0 - 13.0 GHz
DC - 13.0 GHz
30
50
ns
ns
鹵 0.4 + 4% of Atten. Setting Max
鹵 0.5 + 5% of Atten. Setting Max
22
46
32
dB
dB
dBm
dBm
dBm
Frequency (GHz)
DC - 4.0 GHz
4.0 - 8.0 GHz
8.0 - 13.0 GHz
DC - 13.0 GHz
DC - 13.0 GHz
Min.
Typ.
2.7
3.3
4.2
31.5
12
Max.
3.2
3.8
4.7
Units
dB
dB
dB
dB
dB
6 - 114
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
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