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PDF HMC424ALP3E Data sheet ( Hoja de datos )
| Número de pieza | HMC424ALP3E | |
| Descripción | 0.5dB LSB GaAs MMIC 6-BIT DIGITAL ATTENUATOR | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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v00.1113
Typical Applications
The HMC424ALP3E is ideal for:
• Basestation Infrastructure
• Fiber Optics & Broadband Telecom
• Microwave & VSAT Radios
• Military & Space
• Test Instrumentation
Functional Diagram
HMC424ALP3E
0.5dB LSB GaAs MMIC 6-BIT DIGITAL
ATTENUATOR, DC - 13 GHz
Features
0.5 dB LSB Steps to 31.5 dB
Single Control Line Per Bit
± 0.5 dB Typical Bit Error
9mm2 Leadless SMT Plastic Package
General Description
The HMC424ALP3E is a broadband 6-bit GaAs IC
digital attenuator in low cost leadless surface mount
package. Covering DC to 13 GHz, the insertion loss
is less then 4 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
± 0.5 dB typical step error with an IIP3 of +38 dBm.
Six control voltage inputs, toggled between 0 and
-5V, are used to select each attenuation state.
A single Vee bias of -5V allows operation at
frequencies down to DC.
Electrical Specifications, TA = +25° C, With Vee = -5V & VCTL= 0/-5V
Parameter
Frequency (GHz)
Min.
Insertion Loss
DC - 4 GHz
4.0 - 8.0 GHz
8.0 - 13.0 GHz
Attenuation Range
DC - 13.0 GHz
Return Loss (RF1 & RF2, All Atten. States)
DC - 13.0 GHz
Typ.
2.8
3.3
3.9
31.5
13
Max.
3.3
3.8
4.4
Attenuation Accuracy: (Referenced to Insertion Loss)
Input Power for 0.1 dB Compression
Input Third Order Intercept Point
(Two-Tone Input Power= +10 dBm Each Tone)
Switching Characteristics
0.5 - 31.5 dB States
REF State
All Other States
DC - 13.0 GHz
1.0 - 13.0 Ghz
1.0 - 13.0 Ghz
DC - 13.0 GHz
± (0.3 + 5% of Atten. Setting) Max
23
45
42
Units
dB
dB
dB
dB
dB
dB
dBm
dBm
dBm
tRISE, tFALL (10/90% RF)
tON/tOFF (50% CTL to 10/90% RF)
30 ns
50 ns
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1 page  
v00.1113
HMC424ALP3E
0.5dB LSB GaAs MMIC 6-BIT DIGITAL
ATTENUATOR, DC - 13 GHz
Pin Description
Pad Number
Function
1, 3, 10, 12
GND
2, 11
RFIN, RFOUT
Description
Package bottom has an exposed metal paddle that
must also be connected to RF ground
This pin is DC coupled and matched to 50 Ohm. Blocking
capacitors are required if RF line potential is not equal to 0V.
Interface Schematic
4, 5, 6, 7, 8, 9
V6 - V1
See truth table and control voltage table.
13, 14, 16
15
N/C
VEE
This pin should be connected to PCB RF
ground to maximize performance
Supply Voltage -5V ± 10%
Suggested Driver Circuit (One Circuit Required Per Bit Control Input)
Simple driver using inexpensive standard logic ICs provides fast
switching using minimum DC current.
* Recommended value to suppress unwanted RF signals at V1 -
V6 control lines.
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5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet HMC424ALP3E.PDF ] | |
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