FSA551

FSA551 — Dual SPST Depletion Mode Audio Switch November 2014 FSA551 Dual SPST Depletion Mode Audio Switch Features  Dual SPST  Depletion Mode Technology  -3 dB Bandwidth: 240 MHz  VCC-OFF: 1.5 V to 3.0 V  VCC-ON: 0 V to 0.2 V  VSW-OFF: -0.3 V to 3 V  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 Description The FSA551 is a high-performance dual single-pole single-throw (SPST x 2) audio switch. 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. Related Resources  FSA551 Evaluation Board Applications  Smart Phones  Tablets, Ultra Books 1A 1B #1S VCC CBYP 0.1μF SW1 SW2 VCC 3MΩ RPD 5MΩ VCC 3MΩ Depletion Gate Control 2A 2B #2S 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 Pin Configuration 1 2 3 1A VCC 1B A 3 2 1 1B VCC 1A A 1.385mm 2A NC 2B B 1.385mm 2B NC 2A B #1S GND...