AS1748

Technical coantmesntAsGtill valid Datasheet AS1747, AS1748, AS1749, AS1750 L o w - Vo l ta g e , D u a l S P D T, Au d i o C l i c k l e s s S w i t c h e s w i t h Negative Rail Capability 1 General Description 2 Key Features The SPDT (single-pole/double-throw) switches AS1747, AS1748, AS1749 and AS1750 allow signals below ground to pass through without distortion. These analog switches are ideal for switching audio signals, due to their supply voltage from +1.8V to +5.5V and their low 0.4Ω on-resistance. An included comparator offers the AS1748 and AS1750 with headphone detection or mute/send key function. To reduce click-and-pop sounds when switching between pre-charged points the AS1749 and AS1750 have an internal shunt switch. This shunt switch automatically discharges any capacitance at the NO and NC connection points. This SPDT switch is available in space-saving 10-pin TDFN 3x3 packages and operate over the -40ºC to +85ºC extended temperature range. ! Distortion -Free Negative Signal Throughput Down to VCC - 5.5V ! Comparator for Headphone or Mute Detection (AS1748/AS1750) ! Internal Shunt Resistor Reduces Click/Pop (AS1749/AS1750) ! Low On-Resistance (RON) 0.4Ω at +2.7V Supply ! 0.25Ω On-Resistance Flatness ! 0.03Ω On-Resistance Matching ! +1.8V to +5.5V Supply Voltage ! -90dB Crosstalk (100kHz) ! -65dB Off-Isolation (100kHz) ! 0.01% Total Harmonic Distortion ! Available in 10-pin TDFN 3x3, 16-pin TQFN 3x3, and 12-Bump WL-CSP Packages 3 Applications The devic...