DG441DJ+ - Quad SPST Analog Switch | Vishay | 16-DIP
MPN: DG441DJ+ ✓ ActiveDG441DJ+ Overview
An analog switch is a semiconductor device that connects or disconnects an analog signal path under digital control. A single-pole single-throw, or SPST, switch provides one independently controlled conducting path. As a CMOS analog switch, the DG441DJ+ belongs to the interface IC category and uses MOSFET structures to achieve low on-resistance, low leakage, and low control power. Unlike a mechanical relay, it switches much faster and consumes no sustained coil energy.
Key electrical features include a low typical on-resistance of 85 Ω, on-resistance matching of 4 Ω maximum between switches, and on-resistance flatness of 9 Ω maximum over the signal range. The switch operates equally well in either direction. Low leakage of 80 pA and a switching time of 150 ns make it useful for precision signal routing, while the 16-pin DIP package supports conventional through-hole PCB assembly.
The manufacturer documentation describes improved DG201A and DG202-series compatibility, TTL/CMOS-compatible control logic, and single-supply capability. Different versions of the family documentation list different power-consumption figures, including 0.2 mW in legacy family material and 1.65 mW in revised documentation; the applicable production datasheet should therefore govern final design decisions. The verified product listing identifies the DG441DJ+ as a quad SPST switch in a 16-pin DIP package.
Typical uses include data-acquisition systems, sensor multiplexing, analog test equipment, sample-and-hold circuits, battery-powered instruments, and precision measurement front ends. The four independent switches can route four signals independently or be controlled in coordinated sequences. Because on-resistance can vary with signal voltage, analog engineers should account for the specified resistance and flatness when calculating gains and settling behavior.
A key design consideration is the relationship between control levels and supply voltage. TTL/CMOS-compatible logic simplifies interfacing, but the selected supply configuration and input levels must remain within the manufacturer limits. The DIP package also requires adequate spacing around the leads for soldering and cleaning, while signal traces should remain short to minimize added capacitance and coupling during the 150 ns switching transition.
This page consolidates manufacturer documentation, distributor identification, package information, and verified cross-reference information into an engineering-focused guide. It also distinguishes confirmed drop-in candidates from unsupported alternatives, making the comparison more useful than a basic distributor listing when PCB footprint, switch function, and supply compatibility must be verified before substitution.
Drop-in alternatives for DG441DJ+ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
DG441DJ-E3
✅ Drop-In📋 Reference alternative (not in catalog)
ADG441BNZ
✅ Drop-In📋 Reference alternative (not in catalog)
ALD4201PCL
✅ Drop-In📋 Reference alternative (not in catalog)
DG441DJ+ Maximum Ratings & Electrical Characteristics
| Number of Switches | 4 circuits |
| Switch Configuration | 4 independent SPST, normally closed |
| On-Resistance | 85 Ω typical |
| On-Resistance Matching | 4 Ω maximum between switches |
| On-Resistance Flatness | 9 Ω maximum over signal range |
| Off Leakage Current | 80 pA |
| Turn-On Time | 150 ns |
| Dual-Supply Voltage Range | 10 V to 30 V |
| Single-Supply Voltage Range | 4.5 V to 20 V |
| Power Consumption | 0.2 mW in legacy family documentation; 1.65 mW in revised documentation |
| ESD Tolerance | 2000 V minimum |
| Control Logic Compatibility | TTL/CMOS-compatible |
| Signal Conduction Direction | Bidirectional |
| Package | 16-pin DIP |
| Mounting Type | Through-hole |
| Manufacturer Document Revision | Data Sheet Rev. 5 for DG441 family |
| Lifecycle Status | Production |
DG441DJ+ 16-pin dip Pin Configuration Guide
Pin configuration for DG441DJ+ (16-pin dip package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for DG441DJ+.
Refer to the datasheet for full pin configuration.
Typical Applications
DG441DJ+ is suitable for 6 applications: Precision Data-Acquisition Multiplexing, Low-Power Sensor Signal Routing, Automated Test and Measurement Routing, Battery-Powered Portable Instruments, Sample-and-Hold Signal Selection, Industrial Control Signal Isolation.
Precision Data-Acquisition Multiplexing
The DG441DJ+ fits four-channel analog multiplexing because it provides four independent SPST paths, 85 Ω typical on-resistance, and 150 ns turn-on time. Each normally closed switch can route a sensor or conditioned input to a shared amplifier or converter, with control asserted in the required acquisition order. The 150 ns transition allows reasonably fast channel selection, while the 4 Ω maximum matching and 9 Ω maximum flatness help limit channel-dependent gain error. Designers should still include the 85 Ω path resistance in settling calculations, verify converter acquisition time, and check injected charge against the sensor source impedance.
Recommended
Low-Power Sensor Signal Routing
The DG441DJ+ is useful when a compact system must route several low-level sensor signals while keeping control power and leakage low. Its 80 pA leakage specification reduces the error contribution when switching high-impedance sources, and the family documentation reports low power consumption suitable for portable instruments. The normally closed topology can support fail-safe signal paths, but it also requires the designer to consider what remains connected during reset or power loss. Source impedance, dielectric absorption, off leakage, and injected charge should be checked before selecting this switch for very high impedance electrochemical or capacitive sensors.
Recommended
Automated Test and Measurement Routing
The DG441DJ+ can route test signals among DUT and instrumentation paths because its four SPST switches provide independent control and a 150 ns turn-on time. Bidirectional conduction also permits the same switch topology to connect either source or load-facing circuitry. The matching and flatness limits are more useful than a single nominal on-resistance value when comparing measurement channels, so calibration data can address residual gain variation. Keep the analog trace short and observe the manufacturer's restrictions on signal amplitude, supply sequencing, and control levels to prevent switching transients from corrupting measurements.
Recommended
Battery-Powered Portable Instruments
The DG441DJ+ is suitable for portable measurement equipment because its CMOS control architecture is designed for low power consumption and the revised family documentation reports 1.65 mW. Four switch channels can replace multiple discrete relay positions while adding fast electronic control. The single-supply range of 4.5 V to 20 V supports integration into systems powered from common laboratory or portable rails. Because the exact DG441DJ+ quiescent and control-current figures are not included in the supplied results, battery-life calculations should use the production datasheet and the actual enable-state duty cycle.
Recommended
Sample-and-Hold Signal Selection
The DG441DJ+ can select among several conditioned inputs in a sample-and-hold or measurement front end because its fast 150 ns turn-on behavior shortens the settling interval between channel selections. The 85 Ω typical on-resistance contributes to source loading, so the selected amplifier or capacitor should have a suitable input impedance and acquisition time. Bidirectional operation allows the same device to be used around the sampling node in more than one topology, subject to the switch's absolute maximum ratings. Verify injected charge, bandwidth, and off isolation in the applicable datasheet before using the device with wideband or high-gain signals.
Recommended
Industrial Control Signal Isolation
The DG441DJ+ can isolate four low-voltage analog channels within an industrial controller when the control logic is compatible with the selected supply configuration. Fast switching supports deterministic routing, while the 16-pin DIP package makes it straightforward to assemble in legacy control boards. Normally closed behavior can preserve a defined connection during control-board reset, which may be desirable for safety-related signal paths but can also connect an active output unintentionally. Engineers should define default states, analyze power-up behavior, and keep switched nodes within the verified 10 V to 30 V dual or 4.5 V to 20 V single-supply limits.
Recommended
Recommended Products Summary
Engineering reference data for DG441DJ+ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DG441DJ-E3 | ADG441BNZ | ALD4201PCL |
|---|---|---|---|---|
| Package | 16-pin DIP | 16-pin DIP | 16-pin DIP | 16-pin DIP |
| Brand | Vishay Intertechnology | Vishay Intertechnology | Analog Devices | Microchip Technology |
| Switch Configuration | Quad independent SPST, normally closed | Quad independent SPST | Quad SPST | Quad SPST |
| Number of Circuits | 4 circuits | 4 circuits | 4 circuits | 4 circuits |
Key Differentiators
- Four independent bidirectional SPST paths in one package (vs ALD4201PCL)
- Guaranteed channel matching and signal-range flatness (vs ADG441BNZ)
- Documented low-leakage behavior for precision routing (vs DG441DJ-E3)
- Legacy-compatible DIP implementation (vs ADG441BNZ)
Design Notes
Do not assume that every switch sharing the 16-pin DIP outline has identical behavior. The DG441DJ is normally closed, so its conductive state can persist when control is inactive or during reset. Confirm the control truth table, normally closed or normally open status, and absolute maximum signal limits before fitting it to a board. If power-down behavior is safety-critical, add external pull resistors or a separate isolation stage rather than relying on an unpowered CMOS switch to remove the connection.
Include the 85 Ω typical on-resistance and the specified 4 Ω maximum matching in amplifier-gain and calibration calculations. For high-impedance sources, leakage of 80 pA creates an error proportional to source impedance, and injected charge can create a transient when the switch changes state. Keep analog traces short, use a stable return path, and add the downstream capacitance and switch capacitance to the settling model. Use the manufacturer timing and charge-injection values before setting the highest usable control rate.
Choose the supply configuration only after checking the signal and control levels. The verified DG441 family information identifies 10 V to 30 V dual-supply operation and 4.5 V to 20 V single-supply operation, with TTL/CMOS-compatible control. Provide adequate bypassing at the supply pins and keep the control-reference and analog-return connections low impedance. Because the supplied sources show 0.2 mW and 1.65 mW power figures for different family-document revisions, use the exact production datasheet for current-based battery and thermal calculations.
The 16-pin DIP footprint supports straightforward through-hole assembly, but pin spacing should be checked against the actual lead geometry and any socket or socketed module. Route switched analog nodes away from clock, relay, and switching-power traces, and place any required bypass components close to the supply pins. If replacing the DG441DJ+ with an alternative, compare the physical lead dimensions and pin numbering from the alternative's mechanical drawing rather than relying on DIP outline assumptions alone.
Compliance Information
The supplied verified results do not explicitly state material-compliance declarations for the exact DG441DJ+. AEC-Q100 is not applicable because the DG441 is an interface analog switch rather than an automotive-qualified device.
