NCS2302: Headset Detection Interface with Send/End Detect

Description: The NCS2302 is a compact and cost effective headse...
  • The NCS2302 is a compact and cost effective headset detection interface IC. It integrates several circuit blocks to detect the presence of a stereo headset with a microphone and whether the send/end button has been pressed. The NMOS transistor on the MIC pin mutes the signal when the headset is not present. The built in resistor divider provides the reference voltage for detecting the left audio channel. When L_DET and GND_DET are pulled low, the logic low output of the OR gate indicates the headset has been connected properly and the MIC pull−down is disabled. A comparator is integrated for detecting the send/end button press. The NCS2302 comes in a space−saving UQFN10 package (1.4 x 1.8 mm).
  • Features
  • Wide Supply Voltage for Headset Detection Circuit: VDD = 1.6 V to 2.5 V - Wide Range Allows for Design Flexibility
  • Wide Supply Voltage for S/E Comparator Circuit: VDD2 = 1.6 V to 2.8 V - Wide Range Allows for Design Flexibility
  • Low Quiescent Supply Current: 17 µA typical - Low quiescent current reduces impact on battery drain
  • Low Impedance MIC Pull−Down: RDS(ON) = 0.45 Ω Typical - Reduces Pop & Click Noise
  • Space Saving UQFN10 Package - Saves Space on Compact PCB Designs
  • Applications
  • Headset Detection
  • Send/End Button Press Detection
  • End Products
  • Cell Phones, Smartphones
  • Tablets
  • Notebooks
  • Technical Documentation & Design Resources
    Availability and Samples
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: Headset Detection Interface with Send/End Detect
  • Package Type: UQFN-10
  • Package Case Outline: 488AT
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 3000
  • Specifications
  • Channels:
  • VCC Min (V): 1.6 
  • VCC Max (V): 2.8 
  • IO Typ (mA):
  • ICC Typ (mA): 0.017 
  • tres Typ (ns): 45 
  • VIO Max (mV):
  • TA Min (°C): -40 
  • TA Max (°C): 85 
  • Package Type: UQFN-10 
  • ON Semiconductor Full Web Site