5
5 - 164
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
HMC539LP3 / 539LP3E
0.25 dB LSB GaAs MMIC 5-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, DC - 4 GHz
v00.0605
Functional Diagram
Electrical Specifi cations,
T
A
= +25?C, With Vdd = +5V & Vctl = 0/+5V (Unless Otherwise Noted)
The HMC539LP3 / HMC539LP3E is ideal for both RF
and IF applications:
" Cellular Infrastructure
" ISM, MMDS, WLAN, WiMAX, WiBro
" Microwave Radio & VSAT
" Test Equipment and Sensors
0.25 dB LSB Steps to 7.75 dB
?0.05 dB Typical Step Error
Low Insertion Loss: 0.7 dB
High IP3: +50 dBm
Single Control Line Per Bit
TTL/CMOS Compatible Control
Single +5V Supply
3x3 mm SMT Package
The HMC539LP3 & HMC539LP3E are broadband
5-bit GaAs IC digital attenuators in low cost lead-
less surface mount packages. This single positive
control line per bit digital attenuator utilizes an off
chip AC ground capacitor for near DC operation,
making it suitable for a wide variety of RF and IF
applications. Covering DC to 4 GHz, the insertion loss
is less than 0.7 dB typical. The attenuator bit values
are 0.25 (LSB), 0.5, 1, 2, and 4 dB for a total attenu-
ation of 7.75 dB. Attenuation accuracy is excellent
at ? 0.05 dB typical step error. The attenuator also
features a high IIP3 of +50 dBm. Five TTL/CMOS
control inputs are used to select each attenuation
state. A single Vdd bias of +5V is required.
Parameter
Frequency (GHz)
Min.
Typ.
Max.
Units
Insertion Loss
DC - 1.5 GHz
1.5 - 3.0 GHz
3.0 - 4.0 GHz
0.7
1.0
1.3
1.0
1.3
1.7
dB
dB
dB
Attenuation Range
DC - 4 GHz
7.75
dB
Return Loss (RF1 & RF2, All Atten. States)
DC - 3 GHz
3.0 - 4.0 GHz
25
20
dB
dB
Attenuation Accuracy:
(Referenced to Insertion Loss)
All States
DC - 3 GHz
3.0 - 4.0 GHz
?(0.2 + 2% of Atten. Setting) Max.
?(0.2 + 4% of Atten. Setting) Max.
dB
dB
Input Power for 0.1 dB Compression
0.1 - 4.0 GHz
28
dBm
Input Third Order Intercept Point
(Two-Tone Input Power= 0 dBm Each Tone)
0.1 - 4.0 GHz
50
dBm
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
DC - 4 GHz
48
52
ns
ns
Typical Applications
Features
General Discription
发布紧急采购，3分钟左右您将得到回复。
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