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PDF HMC472LP4E Data sheet ( Hoja de datos )
| Número de pieza | HMC472LP4E | |
| Descripción | 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL POSITIVE CONTROL ATTENUATOR | |
| Fabricantes | Hittite Microwave Corporation | |
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HMC472LP4 / 472LP4E
v03.0905
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, DC - 3.0 GHz
Typical Applications
Features
9 The HMC472LP4 / HMC472LP4E is ideal for both RF
0.5 dB LSB Steps to 31.5 dB
and IF applications:
Single Control Line Per Bit
• Cellular; UMTS/3G Infrastructure
TTL/CMOS Compatible Control
• ISM, MMDS, WLAN, WiMAX
+/- 0.25 dB Typical Step Error
• Microwave Radio & VSAT
Single +5V Supply
• Test Equipment and Sensors
4 mm x 4 mm x 1 mm SMT Package
Functional Diagram
General Description
The HMC472LP4 & HMC472LP4E are broadband 6-
bit GaAs IC digital attenuators in low cost leadless
surface mount packages. This single positive control
line per bit digital attenuator incorporates off chip AC
ground capacitors for near DC operation, making it
suitable for a wide variety of RF and IF applications.
Covering DC to 3.0 GHz, the insertion loss is less than
2.0 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 ± 0.25 dB
typical step error with an IIP3 of +45 dBm. Six TTL/
CMOS control inputs are used to select each attenua-
tion state. A single Vdd bias of +5V is required.
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Electrical Specifications,
TA = +25° C, With Vdd = +5V & Vctl = 0/+5V (Unless Otherwise Noted)
Parameter
Insertion Loss
Attenuation Range
Frequency (GHz)
DC - 1.5 GHz
1.5 - 3.0 GHz
DC - 3.0 GHz
Min.
Typ.
1.5
2.0
31.5
Max.
1.8
2.3
Return Loss (RF1 & RF2, All Atten. States)
DC - 3.0 GHz
15
Attenuation Accuracy: (Referenced to Insertion Loss)
All Attenuation States
0.5 - 3.5 dB States
4.0 - 31.5 dB States
All Attenuation States
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)
REF - 15.5 dB
States
16.0 - 31.5 dB
States
DC - 1.0 GHz
1.0 - 2.2 GHz
1.0 - 2.2 GHz
2.2 - 3.0 GHz
0.1 - 3.0 GHz
0.1 - 3.0 GHz
DC - 3.0 GHz
± (0.20 + 3% of Atten. Setting) Max.
± (0.25 + 3% of Atten. Setting) Max.
± (0.15 + 4% of Atten. Setting) Max.
± (0.30 + 3% of Atten. Setting) Max.
20
45
35
130
140
Units
dB
dB
dB
dB
dB
dB
dB
dB
dBm
dBm
dBm
ns
ns
9 - 152
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  
HMC472LP4 / 472LP4E
v03.0905
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, DC - 3.0 GHz
9
Pin Descriptions
Pin Number
1, 3, 5, 12,
14, 16, 17, 18
Function
N/C
2 Vdd
4, 15
RF1, RF2
6 - 11, 13
ACG1 - ACG7
Description
These pins should be connected to PCB RF ground to
maximize performance.
Supply Voltage.
This pin is DC coupled and matched to 50 Ohm.
Blocking capacitors are required. Select value based on
lowest frequency of operation.
External capacitor to ground is required. Select value for
lowest frequency of operation. Place capacitor as close
to pins as possible.
Interface Schematic
19 - 24
V1 - V6
See truth table and control voltage table.
GND
Package bottom has an exposed metal paddle that must also
be connected to RF/DC Ground.
Application Circuit
www.DataSheet4U.com
9 - 156
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 HMC472LP4E.PDF ] | |
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