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PDF HMC540LP3 Data sheet ( Hoja de datos )
| Número de pieza | HMC540LP3 | |
| Descripción | 1 dB LSB GaAs MMIC 4-BIT DIG POSITIVE CONTROL ATTENUATOR | |
| Fabricantes | Hittite Microwave | |
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HMC540LP3 / 540LP3E
v00.0605
1 dB LSB GaAs MMIC 4-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, DC - 5.5 GHz
Typical Applications
Features
6 The HMC540LP3 / HMC540LP3E is ideal for both RF
1 dB LSB Steps to 15 dB
and IF applications:
+/- 0.2 dB Typical Step Error
• Cellular Infrastructure
Low Insertion Loss: 1.0 dB
• ISM, MMDS, WLAN, WiMAX, WiBro
• Microwave Radio & VSAT
• Test Equipment and Sensors
Functional Diagram
High IP3: +50 dBm
Single Control Line Per Bit
TTL/CMOS Compatible Control
Single +5V Supply
3x3 mm SMT Package
General Discription
The HMC540LP3 & HMC540LP3E are broadband
4-bit GaAs IC digital attenuators in low cost leadless
surface mount packages. This single positive control
line per bit digital attenuator utilizes off chip AC ground
capacitors for near DC operation, making it suitable for
a wide variety of RF and IF applications. Covering DC
to 5.5 GHz, the insertion loss is less than 1.0 dB typical.
www.DataSheet4U.com
The attenuator bit values are 1 (LSB), 2, 4 and 8 dB for
a total attenuation of 15 dB. Attenuation accuracy is
excellent at ± 0.2 dB typical step error. The attenuator
also features a IIP3 of +50 dBm. Four TTL/CMOS
control inputs are used to select each attenuation
state. A single Vdd bias of +5V is required.
6 - 170
Electrical Specifications,
TA = +25° C, With Vdd = +5V & Vctl = 0/+5V (Unless Otherwise Noted)
Parameter
Insertion Loss
Attenuation Range
Return Loss (RF1 & RF2, All Atten. States)
Attenuation Accuracy:
(Referenced to Insertion Loss)
Input Power for 0.1 dB Compression
Input Third Order Intercept Point
(Two-Tone Input Power= 0 dBm Each Tone)
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
All States
REF - 4 dB States
5 - 15 dB States
Frequency (GHz)
DC - 2.0 GHz
2.0 - 3.0 GHz
3.0 - 4.0 GHz
4.0 -5.5 GHz
DC - 5.5 GHz
DC - 3.5 GHz
3.5 - 5.5 GHz
DC - 1.0 GHz
1.0 - 4.0 GHz
4.0 - 5.0 GHz
5.0 - 5.5 GHz
0.1 - 5.5 GHz
0.1 - 5.5 GHz
DC -5.5 GHz
Min.
Typ. Max.
0.8 1.1
1.0 1.3
1.3 1.6
2.2 2.6
15
20
15
± (0.2 + 2% of Atten. Setting) Max.
± (0.2 + 3% of Atten. Setting) Max.
± (0.3 + 5% of Atten. Setting) Max.
± (0.4 + 8% of Atten. Setting) Max.
27
50
45
95
100
Units
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dBm
dBm
dBm
ns
ns
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
1 page  
HMC540LP3 / 540LP3E
v00.0605
1 dB LSB GaAs MMIC 4-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, DC - 5.5 GHz
6
Pin Descriptions
Pin Number
Function
1 Vdd
2, 11
RF1, RF2
3, 7, 9, 10, 12
N/C
4 - 6, 8
ACG1 - ACG4
Description
Supply Voltage.
This pin is DC coupled and matched to 50 Ohm.
Blocking capacitors are required.
Select value based on lowest frequency of operation.
These pins should be connected to PCB RF ground to
maximize performance.
External capacitor to ground is required. Select value for
lowest frequency of operation. Place capacitor as close
to pins as possible.
Interface Schematic
13 - 16
V1 - V4
See truth table and control voltage table.
GND
Application Circuit
Package bottom has an exposed metal paddle that must be
connected to RF/DC Ground.
Recommended Component Values
C1 - C3
1,000 pF ± 10%
C4, C5
330 pF ± 10%
6 - 174
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
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet HMC540LP3.PDF ] | |
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