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PDF HMC468ALP3E Data sheet ( Hoja de datos )
| Número de pieza | HMC468ALP3E | |
| Descripción | 1dB LSB GaAs MMIC 3-BIT DIGITAL POSITIVE CONTROL ATTENUATOR | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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HMC468ALP3E
v00.1212
1dB LSB GaAs MMIC 3-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, DC - 6GHz
Typical Applications
The HMC468ALP3E is ideal for:
• Cellular; UMTS/3G Infrastructure
• Fixed Wireless & WLL
• Microwave Radio & VSAT
• Test Equipment
Features
1 dB LSB Steps to 7 dB
High IP3: +55 dBm
± 0.25 dB Typical Bit Error
Single Control Line Per Bit
Single +5V Supply
16 Lead 3x3 mm SMT Package: 9 mm2
Functional Diagram
General Description
The HMC468ALP3E is a broadband 3-bit GaAs
IC digital attenuators in a low cost leadless sur-
face mount package. Covering DC to 6.0 GHz,
the insertion loss is less than 1 dB typical up to 4
GHz. The attenuator bit values are 1 (LSB), 2 and 4
dB for a total attenuation of 7 dB. Attenuation accu-
racy is excellent at ±0.4 dB typical step error with an
IIP3 of +55 dBm. Three control voltage inputs, toggled
between 0 and +5V, are used to select each attenua-
tion state. A single Vdd bias of +5V is required.
Electrical Specifications, TA = +25° C, With Vdd = +5V & Vctl = 0/+5V
Parameter
Frequency (GHz)
Min.
Typ.
Max.
Insertion Loss
DC - 2.5 GHz
2.5 - 4.5 GHz
4.5 - 6.0 GHz
0.5 1.0
0.7 1.2
0.9 1.4
Attenuation Range
DC - 6 GHz
7
Return Loss (RF1 & RF2, All Atten. States)
DC - 6 GHz
20
Attenuation Accuracy:
(Referenced to Insertion Loss)
All States
1 - 4 dB States
5 - 7 dB States
DC - 2.5 GHz
2.5 - 6.0 GHz
2.5 - 6.0 GHz
± 0.2 + 2% of Atten. Setting Max.
± 0.3 + 3% of Atten. Setting Max.
± 0.4 + 4% of Atten. Setting Max.
Input Power for 0.1 dB Compression
0.25 - 6.0 GHz
26
Input Third Order Intercept Point
(Two-Tone Input Power= 0 dBm Each Tone)
0.25 - 6.0 GHz
55
Switching Characteristics
DC - 6 GHz
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
60
80
* Bypass capacitor connecting ACG1, ACG2 & ACG3 to RF ground required per pin description herein.
Units
dB
dB
dB
dB
dB
dB
dB
dB
dBm
dBm
ns
ns
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1 page  
HMC468ALP3E
v00.1212
1dB LSB GaAs MMIC 3-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, DC - 6GHz
Pin Descriptions
Pin Number
Function
1, 3, 4, 8,
9, 10, 12
N/C
2, 11
RF1, RF2
Description
These pins should be connected to PCB
RF ground to maximize performance.
This pin is DC coupled and matched to 50 Ohm.
Blocking capacitors are required
Interface Schematic
13 - 15
V1 - V3
5-7
16
ACG1 - ACG3
Vdd
GND
Application Circuit
See truth table and control voltage table.
External capacitor to ground is required.
Select value for lowest frequency of operation.
Place capacitor as close to pins as possible.
Supply Voltage
Package bottom has an exposed metal paddle
that must be connected to RF/DC ground.
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5 Page | ||
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