FSA550 4PST Depletion Mode Isolation Switch0 pages
Description
Features
The FSA550 is a high-performance four-pole singlethrow (4PST) normally closed Depletion-Mode isolation
switch. The Depletion Mode technology allows the
device to conduct signals when there is no VCC available
and to isolate the signals when VCC is present.
4PST (NC)
Depletion Mode MOSFETs
Audio Frequency Range
VCC(OFF): 1.6 V to 3.0 V
RON: 0.8
RON Flat: 0.01
THD+N: 0.002% Typical
Eco Status: Fairchild Green, RoHS Compliant,
Halogen Free
The FSA550 operates on a wide V CC range for design
flexibility. Additionally, select pins allow the internal
oscillator frequency to be adjusted between 500 kHz
and 750 kHz in 75 kHz steps when V CC is present. This
feature is used to shift the electromagnetic interference
(EMI) signature to meet customer specifications.
Related Resources
Applications
FSA550 Evaluation Board
MP3 Portable Media Players
Cellular Phones, Smart Phones
FSA550
Left Speaker
L_SPKR
R_SPKR
GND
Right Speaker
Control IC
Gnd
Vcc
Noise
Canceling
IC
Typical Application
Ordering Information
Part Number
Top
Mark
Operating
Temperature Range
Package
Packing
Method
FSA550UCX
M4
-40 to +85°C
12-Ball WLCSP, 3 x 4 Array, 0.4 mm Pitch,
250 µm Ball
3000 Units on
Tape and Reel
FSA550BUCX
M4
-40 to +85°C
12-Ball WLCSP(with Backside Laminate),
3 x 4 Array, 0.4 mm Pitch, 250 µm Ball
3000 Units on
Tape and Reel
© 2011 Fairchild Semiconductor Corporation
Rev. 1.0.1
www.fairchildsemi.com
4PST Depletion Mode Isolation Switch
FSA550
4PST Depletion Mode Isolation Switch
FSA550
November 2014
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