STMicroelectronics

STG3689DTR

STG3689DTR Description

The STG3689DTR is a high-performance, single-pole double-throw (SPDT) switch designed by STMicroelectronics. This interface IC chip is optimized for applications requiring low on-state resistance and fast switching times. The STG3689DTR features a 2:1 multiplexer/demultiplexer circuit, making it ideal for signal routing and switching in various electronic systems. Despite its obsolete status, the STG3689DTR remains a reliable choice for engineers seeking a robust and efficient switching solution.

STG3689DTR Features

• Low On-State Resistance: With a maximum on-state resistance (R_on) of 700mOhm, the STG3689DTR ensures minimal power loss and high efficiency in signal transmission.
• Fast Switching Times: The switch times (T_on and T_off) are maximized at 50ns and 30ns respectively, enabling rapid signal switching and reducing latency in high-speed applications.
• Low Leakage Current: The maximum leakage current (I_S(off)) is only 10nA, ensuring minimal power consumption and maintaining signal integrity even in low-power environments.
• Channel-to-Channel Matching: The ΔR_on is 600mOhm, providing consistent performance across multiple channels.
• Low Channel Capacitance: The channel capacitance (C_S(off) and C_D(off)) is 7pF, reducing signal distortion and maintaining high signal quality.
• Wide Supply Voltage Range: The STG3689DTR operates within a supply voltage range of 1.65V to 4.3V, offering flexibility in various power supply configurations.
• High Bandwidth: The -3dB bandwidth is 85MHz, making it suitable for high-frequency applications.
• Charge Injection: The charge injection is 44pC, ensuring minimal signal disruption during switching.
• Compliance and Reliability: The STG3689DTR is REACH unaffected and ROHS3 compliant, meeting environmental and safety standards. It also has a moisture sensitivity level (MSL) of 3 (168 hours), ensuring reliability in various environmental conditions.
• Packaging: Available in a surface-mount 10-TDFN package, the STG3689DTR is suitable for compact and space-constrained designs.

STG3689DTR Applications

The STG3689DTR is ideal for a variety of applications where reliable and efficient signal switching is required. Some specific use cases include:

• Telecommunications: Switching between different communication channels in base stations and mobile devices.
• Consumer Electronics: Routing signals in multimedia devices such as televisions, set-top boxes, and gaming consoles.
• Automotive Electronics: Managing signal paths in infotainment systems and advanced driver-assistance systems (ADAS).
• Industrial Control: Switching control signals in programmable logic controllers (PLCs) and industrial automation systems.
• Medical Devices: Ensuring reliable signal transmission in medical imaging and diagnostic equipment.

Conclusion of STG3689DTR

The STG3689DTR, despite being obsolete, remains a valuable component for engineers and designers in need of a reliable SPDT switch. Its low on-state resistance, fast switching times, and low leakage current make it an efficient solution for high-speed and low-power applications. The wide supply voltage range and high bandwidth further enhance its versatility. While newer models may offer additional features, the STG3689DTR continues to provide robust performance and reliability, making it a preferred choice in various industries.