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參數(shù)資料
| 型號(hào)： | HMC542LP4E |
| 廠商： | HITTITE MICROWAVE CORP |
| 元件分類(lèi)： | 衰減器 |
| 英文描述： | 0 MHz - 3000 MHz RF/MICROWAVE VARIABLE ATTENUATOR, 1.8 dB INSERTION LOSS-MAX |
| 封裝： | 4 X 4 MM, ROHS COMPLIANT, LEADLESS, PLASTIC, SMT, QFN-24 |
| 文件頁(yè)數(shù)： | 1/8頁(yè) |
| 文件大?。?/td> | 511K |
| 代理商： | HMC542LP4E |
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
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HMC542LP4 / 542LP4E
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
SERIAL CONTROL ATTENUATOR, DC - 3 GHz
v03.0809
Functional Diagram
Electrical Specifications, T
A = +25° C, with Vcc = +5V
the HMC542LP4(e) is ideal for:
Cellular/PCs/3G Infrastructure
IsM, MMDs, WLAn, WiMAX, & WiBro
Microwave radio & VsAt
test equipment and sensors
0.5 dB LsB steps to 31.5 dB
ttL/CMos Compatible serial Data Interface
sPI Compatible serial output
± 0.25 dB typical step error
single +5V supply
24 Lead 4x4mm QFn Package: 16mm
the HMC542LP4(e) is a broadband 6-bit GaAs IC
digital attenuator with a CMos compatible serial
to parallel driver in low cost leadless surface mount
package. this serial control digital attenuator incorp
rates off chip AC ground capacitors for near DC opera-
tion, making it suitable for a wide variety of rF and IF
applications. Covering DC to 3 GHz, the insertion loss
is 1.5 dB and 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 typi-
cal step error with an IIP3 of +45 dBm. six bit serial
control words 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
1.2
1.5
1.8
dB
Attenuation range
DC - 3 GHz
31.5
dB
return Loss (rF1 & rF2, All Atten. states)
DC - 3 GHz
17
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
DC - 1.0 GHz
1.0 - 2.2 GHz
2.2 - 3.0 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.
dB
Input Power for 0.1 dB Compression
0.1 - 3.0 GHz
20
dBm
Input third order Intercept Point
(two-tone Input Power= 0 dBm each tone)
0.1 - 1.5 GHz
1.5 - 3.0 GHz
35
45
dBm
switching Characteristics
trIse, tFALL (10/90% rF)
ton, toFF (50% CtL to 10/90% rF)
DC - 3 GHz
800
900
ns
Typical Applications
Features
General Description
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