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20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
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5 - 140
HMC472LP4 / 472LP4E
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, DC - 3.8 GHz
v06.1108
Functional Diagram
Electrical Specifi cations,
T
A
= +25?C, With Vdd = +5V & Vctl = 0/+5V (Unless Otherwise Noted)
The HMC472LP4(E) is ideal for:
" 3G Infrastructure & access points
" Cellular/3G, LTE & UMB
" WiMAX, WiBN & Fixed Wireless
" Test Equipment and Sensors
" GSM, WCDMA & TD-SCDMA
0.5 dB LSB Steps to 31.5 dB
Single Control Line Per Bit
TTL/CMOS Compatible Control
?0.25 dB Typical Step Error
Single +5V Supply
24 Lead Ceramic 4x4mm SMT Package: 16mm2
Included in the HMC-DK004 Designers Kit
The HMC472LP4 & HMC472LP4E are broadband
6-bit GaAs IC digital attenuators in low cost leadless
surface mount packages. This single positive control
line per bit digital attenuator incorporates off chip AC
ground capacitors for near DC operation, making it
suitable for a wide variety of RF and IF applications.
Covering DC to 3.8 GHz, the insertion loss is less
than 2.0 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 ?0.25 dB
typical step error with an IIP3 of +45 dBm. Six TTL/
CMOS control inputs are used to select each attenua-
tion 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 - 3.8 GHz
1.5
2.0
2.3
1.8
2.3
3
dB
dB
dB
Attenuation Range
DC - 3.8 GHz
31.5
dB
Return Loss (RF1 & RF2, All Atten. States)
DC - 3.8 GHz
15
dB
Attenuation Accuracy: (Referenced to Insertion
Loss)
All Attenuation States
0.5 - 3.5 dB States
4.0 - 31.5 dB States
All Attenuation States
All Attenuation States
DC - 1.0 GHz
1.0 - 2.2 GHz
1.0 - 2.2 GHz
2.2 - 3.0 GHz
3.0 - 3.8 GHz
?(0..20 + 3% of Atten. Setting) Max.
?(0.25 + 3% of Atten. Setting) Max.
?(0.15 + 4% of Atten. Setting) Max.
?(0.30 + 3% of Atten. Setting) Max
?(0.35 + 5% of Atten. Setting) Max.
dB
dB
dB
dB
dB
Input Power for 0.1 dB Compression
0.1 - 3.8 GHz
20
dBm
Input Third Order Intercept Point
(Two-Tone Input Power= 0 dBm Each Tone)
REF - 15.5 dB States
16.0 - 31.5 dB States
0.1 - 3.8 GHz
45
35
dBm
dBm
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
DC - 3.8 GHz
130
140
ns
ns
Typical Applications
Features
General Description
发布紧急采购，3分钟左右您将得到回复。
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