Описание
Maxim’s redesigned DG421 monolithic analog switches now feature guaranteed on-resistance matching (3? max) between switches and on-resistance flatness over the signal range (4? max). These low onresistance switches (20? typ) conduct equally well in both directions. They guarantee a low charge injection of 15pC maximum and an ESD tolerance of 2000V minimum per Method 3015.7. Off leakage current over temperature has also been reduced (less than 5nA at +85°C). The DG421 are precision, dual CMOS switches with latchable logic inputs that simplify interfacing with microprocessors (µPs). The single-pole/singlethrow DG421 and double-pole/single-throw. Fast switching times (175ns for tON and 145ns for tOFF) and low power consumption (35µW max) make these parts ideal for battery-powered applications requiring µP-compatible switches. Operation is from a single +10V to +30V supply, or bipolar ±4.5V to ±20V supplies. Fabricated with the same 44V silicon-gate process, these switches have rail-to-rail signal handling capabilities.
- Plug-In Upgrades for Industry-Standard
- Improved r(DS)ON Match Between Channels (3? max)
- Guaranteed rFLAT(ON) Over Signal Range (4? max)
- Improved Charge Injection (15pC max)
- Improved Off Leakage Current Over Temperature (<5nA at +85°C)
- Withstands Electrostatic Discharge (2000V min) per Method 3015.7
- Low rDS(ON) (35? max)
- Single-Supply Operation +10V to +30V Bipolar-Supply Operation ±4.5V to ±20V
- Low Power Consumption (35µW max)
- Rail-to-Rail Signal Handling Capability
- TTL/CMOS-Logic Compatible
