DG445

Monolithic, Quad SPST, CMOS Analog Switches

Product Status: Mass Production

OVERVIEW

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)

PARAMETRICS

Parameters
DG445
Basic Information
生产状态
Mass Production
器件/通道数量
4
开关或MUX
Switch
配置
NO
开关类型
SPST
RDS (ON)
50 Ω
泄漏
0.08 nA
源电容 (pf)
4
IS
0.001 µA
VCC (单) (最小值) (V)
5
VCC (单) (最大值) (V)
34
资质级别
Standard
TON (ns)
120
TOFF (ns)
160
电荷注入 (pC)
1
漏电容
16 pF
双电源电压 (最小值)
±5 V
双电源电压 (最大值)
±20 V
供电电压Vcc范围 (V)
+5 to +34, ±5 to ±20
CAN 采样
YES
温度范围
-40 to +85

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