DG187AP

Analog Switches, Multiplexers, Demultiplexers Overview

The DG187AP is a precision single-pole, double-throw (SPDT) analog switch manufactured by Vishay Siliconix. It utilizes n-channel JFET transistors and a TTL-compatible bipolar driver to provide accurate switching of video and audio signals with constant on-resistance over the entire analog range. The device features break-before-make switching action to eliminate inadvertent shorting between channels. Key electrical parameters include a maximum drain-source on-resistance of 60 ohms at room temperature and 150 ohms across the full operating temperature range. The saturation drain current is rated at 30 mA. The component operates within an analog signal range of -12.5 V to 10 V or -4.5 V to 12 V depending on supply conditions.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Break-before-make switching action prevents channel shorting and reduces crosstalk
• Constant on-resistance maintained across the full analog signal range
• Low leakage current minimizes large signal errors for high precision applications

Analog Switches, Multiplexers, Demultiplexers Applications

• Audio switching circuits
• Video signal routing
• Data acquisition systems

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific suffix 'AP' against the manufacturer's datasheet to confirm the package type and military qualification status. Ensure that the required voltage ratings and current limits align with the target circuit design before procurement. Cross-reference the part number with official distributor catalogs to confirm availability and compliance documentation.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select the DG187AP when a moderate on-resistance of 60 ohms is acceptable compared to lower resistance alternatives like the DG186. This component is suitable for applications requiring low distortion and high isolation without the higher cost of ultra-low resistance switches. Verify that the 30 mA saturation current meets the load requirements of the specific application.

Analog Switches, Multiplexers, Demultiplexers Part Context

The DG187AP belongs to the DG186/187/188 series of high-speed drivers with SPDT JFET switches. This family is designed for precision analog signal switching where flat on-resistance is critical. The series includes variants with different on-resistance values to suit various impedance matching requirements in professional audio and video equipment.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

DG186AP offers lower on-resistance but higher current capability. DG188AP provides higher on-resistance. JM38510/11105BCA is the military equivalent designation for this device configuration.