ISL54409 Audio/USB 2.0 Wired-OR Switch with Click and Pop Reduction

The Intersil ISL54409 and ISL54410 are Dual SPST (Single Pole/Single Throw) switches that provide a very low distortion audio path for a stereo headphone and can be connected in a wired-OR configuration at the switch outputs with USB2.0 HS signals for Audio/USB signal multiplexing to a common connector. The audio switch path can be disabled to provide high signal isolation, preventing crosstalk between the audio codec and USB data signals.

The ISL54409 and ISL54410 analog switches are negative swing capable with a single supply voltage and maintain excellent THD performance within a signal range of -1V to +1V. The switch terminals have low pin capacitance (4pF typical), minimizing impact to USB 2.0 High-Speed signals. The ISL54409 offers a Low Power Shutdown mode while the ISL54410 offers a High Off-Isolation mode. The ISL54410 contains active Audio Click and Pop Elimination circuitry for AC-coupled audio signals.

The ISL54409 and ISL54410 are available in a 8 Ld TDFN (2mmx2mm) or a 10 Ld μTQFN (1.8mmx1.4mm) package. They operate over a temperature range of -40°C to +85°C.

ISL54409 特点

Single Supply Operation (VDD): +2.7V to +5.0V
Negative Signal Handling (See “Audio/USB wired-OR Application” on page 8 on protecting USB controller)
Low OFF Capacitance for HS USB: 4pF
Power Off Protection
THD+N at 1mW into 32Ω Load: <0.02%
Audio Muting: >110dB
Low Power Consumption: 21μW with 3V supply
Low Power Shutdown Mode (ISL54409)
Active Click and Pop Elimination Circuitry (ISL54410)
USB VBUS Hot Plug Operation
Available in 8 Ld TDFN (2mmx2mm) or 10 Ld μTQFN (1.8mmx1.4mm) Package

ISL54409 应用

Consumer Entertainment Systems
MP3 and other Personal Media Players
Cellular/Mobile Phones and PDAs

ISL54409 芯片订购指南

芯片型号	产品状态	温度范围	封装尺寸图	潮湿敏感度等级MSL	美元价格US $
ISL54409IRTZ-T	量产	工业级	8 Ld TDFN T+R	1	0.44
ISL54409IRUZ-T	量产	工业级	10 Ld uTDFN T+R	1	0.44
ISL54409EVAL1Z			评估板	N/A	价格录入中