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
ATTENUATORS - DIGITAL - SMT
5
5 - 116
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, 2.2 - 8.0 GHz
Functional Diagram
Electrical Speci cations,
T
A
= +25° C, With Vdd = +5V & Vctl = 0/+5V (Unless Otherwise Noted)
The HMC425LP3 / HMC425LP3E is ideal for:
• WLAN & Point-to-Multi-Point
• Fiber Optics & Broadband Telecom
• Microwave Radio & VSAT
• Military
0.5 dB LSB Steps to 31.5 dB
Single Control Line Per Bit
± 0.5 dB Typical Bit Error
Single +5V Supply
3x3 mm SMT Package
The HMC425LP3 & HMC425LP3E are broadband
6-bit GaAs IC digital attenuators in low cost leadless
surface mount packages. Covering 2.2 to 8.0 GHz,
the insertion loss is less then 3.8 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.
Parameter
Frequency
(GHz)
Min. Typ. Max. Units
Insertion Loss
2.2 - 6.0 GHz
6.0 - 8.0 GHz
3.5
3.8
3.8
4.3
dB
dB
Attenuation Range 2.2 - 8.0 GHz 31.5 dB
Return Loss (RF1 & RF2, All Atten. States) 2.2 - 8.0 GHz 15 dB
Attenuation Accuracy:
(Referenced to Insertion Loss)
All States 2.2 - 8.0 GHz ± 0.5 + 5% of Atten. Setting Max. dB
Input Power for 0.1 dB Compression
Vdd = 5V
Vdd = 3V
2.2 - 8.0 GHz
22
19
dBm
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
2.2 - 8.0 GHz
45
35
dBm
dBm
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
2.2 - 8.0 GHz
160
180
ns
ns
HMC425LP3 / 425LP3E
v03.0409
Typical Applications Features
General Description
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
For price, delivery, and to place orders: Analog Devices, Inc.,
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
