• DG188 JFET Switch
  • DG188 JFET Switch


  • Constant On-Resistance Over Entire Analog Range
  • Low Leakage
  • Low Crosstalk
  • Rad Hardness


  • Low Distortion
  • Eliminates Large Signal Errors
  • High Precision
  • High Bandwidth Capability
  • Fault Protection


  • Audio Switching
  • Video Switching
  • Sample & Hold
  • Guidance and Control Systems
  • Telemetry

General Description

The DG180 series contains two to four N-channel junction-type field-effect transistors (JFET) designed to function as electronic switches. Level-shifting drivers enable low-level inputs (0.8 to 2.0V) to control the ON-OFF state of each switch.
The driver is designed to provide a turn-off speed which is faster than turn-on speed so that break-before-make action is achieved when switching from one channel to another. In the ON state, each switch conducts current equally well in either direction. In the OFF condition, the switches will block voltages up to 20V peak-to-peak. Switch-OFF input-output feed-through is >60dB at 10MHZ, because of the low output impedance of the FET-gate driving circuit.

Schematic Diagram (Typical Channel)

DG188 Schematic Diagram (Typical Channel)