General Description
     The AS3718 is a bidirectional, 2-channel singlepole double-throw (SPDT) analog switch designed tooperate from 1.8V to 5.5V. The device featuresnegative signal swing capability that allows signalsbelow ground to pass through the switch withoutdistortion.Targetedapplication includebatterypowered equlpmentthat benefit from the lowon-resistance and fast switching speeds. Low ON-stateON-statereslstance,excellent channelto-channelreslstancematching, and minimal total harmonicdistortion (HD) performance are ideal for audioapplications. The break-before-make feature preventssignal distortion during the transferring of a signal fromone path to another.
    The AS3718 is a committed dual single-pole double-throw (SPDT) that consist of two normally open(NO) and two normally close (NC) switches. Thisconfiguration can be used as a dual 2-to-1 multiplexer.The device can pass -2V ground referenced signal withvery low distortion.The select input  is IIL-level compatible.
    The AS3718 features wery low qulescent currenteven when the control woltage is lower than the VCCsupply.The feature suits portablelhandset applicationby allowing direct interface with baseband processorgeneralpurpose l/Os withminimumbatteryconsumption.
    The AS3718 is offered in Green QFN1418-10Lpackage and is specified over an amblent temperaturerange of -40C to 85C


●  Specified Break-Before-Make Switching
●  Negative Signaling Capability: Maximum Swing from -2.75V to 2.75V (VCC=2.75V)
●  Low On- Resistance (0.6Ω Typical) at 3.6V
●  Low Charge Injection
●  Excellent On-State Resistance Matching
●  Wide VCC Range: 1.8V to 5.5V
●  -2V Low Distortion Negative Signal Passing
●  Fast Switching Times
●  Rail to Rail Input and Output Operation
●  1.8V Logic Compatible Control Pin
●  Break-Before-Make Switching
●  High Off-Isolation: -70dB at 100KHz
●  Low Crosstalk: -70dB at 100KHz
●  -3db Bandwidth: 75MHz
●  THD for 2VP-P at 32Ω: 0.034%(VCC=3.6V)
●  RoHS and Green Compliant

●  QFN1418-10L Packages
●  -40℃ to +85 ℃ Temperature Range


●  Cell Phones

  PDAs, Digital Camera, Notebook
  Portable Instrumentation/Media Players
  Battery Operated Equipment
  LCD Monitor, TV, and Set-Top Box
  Audio Routing
  Medical Imaging
  Audio and Video Signal Routing
  Smart Speaker, Sound Box









AS12XX是我司新发布的一款用于两线制(非 3 线制,只需使用 VDD 和 GND 引脚即可)垂直磁场的检测,是一款功能强大设计简易的高集成度芯片。