HMC425_09 Datasheet, PDF (1/6 Pages) Hittite Microwave Corporation – 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, 2.4 - 8.0 GHz

HMC425
v02.0907
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, 2.4 - 8.0 GHz
1
Typical Applications
The HMC425 is ideal for:
• Fiber Optics & Broadband Telecom
• Microwave Radio & VSAT
• Military Radios, Radar, & ECM
• Space Applications
Features
0.5 dB LSB Steps to 31.5 dB
Single Control Line Per Bit
±0.5 dB Typical Bit Error
Die Size: 1.5 x 0.85 x 0.1 mm
Functional Diagram
General Description
The HMC425 die is a broadband 6-bit GaAs IC
digital attenuator MMIC chip. Covering 2.4 to 8 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 typical step error
with an IIP3 of +40 dBm. Six control 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,
T_A = +25° C, With Vdd = +5V & Vctl = 0/+5V (Unless Otherwise Noted)
Parameter
Frequency (GHz)
Insertion Loss
2.4 - 6.0 GHz
6.0 - 8.0 GHz
Attenuation Range
2.4 - 8.0 GHz
Return Loss (RF1 & RF2, All Atten. States)
2.4 - 8.0 GHz
Attenuation Accuracy: (Referenced to Insertion Loss)
All States 2.4 - 8.0 GHz
Input Power for 0.1 dB Compression
Vdd= 5V
Vdd= 3V
2.4 - 8.0 GHz
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
Switching Characteristics
2.4 - 8.0 GHz
Min.
Typ.
Max.
2.7
3.2
3.5
4.0
31.5
12
15
± 0.4 + 4% of Atten. Setting Max
22
19
45
35
tRISE, tFALL (10/90% RF)
160
tON/tOFF (50% CTL to 10/90% RF)
180
Units
dB
dB
dB
dB
dB
dBm
dBm
dBm
dBm
ns
ns
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For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: [phone] Fax: [phone]
Order On-line at www.hittite.com