Multiplexers satisfy high-port-count demands

Edited by the Electronicstalk editorial team May 24, 2002

Analog Devices has a new series of 32-channel and dual-16-channel CMOS analogue multiplexer integrated circuits for telecomms network systems.

Analog Devices has a new series of CMOS 32-channel/dual-16-channel analogue multiplexer integrated circuits for telecomms network systems.

The high channel count of the ADG725/731 and the ADG726/732 allows engineers to design systems that multiplex more channels - simplifying PC board layout, reducing the component count, and enabling designs that require less space.

The devices were designed for high-channel control circuits, such as MEMS mirror control circuits for optical switches, which have higher port counts and greater multiplexing requirements.

The ADG725/731 and ADG726/732 are well suited to these applications because they allow a single control circuit to connect a higher number of channels without increasing board size and design complexity.

The new devices are all monolithic 32-channel/dual-16-channel analogue Multiplexers.

The ADG725/731 have serially controlled three-wire interfaces that are compatible with SPI, QSPI, Microwire and multiple DSP interface standards.

The ADG726/732 have parallel interfaces and are controlled by 4/5bit binary address lines.

The ADG731 and ADG732 switch one of 32 inputs to a common output.

The ADG725 and ADG726 can be configured either as dual multiplexers that switch one of 16 inputs to a common output, or as differential multiplexers that switch one of 16 differential inputs to a differential output.

These devices all use an enhanced submicron process that provides low power dissipation with high switching speed and very low resistance and leakage currents.

They operate from a single supply of 1.8 to 5.5V and +/- 2.5V dual supplies.

The ADG726/732 are fully released with the ADG725/731 due to release in June 2002.

All products are available in 48-lead thin quad flat pack (TQFP) and chip scale (CSP) packaging.

The ADG726/732 are priced at $4.51 per unit in 1000-piece quantities, and the ADG725/731 are priced at $4.59 per unit in 1000-piece quantities.