Malvern, Penna.—Vishay's DG2731, DG2732, and DG2733 dual single-pole/double-throw (SPDT) monolithic CMOS analog switches combine low-voltage operation with low on-resistance ratings in a small package size for signal-routing applications in portable and battery-powered end products.
The switches, working from a 1.6 to 4.3 volt input, are suited to cell phones, PDAs, portable media players, speaker headsets, hard drives, and modems. These switches feature an on-resistance of 400 milliohms and a “delta on-resistance” of just 30 milliohms ohms to minimize distortion and improve signal fidelity. Compatible with 1.6-volt logic, they easily interface with DSP or MCU control logic, and thus can be suitably powered by a single Li-ion battery.
The devices' latch-up protection is greater than 300 mA as tested per JESD78. These bidirectional switches feature guaranteed break-before-make connection. Nominal turn-on time is 50-ns turn-on time; turn-off time is 14 ns.
The DG2731 and DG2732 have two separate control pins with reverse control logic. The DG2731 has two switches that are normally open and two that are normally closed. The DG2732 has three normally open
switches and one normally closed. As with the DG2731, the DG2733 has two normally open and two normally closed switches, and it also features an EN pin (active high logic) to enable it.
The switches are available in DFN-10 with lead (Pb)-free nickel-palladium-gold device terminations, and MSOP-10 with 100 percent tin matte terminations, also lead (Pb)-free. Both terminations meet all JEDEC standards for reflow and MSL ratings. The switches are rated for operation over -40 to +85°C.
Click here for the product datasheet. Samples and production quantities are available now, with lead times of eight to 12 weeks for larger orders. The switches are priced at $1.40 each in 1k pieces.
Vishay , 1-619-336-0860, www.vishay.com