v00.0202
MICROWAVE CORPORATION
HMC425LP3
Features
0.5 dB LSB Steps to 31.5 dB
Single Control Line Per Bit
+/- 0.5 dB Typical Bit Error
Single +5V Supply
3 mm x 3 mm x 1 mm SMT Package
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, 2.4 - 8.0 GHz
Typical Applications
The HMC425LP3 is ideal for:
9
ATTENUATORS - SMT
•
WLAN & Point-to-Multi-Point
•
Fiber Optics & Broadband Telecom
•
Microwave Radio & VSAT
•
Military
Functional Diagram
General Description
The HMC425LP3 is a broadband 6-bit GaAs IC
digital attenuator in a low cost leadless surface
mount package. Covering 2.4 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. Attenua-
tion accuracy is excellent at ± 0.5 dB typical step
error with an IIP3 of +40 dBm. Six control volt-
age 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)
2.4 - 6.0 GHz
6.0 - 8.0 GHz
2.4 - 8.0 GHz
2.4 - 8.0 GHz
All States
Vdd = 5V
Vdd = 3V
REF - 16.0 dB States
16.5 - 31.5 dB States
2.4 - 8.0 GHz
11
Min.
Typ.
3.0
3.8
31.5
15
Max.
3.5
4.3
Units
dB
dB
dB
dB
dB
dBm
dBm
dBm
dBm
Insertion Loss
Attenuation Range
Return Loss (RF1 & RF2, All Atten. States)
Attenuation Accuracy:
(Referenced to Insertion Loss)
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)
± 0.5 + 5% of Atten. Setting Max.
22
19
45
35
2.4 - 8.0 GHz
2.4 - 8.0 GHz
2.4 - 8.0 GHz
160
180
ns
ns
9 - 92
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
HITTITE [ HITTITE MICROWAVE CORPORATION ]
