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AS1749

austriamicrosystems
Part Number AS1749
Manufacturer austriamicrosystems
Description Audio Clickless Switches
Published Feb 18, 2015
Detailed Description 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...
Datasheet PDF File AS1749 PDF File

AS1749
AS1749


Overview
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 device is ideal for cell phones, PDAs and hand-held devices, notebook computers and MP3 players.
Figure 1.
Typical Operating Circuit Out+ Audio Source 1 Out- NC1 NO1 NC2 Out+ Audio Source 2 Out- NO2 Mute CMPO Shunt Switch COM1 IN1 Input Select 8Ω Speaker IN2 COM2 V+ V+/3 + - CMP- Mute Button www.
austriamicrosystems.
com/Analog-Switches/AS1747-50 Revision 1.
02 1 - 16 Technical coantmesntAsGtill valid AS1747, AS1748, AS1749, AS1750 Datasheet - Pinout 4 Pinout Pin Assignment Figure...


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