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PDF RFDA0045 Data sheet ( Hoja de datos )
| Número de pieza | RFDA0045 | |
| Descripción | DIGITAL CONTROLLED VARIABLE GAIN AMPLIFIER | |
| Fabricantes | RF Micro Devices | |
| Logotipo |  |
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RFDA0045Dig-
ital Controlled
Variable Gain
Amplifier
RFDA0045
DIGITAL CONTROLLED VARIABLE GAIN
AMPLIFIER 10MHZ TO 850MHZ
Package: MCM 32-Pin, 5.2mm x 5.2mm
32 31 30 29 28 27 26 25
Features
Frequency Range 10MHz to
850 MHz
6-Bit Digital Step Attenuator
SPI Serial Control Program-
ming
Max Gain = 44dB at 150MHz
Gain Control Range = 31.5dB
(0.5dB Step Size)
High OIP3 = 42dBm at
150 MHz
High P1dB = 20dBm at
150 MHz
Single +5V Supply
Small 32-Pin, 5.2mm x
5.2mm, MCM
Footprint Compatible with
5mm x 5mm, 32-Pin, QFN
Power-up Programming
Applications
Transceiver IF DVA
Cellular, PCS, GSM, UMTS
Wireless Data, Satellite
Terminals
GND 1
RFIN1 2
GND 3
RFOUT1 4
GND 5
ATTIN 6
GND 7
ACG1 8
SPI Controller
6-BIT DSA
N2/4C NC
23 GND
22 RFOUT2
21 GND
20 RFIN2
19 ATTOUT
18 GND
17 ACG7
9 10 11 12 13 14 15 16
EPAD
GND
Functional Block Diagram
Product Description
RFMD's RFDA0045 is a digital controlled variable gain amplifier (DVGA) featuring
high linearity over the entire gain control range. The 6-bit digital step attenuator is
programmed with serial mode control interface. The RFDA0045 is packaged in a
5.2mmx5.2mm leadless laminate MCM with plated through thermal vias for low
thermal resistance. The amplifiers’ bias chokes and DC blocks are external allowing
for optimum performance over specific bands within 10MHz to 850MHz.
Ordering Information
RFDA0045SQ
RFDA0045SR
RFDA0045T7
RFDA0045TR13
RFDA0045PCK-410
Sample Bag with 25 pieces
7” Sample Reel with 100 pieces
7” Reel with 750 pieces
13” Reel with 2500 Pieces
10MHz to 850MHz PCBA with 5-piece sample bag
DS110621
Optimum Technology Matching® Applied
GaAs HBT
GaAs MESFET
InGaP HBT
SiGe BiCMOS
Si BiCMOS
SiGe HBT
GaAs pHEMT
Si CMOS
Si BJT
GaN HEMT
RF MEMS
LDMOS
RF MICRO DEVICES®, RFMD®, Optimum Technology Matching®, Enabling Wireless Connectivity™, PowerStar®, POLARIS™ TOTAL RADIO™ and UltimateBlue™ are trademarks of RFMD, LLC. BLUETOOTH is a trade-
mark owned by Bluetooth SIG, Inc., U.S.A. and licensed for use by RFMD. All other trade names, trademarks and registered trademarks are the property of their respective owners. ©2006, RF Micro Devices, Inc.
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
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1 page  
RFDA0045
SPI Timing Diagram
CLK
DATA
LE
DOUT
Serial Port Interface
Programming Example, 6-Bit
CLK
DATA
LE
MSB
D5 D4 D3 D2
LSB
D1 D0
SPI Timing Diagram Specifications
Parameter
Limit
Unit
Comment
t1 25 MHz max
CLK Frequency
t2 20 ns min
CLK High
t3 20 ns min
CLK Low
t4
5
ns min
DATA to CLK Setup Time
t5 5 ns min DATA to CLK Hold Time
t6 30 ns min
DATA Valid
t7
5 ns min
LE to CLK Setup Time
t8
5 ns min
CLK to LE Setup Time
t9 10 ns min
LE Pulse Width
t10 20 ns max
Output Set
Truth Table
Control Bit
D5 D4 D3 D2 D1
11111
11111
11110
11101
11011
10111
01111
00000
Power-up Programming Truth Table
PUP Attenuator Setting
High Attenuation at min, 0dB
Low Attenuation at max, 31.5dB
D0
1
0
1
1
1
1
1
0
State
Low
High
Gain Relative to Maximum Gain
0 dB
-0.5 dB
-1 dB
-2 dB
-4 dB
-8 dB
-16 dB
-31.5 dB
Logic Voltage Levels
Logic
0V to 0.8V
2.0V to 5.0V
DS110621
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
5 of 10
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet RFDA0045.PDF ] | |
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