DG180AP

Overview

The DG180AP is a precision dual single-pole, single-throw (SPST) analog switch manufactured by Vishay Siliconix. It utilizes four 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 operates within a supply voltage range of -20 V to +15 V and supports an analog signal range up to ±15 V. Key electrical parameters include a maximum drain-source on-resistance of 10 Ohms at room temperature, rising to 20 Ohms across the full operating temperature range of -55°C to +125°C. Leakage currents are minimized to less than 2 nA in the on state.

Feature Summary

• Provides constant on-resistance across the entire analog signal range for high-precision applications
• Features low leakage current and low distortion characteristics suitable for sensitive signal paths
• Incorporates fault protection capabilities to handle high voltage differentials between terminals
• Designed with radiation hardness specifications for aerospace and guidance system environments

Applications

• Video signal switching and routing
• Audio signal switching and processing
• Sample-and-hold circuits
• Guidance and control systems
• Aerospace electronic systems

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to military-grade specifications. Confirm the specific suffix 'A' corresponds to the required -55°C to +125°C operating temperature range. Ensure that the 14-pin sidebraze package configuration matches the target PCB footprint and thermal dissipation requirements before finalizing procurement orders.

Selection Notes

Select the DG180AP when a low on-resistance of 10 Ohms is required compared to the higher resistance variants like the DG181 or DG182. This model is appropriate for designs requiring operation in extreme temperatures down to -55°C. Verify that the circuit can accommodate the specified power dissipation limits for the 14-pin sidebraze package under the expected ambient conditions.

Part Context

The DG180AP belongs to the DG180/181/182 series of high-speed drivers with dual SPST JFET switches. It shares the same architectural design as the DG181 and DG182 but differs primarily in its on-resistance value. The series is characterized by its use of JFET technology to eliminate large signal errors common in MOS-based switches.

Replacement Considerations

Public confirmed substitute part numbers: DG181AP, DG182AP.