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RF Micro Devices

RFSA2514 Datasheet Preview

RFSA2514 Datasheet

Digital Step Attenuator

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RFSA2514
Serial Con-
trolled Digital
Step Attenua-
tor 50MHz to
4000MHz, 5-
Bit, 0.5dB LSB
RFSA2514
SERIAL CONTROLLED DIGITAL STEP ATTENUATOR
50MHz TO 4000MHz, 5-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
5-Bits, 15.5dB Range, 0.5dB
Step
High Linearity, IIP3 >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
GND
5
6
SPI
5-Bit DSA
18 GND
17 GND
16 GND
15 RF2
14 GND
13 GND
7 8 9 10 11 12
Functional Block Diagram
Product Description
RFMD's RFSA2514 is a 5-bit digital step attenuator (DSA) that features high linear-
ity over the entire 15.5dB gain control range with excellent step accuracy in 0.5dB
steps. The RFSA2514 is programmed via a serial mode control interface that is
both 3V and 5V compatible. The RFSA2514 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
RFSA2514SR
RFSA2514SQ
RFSA2514TR7
RFSA2514TR13
RFSA2514PCK-410
7” reel with 100 pieces
Sample bag with 25 pieces
7” reel with 750 pieces
13” reel with 2500 pieces
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 customerservice@rfmd.com.
1 of 13




RF Micro Devices

RFSA2514 Datasheet Preview

RFSA2514 Datasheet

Digital Step Attenuator

No Preview Available !

RFSA2514
Absolute Maximum Ratings
Parameter
Supply Voltage
DC Supply Current
Power Dissipation
Max RF Input Power
Operating Temperature (TCASE)
Storage Temperature
Junction Temperature
ESD Rating (HBM)
Moisture Sensitivity Level
Rating
+5.5
15
83
28.3
-40 to +85
-40 to +150
150
Class 1C
MSL3
Unit
V
mA
mW
dBm
°C
°C
°C
Caution! ESD sensitive device.
Exceeding any one or a combination of the Absolute Maximum Rating conditions may
cause permanent damage to the device. Extended application of Absolute Maximum
Rating conditions to the device may reduce device reliability. Specified typical perfor-
mance or functional operation of the device under Absolute Maximum Rating condi-
tions is not implied.
The information in this publication is believed to be accurate and reliable. However, no
responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any
infringement of patents, or other rights of third parties, resulting from its use. No
license is granted by implication or otherwise under any patent or patent rights of
RFMD. RFMD reserves the right to change component circuitry, recommended appli-
cation circuitry and specifications at any time without prior notice.
RFMD Green: RoHS compliant per EU Directive 2002/95/EC, halogen free
per IEC 61249-2-21, < 1000ppm each of antimony trioxide in polymeric
materials and red phosphorus as a flame retardant, and <2% antimony in
solder.
Parameter
Specification
Min. Typ. Max.
Frequency Range
50
4000
Insertion Loss
0.67
0.78
0.88
1.23
1.41
2.15
Gain Control Range
15.5
Step Accuracy
±(0.1 + 5.0% attenuation setting)
Input IP3
48 50
Input P0.5dB
26
28
Input Return Loss
29
17
Output Return Loss
24
15
Control Interface
5-bit, Serial
Settling Time
200
Switching Speed
200
Supply Voltage (VDD)
Supply Current
4.75 5.0 5.25
5.3
Control Voltage (VCTL)
Low, VCTL = 0V to 0.8V
High, VCTL = 2.0V to VDD
Notes:
1. VDD = 5V, VCTL = 5V, T = 25°C
2. IIP3 measured with PIN = +12dBm/tone, 1MHz spacing
Unit
MHz
dB
dB
dB
dB
dB
dB
dB
dB
dBm
dBm
dBm
dB
dB
dB
dB
bit
ns
ns
V
mA
V
V
Condition
50MHz, 0dB attenuation
500MHz, 0dB attenuation
850MHz, 0dB attenuation
2100MHz, 0dB attenuation
2700MHz, 0dB attenuation
4000MHz, 0dB attenuation
0.5dB step size
50MHz to 3000MHz, Min. 48dBm 8dB Bit
50MHz to 100MHz, all states
150MHz to 2500MHz, all states
50MHz to 2700MHz, all states
2700MHz to 4000MHz, all states
50MHz to 2700MHz, all states
2700MHz to 4000MHz, all states
Serial interface
tRISE, tFALL (10%/90% RF)
tON, tOFF (50% CTL to 10%/90% RF)
Typical performance based on 5V operation.
2 of 13
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or customerservice@rfmd.com.
DS120706


Part Number RFSA2514
Description Digital Step Attenuator
Maker RF Micro Devices
Total Page 13 Pages
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