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PDF RFSA2644 Data sheet ( Hoja de datos )

Número de pieza RFSA2644
Descripción SERIAL CONTROLLED DIGITAL STEP ATTENUATOR
Fabricantes RFMD 
Logotipo RFMD Logotipo



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No Preview Available ! RFSA2644 Hoja de datos, Descripción, Manual

RFSA2644
Serial Con-
trolled Digital
Step Attenua-
tor
RFSA2644
SERIAL CONTROLLED DIGITAL STEP ATTENUATOR
50MHz TO 4000MHz, 6-BIT, 0.5dB LSB
Package: MCM, 24-Pin, 4.2mm x 4.2mm
24 23 22 21 20 19
Features
Frequency Range 50MHz to
4000MHz
6-Bits, 31.5dB Range, 0.5dB
Step
High Linearity, IP3 >48dBm
3V and 5V Logic Compatible
Serial-to-Parallel Controller
Serial Programming Interface
Power-up Programming Modes
On-Chip ESD Protection Class 1C
HBM
Single Supply, 3V to 5V Operation
Footprint Compatible with Most
24-Pin, 4mm x 4mm, QFNs
Applications
Transceiver RF and IF
Applications
Cellular, PCS, GSM, UMTS, LTE,
WiMax/WiFi
Wireless Data, Satellite
Terminals
Test Equipment
GND 1
VDD 2
GND 3
RF1 4
GND 5
GND 6
7
SPI
6-Bit DSA
18 GND
17 GND
16 GND
15 RF2
14 GND
13 GND
8
9
10 11
12
Functional Block Diagram
Product Description
www.DataSheet.net/
RFMD’s RFSA2644 is a 6-bit digital step attenuator (DSA) that features high linear-
ity over the entire 31.5dB gain control range with excellent step accuracy in 0.5dB
steps. The RFSA2644 is programmed via a serial mode control interface that is
both 3V and 5V compatible. The RFSA2644 also offers a rugged Class 1C HBM ESD
rating via on-chip ESD circuitry. The MCM package is footprint compatible with most
24-pin, 4mm x 4mm, QFN packages.
Ordering Information
RFSA2644SR
7” Sample reel with 100 pieces
RFSA2644SQ
25-Piece sample bag
RFSA2644TR7
7” Reel with 750 pieces
RFSA2644TR13 13” Reel with 2500 pieces
RFSA2644PCK-410 50MHz to 4000MHz PCBA with 5-piece sample bag
DS120706
Optimum Technology Matching® Applied
GaAs HBT
GaAs MESFET
SiGe BiCMOS
Si BiCMOS
GaAs pHEMT
Si CMOS
GaN HEMT
BiFET HBT
InGaP HBT
SiGe HBT
Si BJT
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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RFSA2644 pdf
RFSA2644
Typical Performance at 5V VDD - Broadband Application Circuit
Major Step Error Versus Frequency
1.00
0.75
0.5dB
1dB
2dB
4dB 8dB 16dB
0.50 31.5dB
0.25
0.00
-0.25
-0.50
-0.75
-1.00
0
1000
2000
Frequency (MHz)
3000
4000
Input IP3 versus Frequency
60
55
50
45
40
35
30
0
0dB
2dB
16dB
0.5dB
4dB
31.5dB
1dB
8dB
500
1000
1500
2000
2500
3000
Frequency (MHz)
1.0
0.8
0.6
0.4
0.2
0.0
-0.2
-0.4
-0.6
-0.8
-1.0
0
Step Error versus Attenuation
50MHz
1000MHz
3000MHz
400MHz
2000MHz
4000MHz
4 8 12 16 20 24 28 32
Attenuation (dB)
Input P0.5dB versus Frequency
35
30
www.DataSheet.net/
25
20
0dB
2dB
16dB
0.5dB
4dB
31.5dB
1dB
8dB
15
0
100 200 300 400 500 600 700 800 900 1000
Frequency (MHz)
DS120706
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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RFSA2644 arduino
Package Outline Drawing
RFSA2644
www.DataSheet.net/
DS120706
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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