The DG441 and DG442 monolithic CMOS analog switches are drop-in replacements for the popular DG201A and DG202 series devices. They include four independent single pole single throw (SPST) analog switches, TTL and CMOS compatible digital inputs, and a voltage reference for logic thresholds.
These switches feature lower analog ON resistance (<85Ω) and faster switch time (tON <250ns) compared to the DG201A and DG202. Charge injection has been reduced, simplifying sample and hold applications.
The improvements in the DG441 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 40VP-P signals. Power supplies may be single ended from +5V to +34V, symmetrical supplies from ±5V to ±22V or asymmetrical supplies limited to a maximum differential voltage of 44V with a V+ max of 34V or a V- max of -25V.
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 DG441 and DG442 are identical, differing only in the polarity of the selection logic.
| 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 $ |
| DG442DJZ | 量产 | 工业级 | 16 Ld PDIP | N/A | 0.91 |
| DG442DVZ | 量产 | 工业级 | 16 Ld TSSOP | 1 | 0.87 |
| DG442DVZ-T | 量产 | 工业级 | 16 Ld TSSOP T+R | 1 | 0.88 |
| DG442DY | 量产 | 工业级 | 16 Ld SOIC | 1 | 1.01 |
| DG442DY-T | 量产 | 工业级 | 16 Ld SOIC T +R | 1 | 1.01 |
| DG442DYZ | 量产 | 工业级 | 16 Ld SOIC | 3 | 0.84 |
| DG442DYZ-T | 量产 | 工业级 | 16 Ld SOIC T +R | 3 | 0.86 |
| DG442DJ | 停产 | 工业级 | 16 Ld PDIP | N/A | N/A |