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PDF HMC472LP4 Data sheet ( Hoja de datos )
| Número de pieza | HMC472LP4 | |
| Descripción | 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL POSITIVE CONTROL ATTENUATOR | |
| Fabricantes | Hittite Microwave Corporation | |
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HMC472LP4
v00.0604
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, DC - 3.0 GHz
Typical Applications
9 The HMC472LP4 is ideal for both RF
and IF applications:
• Cellular; UMTS/3G Infrastructure
• ISM, MMDS, WLAN, WiMAX
• Microwave Radio & VSAT
• Test Equipment & Sensors
Functional Diagram
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Features
0.5 dB LSB Steps to 31.5 dB
Single Control Line Per Bit
TTL/CMOS Compatible Control
+/- 0.5 dB Typical Step Error
Single +5V Supply
4 mm x 4 mm x 1 mm SMT Package
General Description
The HMC472LP4 is a broadband 6-bit GaAs IC
digital attenuator in a low cost leadless surface
mount package. 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 ± 0.5 dB
typical step error with an IIP3 of +45 dBm. Six
TTL/CMOS control inputs are used to select
each attenuation state. A single Vdd bias of +5V
is required.
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. Max.
1.5 1.8
2.0 2.3
31.5
Return Loss (RF1 & RF2, All Atten. States)
DC - 3.0 GHz
15
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)
REF - 15.5 dB
16.0 - 31.5 dB
REF - 15.5 dB States
16.0 - 31.5 dB States
DC - 3.0 GHz
0.1 - 3.0 GHz
0.1 - 3.0 GHz
DC - 3.0 GHz
± (0.4 + 4% of Atten. Setting) Max.
± (0.5 + 4% of Atten. Setting) Max.
20
45
35
130
140
Units
dB
dB
dB
dB
dB
dB
dBm
dBm
dBm
ns
ns
9 - 144
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  
v00.0604
HMC472LP4
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
Application Circuit
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Package bottom has an exposed metal paddle that must also
be connected to RF/DC Ground.
9 - 148
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 HMC472LP4.PDF ] | |
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