Analog switching ICs suit precision signals

Vishay has released a trio of precision low-voltage monolithic CMOS analog switching ICs that combine a wide voltage range, low leakage, and tight on-resistance matching for precision signal switching and routing.

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The three parts are configured as an 8-channel analog multiplexer (DG9051), a dual 4-channel analog multiplexer (DG9052), and a triple 2-channel single-pole/double-throw (SPDT) analog switch (DG9053). The new devices are intended for use in end products including cell phones.

All three devices feature a wide input voltage range of 2.7 V to 12 V for single-supply implementations and ±2.7 V to ±6 V for dual-supply implementations. Built on Vishay’s proprietary high-density process, the new devices support bidirectional signals and rail-to-rail analog signal handling. These characteristics, along with the wide voltage range, offer significant flexibility to circuit designers.

The CMOS logic compatible control inputs of the DG9051, DG9052, and DG9053 have guaranteed 2-V logic high/0.8-V logic low when operating from a single 5-V or dual ±5-V power supplies, and 2.4-V logic high/0.8-V logic low with 12-V power supplies. On-resistance ranges as low as 30 Ω depending on the power supply configuration, with guaranteed low on-resistance matching as low as 5 Ω.

Packaged in the TSSOP-16 case, the devices have lead (Pb)-free terminations and are pin-compatible with 74HC4051/2/5. Samples and production quantities of the new analog switches/multiplexers are available now.

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© 2012 Penton Media Inc.


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