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RDA1005L Schematic ( PDF Datasheet ) - RF Micro Devices

Teilenummer RDA1005L
Beschreibung DIGITAL CONTROLLED VARIABLE GAIN AMPLIFIER
Hersteller RF Micro Devices
Logo RF Micro Devices Logo 




Gesamt 10 Seiten
RDA1005L Datasheet, Funktion
RDA1005LDig-
ital Controlled
Variable Gain
Amplifier
50MHz to
4000MHz, 6
Bit
RDA1005L
DIGITAL CONTROLLED VARIABLE GAIN
AMPLIFIER 50MHZ TO 4000MHZ, 6 BIT
Package: MCM, 32-Pin, 5.2mm x 5.2mm
Features
Broadband 50MHz to 4000MHz
Operation
6-Bit Digital Step Attenuator
Serial Mode Programming
Gain = -13.5dB to +18dB (0.5dB
Step Size)
High OIP3/P1dB =
+36dB/20dBm
Single +5V Supply
Small 32-Pin, 5.2mm x 5.2mm,
MCM (Footprint Compatible with
5mm x 5mm 32-Pin QFN)
Applications
Cellular, 3G Infrastructure
WiBro, WiMax, LTE
Microwave Radio
High Linearity Power Control
32 31 30 29 28 27 26 25
AMPIN 1
24 NC
GND 2
GND 3
6-bit SPI
23 NC
22 NC
ATTOUT 4
21 NC
ACG1 5
ACG2 6
DSA
20 NC
19 NC
ACG3 7
18 NC
ACG4 8
17 Vdd
9 10 11 12 13 14 15 16
E-pad
GND
Functional Block Diagram
Product Description
RFMD’s RDA1005L is a digitally controlled variable gain amplifier featuring high lin-
earity over the entire gain control range with noise figure less than 6dB in its maxi-
mum gain state. The gain of the 6-bit digital step attenuator is programmed with a
serial mode control interface. The RDA1005L is packaged in a small 5.2mm x
5.2mm leadless laminate MCM which contains plated through thermal vias for
ultra-low thermal resistance. The footprint for this thermal vias for ultra low thermal
resistance. The footprint for this module is directly compatible with a 5mm x 5mm
QFN. This module is easy to use with no external matching components required.
Ordering Information
RDA1005LSQ
RDA1005LSR
RDA1005LTR7
RDA1005LTR13
RDA1005LPCK-410
Sample bag with 25 pieces
7” Sample reel with 100 pieces
7” Reel with 750 pieces
13” Reel with 2500 pieces
50MHz to 4000MHz PCBA with 5-piece sample bag
DS120828
Optimum Technology Matching® Applied
GaAs HBT
GaAs MESFET
InGaP HBT
SiGe BiCMOS
Si BiCMOS
SiGe HBT
GaAs pHEMT
Si CMOS
Si BJT
GaN HEMT
BiFET HBT
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. ©2012, 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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RDA1005L Datasheet, Funktion
RDA1005L
Truth Table
Control Bit
D5 D4 D3 D2 D1 D0
111111
111110
111101
111011
110111
101111
011111
000000
Gain Relative to Maximum Gain
0dB
-0.5dB
-1dB
-2dB
-4dB
-8dB
-16dB
-31.5dB
SPI Timing Diagram
t6
t1
t2 t3
t4 t5
t8
CLK
Serial Port Interface:
Programming example - 6-bit
CLK
DATA
MSB
LSB
D5 D4 D3 D2 D1 D0
DATA
t7
LE
DOUT
t9
t10
LE
Specifications: SPI Timing Diagram
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
Control Voltage Table
State
Low
VDD = +3V
0V to 0.8V
VDD = +5V
0V to 0.8V
High
2.0 to VDD
2.0 to VDD
Power-up Programming Truth Table
PUP Attenuator Setting
Low Attenuation at Max, 31.5dB
High Attenuation at Min, 0dB
6 of 10
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
DS120828

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