DG445 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.

DG445 特点

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)

DG445 应用

Audio Switching
Battery Operated Systems
Data Acquisition
Hi-Rel Systems
Sample and Hold Circuits
Communication Systems
Automatic Test Equipment

DG445 芯片订购指南

芯片型号	产品状态	温度范围	封装尺寸图	潮湿敏感度等级MSL	美元价格US $
DG445DVZ	量产	工业级	16 Ld TSSOP	1	0.71
DG445DVZ-T	量产	工业级	16 Ld TSSOP T+R	1	0.72
DG445DY	量产	工业级	16 Ld SOIC	1	0.81
DG445DY-T	量产	工业级	16 Ld SOIC T+R	1	0.82
DG445DYZ	量产	工业级	16 Ld SOIC	3	0.68
DG445DYZ-T	量产	工业级	16 Ld SOIC T+R	3	0.69
DG445DJ	停产	工业级	16 Ld PDIP	N/A	N/A