DG441DY+ - 4-Channel SPST Analog Switch | Analog Devices
料号： DG441DY+ ✓ 量产中DG441DY+ 概述
An analog switch is a semiconductor device that connects or disconnects signal paths under digital control. The DG441DY+ belongs to the analog-switch hierarchy, where it functions as an interface IC between low-power control logic and external analog signals. Its normally closed configuration provides a defined signal connection before the control input commands a change of state, making it useful in routing, sampling, test, and signal-isolation systems.
The device uses four independent SPST-NC channels rather than a multiplexer arrangement. According to the Analog Devices DG441-DG442 datasheet, the redesigned DG441 family provides on-resistance matching of 4 Ω maximum between switches and on-resistance flatness of 9 Ω maximum over the signal range. Each channel conducts equally well in either direction, which supports signal-path designs where input and output roles may change.
The DG441DY+ is specified for low power consumption of 1.65 mW and low charge injection of 10 pC maximum. Charge injection is important when switching precision, high-impedance analog nodes because control-clock energy can otherwise appear as an unwanted voltage step. The device also has an ESD tolerance of 2000 V minimum, providing a defined electrostatic-protection capability for exposed analog interfaces.
Typical applications include battery-powered test equipment, data-acquisition systems, audio and measurement signal routing, industrial control interfaces, and precision sensor connections. Four independent switches in one 16-SOIC package reduce board area and permit several signal paths to be switched under a common control interface. The dual-supply capability also allows designers to switch bipolar signals when the system provides the required positive and negative rails.
When designing a board around the DG441DY+, verify the normally closed signal state during power-up and ensure that every switched node remains within the specified 4.5 V to 20 V single-supply or 10 V to 30 V dual-supply limits. Use the manufacturer pinout and truth table for the exact DY package rather than assuming that a multiplexer's address and enable functions are present.
This product data consolidates manufacturer specifications, current distributor availability, package details, and verified drop-in replacement information. It also provides application guidance and selection trade-offs that help engineers move from the datasheet to a production-ready PCB design.
直接替换替代料： DG441DY+ ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： DG441DY+ （相同外形与封装尺寸） ——差异在于 Package.
DG441DYZ
✅ 直接替换联系询价
查看数据手册 →DG441DY-E3
✅ 直接替换📋 参考替代料（不在目录中）
DG441DY-T1-E3
✅ 直接替换📋 参考替代料（不在目录中）
DG441DYZA-T
✅ 直接替换📋 参考替代料（不在目录中）
DG441DY+ 最大额定值与电气特性
| Number of Switches | 4 circuits |
| Switch Configuration | 1:1 SPST-NC per channel |
| Maximum On-Resistance | 85 ohm |
| On-Resistance Matching Between Switches | 4 ohm maximum |
| On-Resistance Flatness Over Signal Range | 9 ohm maximum |
| Charge Injection | 10 pC maximum |
| Power Consumption | 1.65 mW |
| ESD Tolerance | 2000 V minimum |
| Single-Supply Voltage Range | 4.5 V to 20 V |
| Dual-Supply Voltage Range | 10 V to 30 V |
| 封装 | 16-SOIC, 16 pins |
| Package Width | 3.90 mm |
| 安装类型 | Surface mount |
| Production Status | Production |
| Signal Direction | Bidirectional |
DG441DY+ 3.90 mm 引脚配置指南
DG441DY+（3.90 mm 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： DG441DY+.
请参阅 数据手册 以查看完整引脚配置。
典型应用
DG441DY+ 适用于 6 应用s: Battery-Powered Test and Measurement Equipment, Precision Data-Acquisition Systems, Industrial Sensor and Control Interfaces, Audio and Low-Level Signal Routing, Automated Test Equipment Signal Isolation, Dual-Supply Bipolar Analog Interfaces.
Battery-Powered Test and Measurement Equipment
The DG441DY+ fits portable test equipment because four independent SPST-NC paths can route signals without requiring four separate switch packages. Its 1.65 mW power consumption is especially useful in battery-operated systems, while 85 Ω maximum on-resistance is manageable for many source and measurement impedances. The normally closed configuration preserves a defined connection before control is asserted. Designers should verify the selected logger input resistance, control levels, and available 4.5 V to 20 V supply before finalizing the routing matrix.
推荐
Precision Data-Acquisition Systems
The DG441DY+ is useful for selecting sensors or test points in a data-acquisition front end because its 4 Ω maximum on-resistance matching limits channel-to-channel variation. The 9 Ω maximum flatness specification helps preserve signal integrity across the operating range, and 10 pC maximum charge injection reduces unwanted steps at sensitive nodes. Four channels in one 16-SOIC package conserve board area. The analog source impedance must be checked against the 85 Ω switch resistance, especially when targeting high measurement accuracy.
推荐
Industrial Sensor and Control Interfaces
The DG441DY+ can route four industrial sensor or control signals within a compact interface module while supporting 4.5 V to 20 V single-supply operation. Its bidirectional SPST channels support signal paths where either side may source or receive, and the 2000 V minimum ESD tolerance provides a stated robustness figure for exposed interfaces. Designers must still apply appropriate board-level surge and ESD protection, maintain signal levels within the absolute maximum ratings, and validate settling behavior for the selected control waveform.
推荐
Audio and Low-Level Signal Routing
The DG441DY+ can route low-level audio or instrumentation signals between four independent analog paths. Its bidirectional operation allows each SPST channel to conduct equally well in either direction, while 10 pC maximum charge injection helps limit control-related transients. The 85 Ω maximum on-resistance may be acceptable for many line-level audio paths but can create attenuation with low source impedances. A careful design should compare the switch resistance with the source impedance, buffer high-current outputs, and account for the normally closed state during startup.
推荐
Automated Test Equipment Signal Isolation
The DG441DY+ is suitable for isolating or connecting multiple test points in automated test equipment because each channel is independently controlled and normally closed. The 1.65 mW power consumption limits system overhead, while dual-supply operation from 10 V to 30 V supports bipolar test signals when required. Engineers should verify leakage, switching time, and control thresholds from the manufacturer datasheet because those details were not included in the supplied distributor extracts. Safe-state behavior must also be reviewed for each instrument configuration.
推荐
Dual-Supply Bipolar Analog Interfaces
The DG441DY+ supports bipolar signal interfaces when the board provides a documented 10 V to 30 V dual supply. Four normally closed channels can connect external analog circuitry without requiring a multiplexer address bus, simplifying control in systems where each path has a dedicated enable line. Bidirectional conduction and the 4 Ω maximum matching specification support repeatable channel behavior. The circuit still needs rail sequencing and fault protection if external inputs can exceed the switch's absolute maximum ratings before the control inputs take effect.
推荐
推荐产品汇总
工程参考数据： DG441DY+ ——对比、设计指导和合规信息。
选型指南
Use DG441DY when procurement or an existing approved BOM calls for the base Analog Devices ordering designation, after confirming its exact termination and packaging configuration. Consider Vishay DG441DY-E3 as a cross-brand footprint candidate, but review its complete datasheet for control thresholds, leakage, switching time, operating temperature, and lifecycle status. The Vishay DG441DY-T1-E3 and DG441DYZA-T ordering variants require the same detailed review. Do not select DG441CY+ when the required behavior is four independent SPST-NC channels because it is a multiplexer/demultiplexer configuration. For any production substitution, confirm the pinout, truth table, absolute maximum ratings, and supply sequencing rather than relying on package appearance alone.
与替代料对比
| 参数 | 本产品 | DG441DY | DG441DY-E3 | DG441DY-T1-E3 | DG441DYZA-T |
|---|---|---|---|---|---|
| Package | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC |
| Brand | Analog Devices | Analog Devices | Vishay Intertechnology | Vishay Intertechnology | Vishay Intertechnology |
| Number of Circuits | 4 circuits | 4 circuits | 4 circuits | 4 circuits | 4 circuits |
| Switch Circuit | SPST-NC, 1:1 | SPST-NC, 1:1 | SPST-NC, 1:1 | SPST-NC, 1:1 | SPST-NC, 1:1 |
| Maximum On-Resistance | 85 ohm | 85 ohm | 85 ohm | 85 ohm | 85 ohm |
| On-Resistance Matching Between Switches | 4 ohm maximum | 4 ohm maximum | 4 ohm maximum | 4 ohm maximum | 4 ohm maximum |
| On-Resistance Flatness | 9 ohm maximum over signal range | 9 ohm maximum over signal range | 9 ohm maximum over signal range | 9 ohm maximum over signal range | 9 ohm maximum over signal range |
| Single-Supply Voltage Range | 4.5 V to 20 V | 4.5 V to 20 V | 4.5 V to 20 V | 4.5 V to 20 V | 4.5 V to 20 V |
| Dual-Supply Voltage Range | 10 V to 30 V | 10 V to 30 V | 10 V to 30 V | 10 V to 30 V | 10 V to 30 V |
| Charge Injection | 10 pC maximum | 10 pC maximum | 10 pC maximum | 10 pC maximum | 10 pC maximum |
| Power Consumption | 1.65 mW | 1.65 mW | 1.65 mW | 1.65 mW | 1.65 mW |
| ESD Tolerance | 2000 V minimum | 2000 V minimum | 2000 V minimum | 2000 V minimum | 2000 V minimum |
关键差异点
- Four independent normally closed channels （对比 DG441CY+)
- Guaranteed channel matching （对比 DG441DY-E3)
- Low switching-induced charge （对比 DG441DY-T1-E3)
- Single- and dual-supply operation （对比 DG441DYZA-T)
设计说明
Do not substitute the DG441 normally closed function for the DG442 normally open function. The DG441DY+ channels remain connected until the corresponding control input changes state, so power-up, reset, and fault conditions can place unintended signals on the connected nodes. Review the manufacturer truth table against every possible controller state and add external isolation if a guaranteed disconnected state is required.
Account for the maximum 85 Ω on-resistance when selecting the signal source and downstream input. The switch resistance forms a divider with source impedance and can reduce signal amplitude, especially when driving a low-impedance load. The 4 Ω maximum matching and 9 Ω maximum flatness figures improve channel consistency, but they do not eliminate loading. Use a higher-impedance receiver or buffer the switched output when precision amplitude accuracy matters.
Keep switched analog traces short and connect the supply and ground pins with low-impedance copper paths. Place any bypass capacitors close to their associated pins, following the manufacturer's recommended layout and grounding guidance. Maintain clearance from high-current switching nodes because the 10 pC maximum charge injection can couple control-edge energy into nearby high-impedance analog traces through parasitic capacitance.
Validate the complete rail plan before selecting the single- or dual-supply configuration. The DG441DY+ supports 4.5 V to 20 V single supply and 10 V to 30 V dual supply, but the external signal excursion and control-input levels must remain valid in the chosen topology. For bipolar switching, sequence the supplies and control inputs so no external node exceeds the absolute maximum ratings.
合规信息
The supplied verified records identify the DG441DY+ ordering suffix and product family but do not provide explicit compliance declarations. Compliance fields are therefore left unknown rather than inferred.
