Want to post a buying lead? If you are not a member yet, please select the specific/related part number first and then fill the quantity and your contact details in the "Request for Quotation Form" on the left, and then click "Send RFQ".Your buying lead can then be posted, and the reliable suppliers will quote via our online message system or other channels soon.
The DG183/184/185 are precision dual double-pole,single-throw (DPST) analog switches designed to provide accurate switching of video and audio signals. This series is ideally suited for applications requiring a constant on-resistance over the entire analog range.
The major difference in the devices is the on-resistance (DG183-10 , DG184-30, DG185-75 ) Reduced errors are achieved through low leakage current (ID(on) < 2 nA). Applications which benefit from the flat JFET on-resistance include audio switching, video switching, and data acquisition.
Constant On-Resistance Over Entire Analog Range Low Leakage Low Crosstalk Break-Before-Make Switching Rad Hardness
DG185 Typical Application
Audio Switching Precision Switching Video Switching Video Routing Sample/Hold Aerospace
DG185 Connection Diagram
DG186 General 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.
• 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 (75 Load)