FSA551UCX

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The Depletion Mode technology allows the device to conduct signals when there is no VCC available and to isolate signals when VCC is present. During signal conduction, the Depletion Mode gate control allows the FSA551 to achieve excellent THD+N performance while consuming minimal power.  VSW-OFF: -0.3 V to 3 V Related Resources  VSW-ON: -0.3 V to 3 V   RON: 0.38 Ω Typical  RON Flat: 0.01 Ω (Typical)  THD+N: 0.0005% (Typical)  Fairchild Green, RoHS Compliant, Halogen Free FSA551 Evaluation Board Applications   Smart Phones Tablets, Ultra Books 1A 2A SW1 1B SW2 VCC VCC 3MΩ 3MΩ #1S Depletion Gate Control VCC CBYP 2B RPD 5MΩ #2S 0.1μF GND Figure 1. Top Level Block Diagram Ordering Information Part Number Operating Temperature Range Top Mark Package Packing Method FSA551UCX -40 to 85°C U9 9-Ball WLCSP, 0.40 mm Pitch, 1.215 x 1.385 x 0.58 mm (Nominal) 3000 Units on Tape & Reel © 2014 Fairchild Semiconductor Corporation FSA551 • Rev. 1.7 www.fairchildsemi.com FSA551 — Dual SPST Depletion Mode Audio Switch November 2014 1 2 3 1A VCC 1B A 2A NC 2B B #1S GND #2S C 1.385mm 1.385mm 3 2 1 1B VCC 1A A 2B NC 2A B #2S GND #1S C 1.215mm 1.215mm Top Through View Bottom View Figure 2. Top Through View Figure 3. Bottom View Pin Descriptions Pin # Name Type Description A1 1A Depletion I/O A-Port of Switch 1 (Normally Closed) A3 1B Depletion I/O B-Port of Switch 1 (Normally Closed) C1 #1S Control A2 VCC Power Supply Select to Enable/Disable SW1 (Enable LOW) Power Supply Input B2 NC No Connect C2 GND Ground B1 2A Depletion I/O A-Port of Switch 2 (Normally Closed) B3 2B Depletion I/O B-Port of Switch 2 (Normally Closed) C3 #2S Control Table 1. Do Not Connect Ground Select to Enable/Disable SW2 (Enable LOW) Depletion Mode Control Truth Table VCC #1S #2S Switch 1 Switch 2 LOW X X ON ON HIGH HIGH HIGH OFF OFF HIGH LOW HIGH ON OFF HIGH HIGH LOW OFF ON Table 2. Recommended External Component Component Description Vendor Parameter CBYP 0.1 µF, 10%, 6.3 V, X5R, 0201 Murata GRM033R60J104K C © 2014 Fairchild Semiconductor Corporation FSA551 • Rev. 1.7 Min. Typ. Unit 0.65 0.1 µF www.fairchildsemi.com 2 FSA551 — Dual SPST Depletion Mode Audio Switch Pin Configuration Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. Symbol VCC Parameter Supply/Control Voltage Min. Max. Unit -0.5 4.6 V VCNTRL Control Input Voltage #1S, #2S -0.5 4.6 V VSW(ON) DC Switch I/O Voltage (Switch Conducting) 1A, 1B, 2A, 2B -0.5 3.3 V 1A, 1B, 2A, 2B -0.5 3.3 V VSW(OFF) DC Switch I/O Voltage (Switch Isolated) ISW ISWPEAK Switch I/O Current VCC=0 V (Switch Conducting) 350 mA Peak Switch Current Pulsed at 1 ms Duration,