RFSA2644 Datasheet, PDF (1/12 Pages) RF Micro Devices – SERIAL CONTROLLED DIGITAL STEP ATTENUATOR 50MHz TO 4000MHz, 6-BIT, 0.5dB LSB

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
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 ([phone] or [e-mail].
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