FSA2275A: FSA2275A — DPDT (0.5 Ώ) HiFi Audio Switch w/ Negative Swing

The FSA2275A is a high-performance, Double-Pole Double-Throw (DPDT) analog switch with negative swing audio capability. The FSA2275A features ultra-low audio RON of 0.5 Ώ (typical) at 2.5 V VCC. The 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 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.

Features

• V_DD Operating Range: 2.5 to 5.5 V
• External Capacitor Connection for Pop and Click Noise Suppression
• Power-Off Protection on Common Ports
• R_ON = 0.5 Ω (Typ.) at 2.5 V V_DD
• THD+N = -105 dB; 2 V_RMS, 20 kΩ Load; f = 1 kHz
• X_TALK = -134 dB at 1 V_RMS, 50 Ω Load; f = 1 kHz
• Off Isolation = -103 dB at 1 V_RMS, 50 Ω Load; f = 1 kHz
• 12-Lead UMLP 1.8 mm x 1.8 mm
• Removed R_SHUNT resistors for FSA2275A