ADG333A データシートの表示（PDF） - Analog Devices

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ADG333A

Quad SPDT Switch

Analog Devices 

APPLICATION INFORMATION

ADG333A SUPPLY VOLTAGES

The ADG333A can operate from a dual or signal supply. VSS

should be connected to GND when operating with a single

supply. When using a dual supply, the ADG333A can also

operate with unbalanced supplies; for example VDD = 20 V and

VSS = −5 V. The only restrictions are that VDD to GND must not

exceed 30 V, VSS to GND must not drop below −30 V, and VDD

to VSS must not exceed +44 V. It is important to remember that

the ADG333A supply voltage directly affects the input signal

range, the switch on resistance and the switching times of the

part. The effects of the power supplies on these characteristics

can be clearly seen from the Typical Performance Characteristics

curves.

ADG333A

POWER SUPPLY SEQUENCING

When using CMOS devices, care must be taken to ensure

correct power-supply sequencing. Incorrect power-supply

sequencing can result in the device being subjected to stresses

beyond those listed in the Absolute Maximum Ratings. This is

also true for the ADG333A. Always turn on VDD first, followed

by VSS and the logic signals. An external signal within the maxi-

mum specified ratings can then be safely presented to the source

or drain of the switch

Rev. A | Page 11 of 12

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