GENERAL DESCRIPTION
TheALD4211/4212/4213 are designed for precision applications such as charge amplifiers, sample and hold amplifiers, data converter switches, and programmable gain amplifiers. APPLICATIONS
INFORMATION The ALD4211/4212/4213 operate with a standard single power supply from +3V to +12Volts. Functionality extends down to a +2 volt power supply making it suitable for lithium battery or rechargeable battery operated systems where power, efficiency, and performance are important design considerations. Break-before-make switching is guaranteed with single supply operation. The ALD4211/4212/4213 may also be used with dual power supplies from ±1.5 to ±6 volts. With special charge balancing and charge cancellation circuitry on chip the ALD4211/ALD4212/ALD4213 were developed for ultra low charge injection applications. Using a 200pF sampling capacitor, very fast precise signal acquisition may be achieved. With ultra low quiescent current, these switches interface directly to CMOS logic levels from microprocessor or logic circuits.