RFSA3715 Datasheet, PDF (1/20 Pages) RF Micro Devices – 5MHz to 4000MHz, Digital Step Attenuator

RFSA3715
5MHz to 4000MHz, Digital Step Attenuator
The RFMD’s RFSA3715 is a 7-bit digital step attenuator
(DSA) that features high linearity over the entire 31.75dB gain
control range with 0.25dB steps. The RFSA3715 features
three modes of control: serial addressable, latched parallel
and direct parallel programming. The RFSA3715 has a low
insertion loss of 1.5dB at 2GHz. Patent pending circuit
architecture providing overshoot-free transient switching
performance. External address pins allow up to eight DSAs to
be controlled on a single bus. The RFSA3715 is available in a
5mm x 5mm QFN package.
32 31 30 29 28 27 26 25
NC 1
VDD 2
PBAR/S 3
A0 4
GND 5
GND 6
RFIN 7
GND 8
24 CLK
LOGIC CONTROL
23 LE
22 A1
21 A2
20 GND
7-BIT DSA
19 GND
18 RFOUT
17 GND
9 10 11 12 13 14 15 16
Functional Block Diagram
RFSA3715
Package: QFN, 32-pin,
5.0mm x 5.0mm x 0.85mm
Features
■ 7-Bit, 31.75dB Range, 0.25dB Step
■ Patent Pending Circuit Architecture
■ Overshoot-free Transient
Switching Performance
■ Frequency Range 5MHz to
4000MHz
■ High Linearity, IIP3 >55dBm
■ Serial and Parallel Control
Interface
■ Fast Switching Speed, <120nsec
■ Serial Addressable Supports Up to
Eight Addresses
■ Single Supply 3V to 5V Operation
■ RF Pins Have No DC Voltage, Can
Be DC Grounded Externally
■ Power-up Default Setting is
Maximum Attenuation
Applications
■ 2G through 4G Base Stations
■ Point-to-Point
■ WiMax/WiFi
■ Test Equipment
Ordering Information
RFSA3715SQ
Sample bag with 25 pieces
RFSA3715SR
7" Reel with 100 pieces
RFSA3715TR13
13" Reel with 2500 pieces
RFSA3715PCK-410 5MHz to 4000MHz PCBA with 5-piece sample bag
RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421
For sales or technical support, contact RFMD at +1.336.678.5570 or [e-mail].
DS150205
RF MICRO DEVICES^® and RFMD^® are trademarks of RFMD, LLC. BLUETOOTH is a trademark 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. ©2013, RF Micro Devices, Inc.
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