NEW HIGH-RELIABILITY VERSIONS IN CERDIP AND 20-PIN LCC PACKAGES
25 September 2003 - Vishay Electronic

Now available in both the CerDIP and 20-pin LCC packages, as well as in the narrow-body SOIC-16 and TSSOP-16, devices in the Vishay Siliconix L Series are pin- and function-compatible companions to higher-voltage CMOS industry-standard analog switches and are the industry's first such low-voltage products built to MIL-STD-883.

Delivering faster, more accurate signal processing performance with lower power consumption, L Series analog switches and multiplexers in the new CerDIP and LCC packages are intended for use in military and aerospace systems, including battery-powered equipment and communications. A -55 °C to +125 °C operating temperature range ensures reliable performance in rugged environments.

The high-bandwidth L Series devices include five monolithic quad SPST analog switches (DG411L,DG412L,DG413L, DG441L,and DG442L), two single SPST analog switches (DG417L and DG418L), a single SPDT analog switch (DG419L), and two precision analog multiplexers: the 8-channel DG408L and the dual 4-channel DG409L.

The devices' basic DG-part-number nomenclature gives designers both the flexibility of a recognizable standard and the ability to choose the best part for a given application. For example, a designer familiar with the DG409 for 12-V to 44?-V applications may choose to incorporate the DG409L for 12-V down to 3-V applications.

Typical turn-on time for the L Series analog switches is just 20 ns - compared with up to 150 ns for industry-standard versions - while a 3?dB insertion loss at 280 MHz allows higher bandwidth operation. Providing the widest dynamic range with low signal errors and distortion, superior off-isolation performance of -71 dB at 50 MHz virtually eliminates crosstalk.

The DG408L and DG409L multiplexers offer a threefold or better performance improvement compared with the previous-generation DG408 and DG409. Maximum on-resistance in the new devices is reduced to 29 Ω from 100 Ω, typical transition time is cut to 30 ns from 160 ns, and turn-on time is lowered by a third, to 38 ns from 115 ns. Off-isolation is -70 dB at 1 MHz.

Allowing designers to take advantage of the power savings of lower supply voltages, devices in the L Series are specified for 2.7-V to 12-V single supplies or +/-3-V or +/-6-V dual-supply operation. Maximum on-resistance ranges of only 29 Ω to 80 Ω provide low power consumption, while flat performance over the full drain voltage and temperature range provides less variation between signals. All 10 devices provide a simple logic interface, break-before-make switching action, and ESD protection to 2000 V.

Samples and production quantities of L Series analog switches and multiplexers in all four package types are available now, with lead times of eight weeks for larger orders.

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