FSA2275 Datasheet | Fairchild Semiconductor

Features - VDD Operating Range: 2.5 to 5.5 V - External Capacitor Connection for Pop and Click Noise Suppression - Power-Off Protection on mon Ports - RON = 0.5 Ω (Typ.) at 2.5 V VDD - THD+N = -105 d B; 2 VRMS, 20 kΩ Load; f = 1 k Hz - XTALK = -134 d B at 1 VRMS, 50 Ω Load; f = 1 k Hz - Off Isolation = -103 d B at 1 VRMS, 50 Ω Load; f = 1 k Hz - 12-Lead UMLP 1.8 mm x 1.8 mm - Removed R_SHUNT resistors for FSA2275A Applications - Mobile Phone, Tablet, Notebook PC, Media Player - Docking Station, TV, Set-Top Box, LCD Monitor Description The FSA2275 / FSA2275A is a high-performance, Double-Pole Double-Throw (DPDT) analog switch with negative swing audio capability. The FSA2275 / FSA2275A features ultra-low audio RON of 0.5  (typical) at 2.5 V VCC. The FSA2275 / FSA2275A operates over a VCC range of 2.5 V to 5.5 V, is fabricated with sub-micron CMOS technology to achieve fast switching speeds, and is designed for break-before-make operation. To minimize pop and click during operation, the turn on ramp time is selectable using an external capacitor (C_EXT). The FSA2275 / FSA2275A features THD+N specifications that target a Hi-Fidelity audio quality into both 32 Ω headphones and line out type loads (>600 Ω). The FSA2275A removes the shunt resistors which improve noise immunity. Processor Audio Source 1 MUTE L1 L2 R1 Audio Source 2 R2 Charge Pump, Oscillator & POR Control Logic Pop and Click Reduction Slew Rate Control VDD C_EXT LSPKR RSHUNT RSPKR RSHUNT GND Figure 1. Application Block...