FSA553UCX

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This literature is subject to all applicable copyright laws and is not for resale in any manner. FSA553 Dual SPST Depletion Audio Switch with Negative Swing Features Description  Dual SPST Depletion Switch  Normally Closed when VCC < 0.2 V  Switches Configurable through Select Pins  VSW: -1.5 V to +1.5 V  RON: 0.4 Ω (Typical) The FSA553 is a high-performance dual single-pole single-throw (SPST x 2) audio switch. The Depletion 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 gate control allows the FSA553 to achieve excellent THD+N performance while consuming minimal power.  RFLAT < 0.01 Ω (Typical)  THD+N: -104 dB (Typical)  OIRR: -78 dB (Typical) Related Resources  FSA553 Evaluation Board Applications   Smart Phones Tablets, Ultra Books VCC FSA553 #1S Processor Audio Sub-System Depletion Gate Control #2S 1A 1B 2A 2B Figure 1. Application Block Diagram Ordering Information Part Number Operating Temperature Range Top Mark FSA553UCX -40 to 85°C NG © 2015 Fairchild Semiconductor Corporation FSA553 • Rev. 1.4 Package 9-Ball WLCSP, 0.40 mm Pitch, 1.215 x 1.385 x 0.58 mm (Nominal) Packing Method 3000 Units on Tape & Reel www.fairchildsemi.com FSA553 — Dual SPST Depletion Mode Audio Switch with Negative Swing April 2015 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 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 / Control 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. Description Select to Enable/Disable SW1 (Enable LOW) Power Supply Input Do Not Connect Ground Select to Enable/Disable SW2 (Enable LOW) Switch 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 © 2014 Fairchild Semiconductor Corporation FSA553 • Rev. 1.4 www.fairchildsemi.com 2 FSA553 — Dual SPST Depletion Mode Audio Switch with Negative Swing 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 4.3 V VCNTRL Select Input Voltage #1S, #2S -0.5 4.3 V VSW(ON) DC Switch I/O Voltage (Switch Conducting) 1A, 1B, 2A, 2B -2.0 2.0 V VSW(OFF) DC Switch I/O Voltage (Switch Isolated) 1A, 1B, 2A, 2B -2.0 2.0 V Switch I/O Current VCC=0 V (Switch Conducting) 350 mA Peak Switch Current Pulsed at 1 ms Duration,