DG190AP/883B

与JFET开关高速驱动器 High-Speed Drivers with JFET Switch

Description

The DG181 thru DG191 series of analog gates consist of 2 or 4 N-channel junction-type field-effect transistors JFET designed to function as electronic switches. Level-shifting drivers enable low-level inputs 0.8V to 2V 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 both directions. In the OFF condition, the switches will block voltages up to 20V peak-to-peak. Switch-OFF input-output isolation 50dB at 10MHz, due to the low output impedance of the FET-gate driving circuit.

Features

• Constant ON-Resistance for Signals to ±10V DG182, DG185, DG188, DG191, to ±7.5V All Devices

• ±15V Power Supplies

• <2nA Leakage from Signal Channel in Both ON and OFF States

• TTL, DTL, RTL Direct Drive Compatibility

• tON, tOFF <150ns, Break-Before-Make Action

• Cross-Talk and Open Switch Isolation >50dB at 10MHz 75Ω Load