參數(shù)資料
型號(hào)： HMC271LP4E
廠商： HITTITE MICROWAVE CORP
元件分類： 衰減器
英文描述： 700 MHz - 3700 MHz RF/MICROWAVE VARIABLE ATTENUATOR, 3.3 dB INSERTION LOSS-MAX
封裝： 4 X 4 MM, ROHS COMPLIANT, LEADLESS, PLASTIC, SMT, QFN-24
文件頁數(shù)： 1/8頁
文件大?。?/td> 350K
代理商： HMC271LP4E
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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1 dB LSB GaAs MMIC 5-BIT SERIAL
CONTROL DIGITAL ATTENUATOR, 0.7 - 3.7 GHz
General Description
Features
Functional Diagram
1 dB LSB Steps to 31 dB
CMOS Compatible Serial Data Interface
SPI Compatible Serial Output
±0.4 dB Typical Bit Error
24 Lead 4x4mm QFN Package: 16mm2
Included in the HMC-DK004 Designer’s Kit
Electrical Specifications, T
A = +25° C, Vcc = +3V to +5V
Typical Applications
The HMC271LP4 & HMC271LP4E are broadband
5-bit positive control GaAs IC digital attenuators with
CMOS compatible serial-to-parallel drivers in low
cost leadless QFN 4x4 mm SMT packages. Covering
0.7 to 3.7 GHz, the insertion loss is typically less than
2.5 dB. The attenuator bit values are 1 (LSB), 2, 4, 8,
and 16 dB for a total attenuation of 31 dB. Accuracy
is excellent at ± 0.4 dB typical with an IIP3 of up to
+48 dBm. Five bit CMOS compatible serial control
words are used to select each attenuation state.
A single Vcc bias of +3V to +5V applied through an
external 5k Ohm resistor is required.
The HMC271LP4 / HMC271LP4E is ideal for:
Cellular/3G Infrastructure
Fixed Wireless, WiMax & WiBro
Test Instrumentation
Parameter
Frequency
Min.
Typical
Max.
Units
Insertion Loss
0.7 - 1.4 GHz
1.4 - 2.3 GHz
2.3 - 2.7 GHz
2.7 - 3.7 GHz
1.9
2.3
2.6
2.8
2.4
2.8
3.1
3.3
dB
Attenuation Range
0.7 - 3.7 GHz
31
dB
Return Loss (RF1 & RF2, All Atten. States)
0.7 - 1.4 GHz
1.4 - 2.7 GHz
2.7 - 3.7 GHz
12
15
16
dB
Attenuation Accuracy: (Referenced to Insertion Loss)
All Attenuation States
0.7 - 0.9 GHz
0.9 - 2.2 GHz
2.2 - 3.7 GHz
± (0.4 + 5% of Atten. Setting) Max
± (0.4 + 4% of Atten. Setting) Max
± (0.4 + 5% of Atten. Setting) Max
dB
Input Power for 0.1 dB Compression
Vcc = 5V
Vcc = 3V
0.7 - 3.7 GHz
24
22
dBm
Input Third Order Intercept Point
(Two-tone Input Power = 0 dBm Each Tone)
Vcc = 5V
Vcc = 3V
0.7 - 3.7 GHz
48
46
dBm
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (Latch Enable to 10/90% RF)
0.7 - 3.7 GHz
750
830
ns
HMC271LP4 / 271LP4E
v03.0809
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