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PDF HMC939 Data sheet ( Hoja de datos )
| Número de pieza | HMC939 | |
| Descripción | 1.0 dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de HMC939 (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
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v01.0511
Typical Applications
The HMC939 is ideal for:
• Fiber Optics & Broadband Telecom
• Microwave Radio & VSAT
• Military Radios, Radar & ECM
• Space Applications
HMC939
1.0 dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, 0.1 - 40 GHz
Features
1.0 dB LSB Steps to 31 dB
Single Positive Control Line Per Bit
±1.0 dB Typical Bit Error
High Input IP3: +43 dBm
Die Size: 2.29 x 0.95 x 0.1 mm
Functional Diagram
General Description
The HMC939 die is a broadband 5-bit GaAs IC
digital attenuator MMIC chip. Covering 0.1 to 40 GHz,
the insertion loss is less than 5 dB typical. The
attenuator bit values are 1.0 (LSB), 2, 4, 8, 16 for a
total attenuation of 31 dB. Attenuation accuracy is
excellent at less than ±1.0 dB typical step error with
an IIP3 of +43 dBm. Five control voltage inputs,
toggled between +5V and 0V, are used to select each
attenuation state.
0-1
Electrical Specifications, TA = +25° C, With Vdd = +5V, Vss = -5V & VCTL = 0/ +5V
Parameter
Frequency (GHz)
Min.
Typ. Max.
Insertion Loss
0.1 - 18 GHz
18 - 40 GHz
3.5 5.0
6.0 7.5
Attenuation Range
0.1 - 40 GHz
31
Return Loss (RF1 & RF2, All Atten. States)
0.1 - 40 GHz
12
Attenuation Accuracy: (Referenced to Insertion Loss)
1.0 - 15 dB States
16 - 31 dB States
0.1 - 40 GHz
0.1 - 40 GHz
± 0.5 + 5% of Atten. Setting Max
± 0.6 + 6% of Atten. Setting Max
Input Power for 0.1 dB Compression
0.1 - 0.5 GHz
0.5 - 40.0 GHz
20
25
Input Third Order Intercept Point
(Two-Tone Input Power= 0 dBm Each Tone)
0.1 - 0.5 GHz
0.5 - 40.0 GHz
40
43
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON/tOFF (50% CTL to 10/90% RF)
0.1 - 40 GHz
60
90
Idd
0.1 - 40 GHz
3
57
Iss
0.1 - 40 GHz
-4
-6 -8
Units
dB
dB
dB
dB
dB
dB
dBm
dBm
dBm
dBm
ns
ns
mA
mA
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1 page  
Pad Descriptions
Pad Number
Function
GND
1, 9 RF1, RF2
2 Vss
v01.0511
HMC939
1.0 dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, 0.1 - 40 GHz
Description
Die bottom must be connected to RF ground.
This pad is DC coupled and matched to 50 Ohm. Blocking
capacitors are required if RF line potential is not equal to 0V.
Negative Bias -5V
Interface Schematic
3-7
P0 - P4
See truth table and control voltage table.
8 Vdd
Positive Bias +5V
Assembly Diagram
0-5
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5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet HMC939.PDF ] | |
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