DG444: Monolithic, Quad SPST, CMOS Analog Switches

The DG444 and DG445 monolithic CMOS analog switches are drop-in replacements for the popular DG211 and DG212 series devices. They include four independent single pole single throw (SPST) analog switches and TTL and CMOS compatible digital inputs.

These switches feature lower analog ON resistance (<85Ω) and faster switch time (tON <250ns) compared to the DG211 and DG212. Charge injection has been reduced, simplifying sample and hold applications.

The improvements in the DG444 series are made possible by using a high voltage silicon-gate process. An epitaxial layer prevents the latch-up associated with older CMOS technologies. The 44V maximum voltage range permits controlling ±20V signals when operating with ±20V power supplies.

The four switches are bilateral, equally matched for AC or bidirectional signals. The ON resistance variation with analog signals is quite low over a ±5V analog input range. The switches in the DG444 and DG445 are identical, differing only in the polarity of the selection logic.

Key Features
  • ON Resistance (Max) 85Ω
  • Low Power Consumption (PD) <35µW
  • Fast Switching Action
    • tON (Max) 250ns
    • tOFF (Max, DG444) 140ns
  • Low Charge Injection
  • Upgrade from DG211, DG212
  • TTL, CMOS Compatible
  • Single or Split Supply Operation
  • Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
  • Audio Switching
  • Battery Operated Systems
  • Data Acquisition
  • Hi-Rel Systems
  • Sample and Hold Circuits
  • Communication Systems
  • Automatic Test Equipment
Typical Diagram
Application Notes
TitleTypeUpdatedSizeOther Languages
AN557: Recommended Test Procedures for Analog SwitchesPDF13 Nov 2014137 KB
AN535: Design Considerations for a Data Acquisition System (DAS)PDF13 Nov 2014851 KB
AN520: CMOS Analog Multiplexers and Switches; Specifications and Applications ConsiderationsPDF13 Nov 2014120 KB
AN1034: Analog Switch and Multiplexer ActionsPDF13 Nov 2014166 KB
Order Information
Part NumberPackage TypeWeight(g)PinsMSL RatingPeak Temp (°C)RoHS Status
DG444DJ16 Ld PDIP1.016N/ANA
DG444DVZ16 Ld TSSOP0.054161260RoHS
DG444DVZ-T16 Ld TSSOP T+R0.054161260RoHS
DG444DY16 Ld SOIC0.1416240
DG444DY-T16 Ld SOIC T+R0.1416240
DG444DYZ16 Ld SOIC0.14163260RoHS
DG444DYZ-T16 Ld SOIC T+R0.14163260RoHS
16 Ld PDIP HI-508
16 Ld TSSOP T+R ISL84523
16 Ld SOIC T+R ISL84523
DG445
AN557: Recommended Test Procedures for Analog Switches 13 Nov 2014
AN535: Design Considerations for a Data Acquisition System (DAS) 13 Nov 2014
AN520: CMOS Analog Multiplexers and Switches; Specifications and Applications Considerations 13 Nov 2014
AN1034: Analog Switch and Multiplexer Actions 13 Nov 2014