Analog Devices Intros Multiplexers

CAMBRIDGE, Mass. -- Analog Devices Inc. has introduced a series of new CMOS 32-channel/dual 16- channel analog multiplexer integrated circuits for telecom 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 analog multiplexers: The ADG725/731 have serially controlled three-wire interfaces that are compatible with SPI(TM), QSPI(TM), MICROWIRE(TM), and multiple DSP interface standards. The ADG726/732 have parallel interfaces and are controlled by 4-/5-bit 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 sub micron 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 V to 5.5 V and +/- 2.5 V dual supplies. Analog Devices Inc.