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PDF HMC305LP4 Data sheet ( Hoja de datos )
| Número de pieza | HMC305LP4 | |
| Descripción | 0.5 dB LSB GaAs MMIC 5-BIT SERIAL CONTROL DIGITAL ATTENUATOR 0.7 - 3.8 GHz | |
| Fabricantes | Hittite Microwave Corporation | |
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HMC305LP4 / 305LP4E
www.DataSheet4U.com
v03.0809
0.5 dB LSB GaAs MMIC 5-BIT SERIAL
CONTROL DIGITAL ATTENUATOR, 0.7 - 3.8 GHz
5
Typical Applications
The HMC305LP4 / HMC305LP4E is ideal for:
• Cellular/3G Infrastructure
• Fixed Wireless, WiMax & WiBro
• Test Instrumentation
Features
0.5 dB LSB Steps to 15.5 dB
CMOS Compatible Serial Data Interface
SPI Compatible Serial Output
±0.3 dB Typical Bit Error
24 Lead 4x4mm QFN Package: 16mm2
Included in the HMC-DK004 Designer’s Kit
Functional Diagram
General Description
The HMC305LP4 & HMC305LP4E are broadband
5-bit positive control GaAs IC digital attenuators with
CMOS compatible serial-to-parallel drivers packaged
in leadless QFN 4x4 mm SMT packages. Covering
0.7 to 3.8 GHz, the insertion loss is typically less
than 1.5 to 2 dB. The attenuator bit values are 0.5
(LSB), 1, 2, 4, and 8 dB for a total attenuation of
15.5 dB. Attenuation accuracy is excellent at ±0.25
dB typical with an IIP3 of up to +52 dBm. Five bit
serial control words are used to select each attenuation
state. A single Vcc bias of +3V to +5V applied through
an external 5k Ohm resistor is required.
5 - 60
Electrical Specifications, TA = +25° C, Vcc = +3V to +5V
Parameter
Frequency
Min.
Insertion Loss
0.7 - 1.4 GHz
1.4 - 2.3 GHz
2.3 - 2.7 GHz
2.7 - 3.8 GHz
Attenuation Range
0.7 - 3.8 GHz
Return Loss (RF1 & RF2, All Atten. States)
0.7 - 1.4 GHz
1.4 - 2.3 GHz
2.3 - 2.7 GHz
2.7 - 3.8 GHz
Typical
1.2
1.5
1.8
2.0
15.5
17
18
19
15
Max.
1.5
2.0
2.3
2.5
Attenuation Accuracy: (Referenced to Insertion Loss)
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 (Latch Enable to 10/90% RF)
Vcc = 5V
Vcc = 3V
Vcc = 5V
Vcc = 3V
0.7 - 0.9 GHz
0.9 - 2.2 GHz
2.2 - 3.8 GHz
0.7 - 3.8 GHz
0.7 - 3.8 GHz
0.7 - 3.8 GHz
± (0.5 +5% of Atten. Setting) Max
± (0.3 +4% of Atten. Setting) Max
± (0.5 +5% of Atten. Setting) Max
25
23
52
48
750
830
Units
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dBm
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  
v03.0809
HMC305LP4 / 305LP4E
www.DataSheet4U.com
0.5 dB LSB GaAs MMIC 5-BIT SERIAL
CONTROL DIGITAL ATTENUATOR, 0.7 - 3.8 GHz
5
Pin Descriptions
Pin Number
Function
Description
Interface Schematic
1, 3, 4, 6, 10, 12, 13,
15, 16, 18
N/C
These pins should be connected to PCB RF ground to
maximize performance.
2, 17
RF1, RF2
This pin is DC coupled and matched to 50 Ohms
Blocking capacitors are required. Select value based
on lowest frequency of operation.
5 Serial Output
Serial data output. Serial input data
delayed by 8 clock cycles
7
8
9
11
14
19 - 24
Reset
Shift Clock
Latch Enable
Serial Input
See truth table, control voltage table and timing diagram.
Vcc
GND
Supply Voltage.
Package bottom has an exposed metal paddle that must also
be connected to RF/DC Ground.
5 - 64
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 8 Páginas | |
| PDF Descargar | [ Datasheet HMC305LP4.PDF ] | |
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