GaAs MMIC. HMC425 Datasheet

HMC425 MMIC. Datasheet pdf. Equivalent

Part HMC425
Description 0.5 dB LSB GaAs MMIC
Feature v01.0402 MICROWAVE CORPORATION HMC425 Features 0.5 dB LSB Steps to 31.5 dB Single Control Line Per .
Manufacture Hittite Microwave Corporation
Datasheet
Download HMC425 Datasheet

v01.0402 MICROWAVE CORPORATION HMC425 Features 0.5 dB LSB S HMC425 Datasheet
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HMC425
v01.0402
HMC425
MICROWAVE CORPORATION
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, 2.4 - 8.0 GHz
Typical Applications
The HMC425 is ideal for:
2 Fiber Optics & Broadband Telecom
Microwave Radio & VSAT
Military Radios, Radar, & ECM
Space Applications
Functional Diagram
Features
0.5 dB LSB Steps to 31.5 dB
Single Control Line Per Bit
+/- 0.5 dB Typical Bit Error
Die Size: 0.85 mm x 1.5 mm x 0.1 mm
General Description
The HMC425 die is a broadband 6-bit GaAs IC
digital attenuator MMIC chip. Covering 2.4 to 8.0
GHz, the insertion loss is less then 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 ± 0.5 dB typi-
cal step error with an IIP3 of +40 dBm. Six con-
trol voltage inputs, toggled between 0 and +3 to
+5V, are used to select each attenuation state. A
single Vdd bias of +3 to +5V is required.
Electrical Specifications,
TA = +25° C, With Vdd = +5V & Vctl = 0/+5V (Unless Otherwise Noted)
Parameter
Frequency (GHz)
Min.
Typ.
Max.
Units
Insertion Loss
2.4 - 6.0 GHz
6.0 - 8.0 GHz
2.7 3.2 dB
3.5 4.0 dB
Attenuation Range
2.4 - 8.0 GHz
31.5
dB
Return Loss (RF1 & RF2, All Atten. States)
2.4 - 8.0 GHz 12 15
dB
Attenuation Accuracy: (Referenced to Insertion Loss)
All States
2.4 - 8.0 GHz
± 0.4 + 4% of Atten. Setting Max dB
Input Power for 0.1 dB Compression
Vdd= 5V
Vdd= 3V
2.4 - 8.0 GHz
22 dBm
19 dBm
Input Third Order Intercept Point
(Two-Tone Input Power= 0 dBm Each Tone)
REF - 16.0 dB States
16.5 - 31.5 dB States
2.4 - 8.0 GHz
45 dBm
35 dBm
Switching Characteristics
2.4 - 8.0 GHz
tRISE, tFALL (10/90% RF)
tON/tOFF (50% CTL to 10/90% RF)
160 ns
180 ns
2 - 14
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com



HMC425
v01.0402
HMC425
MICROWAVE CORPORATION
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, 2.4 - 8.0 GHz
InseGrtiaoAn sLoMssMIC SUB-HARMONICALLY R(POeUntlyuMMrnPajLoEroSDstastMeRsFIaX1re,ESRRhFo2wn1)7 - 25 GHz
0
-1
-2
-3
-4
-5
-6
-7
+25 C
-8 +85 C
-55 C
-9
-10
1 2 3 4 5 6 7 8 9 10
FREQUENCY (GHz)
0
0.5 dB
-5
1 dB
2 dB
4 dB
8 dB
16 dB
-10 31.5 dB
-15
-20
-25
1 2 3 4 5 6 7 8 9 10
FREQUENCY (GHz)
Normalized Attenuation
(Only Major States are Shown)
0
-5
-10
-15
-20 0.5 dB
1 dB
-25
2 dB
4 dB
8 dB
16 dB
-30 31.5 dB
-35
1 2 3 4 5 6 7 8 9 10
FREQUENCY (GHz)
Bit Error vs. Frequency
(Only Major States are Shown)
2
1.5 0.5 dB
1 dB
1
2 dB
4 dB
8 dB
0.5
16 dB
31.5 dB
0
-0.5
-1
-1.5
-2
1 2 3 4 5 6 7 8 9 10
FREQUENCY (GHz)
Bit Error vs. Attenuation State
2
1.5 2.4 GHz
3.5 GHz
1 5.5 GHz
8.0 GHz
0.5
0
-0.5
-1
-1.5
-2
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32
ATTENUATION STATE (dB)
Relative Phase vs. Frequency
(Only Major States are Shown)
80
60
0.5 dB
1 dB
2 dB
4 dB
40 8 dB
16 dB
31.5 dB
20
0
-20
-40
1 2 3 4 5 6 7 8 9 10
FREQUENCY (GHz)
2
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
2 - 15





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