DG401DJ+ - Dual 45Ω High-Speed SPST Switch | Analog Devices
MPN: DG401DJ+ ✓ NakahandaDG401DJ+ Ulas
An analog switch is an interface IC that connects or isolates an analog signal without amplifying its voltage. The DG401 family belongs to the broader switch hierarchy that includes analog switches, multiplexers, and digital multiplexers. Its CMOS implementation provides low power consumption, while the high-speed switching characteristics make it useful in test equipment, sample-and-hold circuits, data acquisition systems, and precision signal routing.
Key features include two SPST, normally open switch circuits, a 1:1 signal configuration, on-resistance below 45 Ω, turn-on time below 150 ns, and a maximum supply rating of 44 V. The control inputs accept TTL-compatible or CMOS-compatible logic. Low charge injection reduces the unwanted voltage pulse that can disturb a sampled signal when the switch changes state.
The switch supports analog signals spanning up to 15 V while operating from a single supply. Its low on-resistance minimizes insertion loss and voltage drop in signal paths, while low leakage helps preserve the output when a channel is disconnected. The internal architecture is designed for low-power operation, which supports portable instrumentation and battery-powered test systems.
Typical uses include high-speed signal routing, multiplexed measurement systems, sample-and-hold circuits, industrial control interfaces, and laboratory or communication equipment. The dual independent configuration allows two separate signals to be controlled with one device, reducing component count when board space is constrained.
PCB design should keep analog traces short and provide a ground return close to the device. Control inputs must remain within their rated logic levels, and unused control or signal pins should be connected according to the manufacturer datasheet. Review voltage limits carefully because the 44 V maximum supply rating does not imply that all 15 V analog signals are safe under every operating condition.
This page combines the manufacturer's core switch characteristics, package and electrical details, practical routing guidance, application fit, and a structured comparison with qualified same-footprint alternatives to support faster component selection.
Mga alternatibo na pwedeng ilagay na DG401DJ+ — parehas na package, pin-to-pin na katugmang. Hindi kasama ang mga bahagi ng iba't-ibang package na nangangailangan ng pagpapaayos ng PCB.
Variante sa Seri na ito
Katulad na modelo sa serye na katugma sa pagpasok DG401DJ+ (parehas na form factor at footprint) — pagkakaiba sa Charge Injection, Mounting Type, Package.
MAX301CPE+
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
DG401DJ
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
DG401DJ
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
DG401DJ
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
DG401DJ
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
DG401DJ+ Mga Pinakamataas na Rating at Electrical Characteristics
| Number of Switch Circuits | 2 circuits |
| Switch Configuration | 1:1 SPST, normally open |
| On-Resistance | 45 Ω maximum |
| Maximum Supply Voltage | 44 V |
| Analog Signal Range | 15 V |
| Turn-On Time | 150 ns maximum |
| Off Leakage Current | 40 pA |
| Power Consumption | Milliwatt-level |
| Logic Compatibility | TTL and CMOS compatible |
| Supply Capability | Single supply |
| Technology | Monolithic CMOS |
| Packhaging | 16-pin PDIP |
| Bilang ng Pin | 16 pins |
| Uri ng Pagpapasok | Through-hole |
| Temperature Grade | Industrial |
| Charge Injection | Low |
Gabay sa Pin Configuration ng DG401DJ+ 16-pin pdip
Pin configuration para sa DG401DJ+ (16-pin pdip package). Ang pagnunumero ng pin, mga function, at connection diagram ay tinukoy sa datasheet ng manufacturer. Sumangguni dito para sa eksaktong footprint at mga alituntunin sa soldering.
Wala ng detalyadong pinout data na magagamit para sa DG401DJ+.
Sumangguni sa datasheet para sa buong pin configuration.
Tipikal na mga Gamit
DG401DJ+ ay nararapat para sa 6 aplikasyons: High-Speed Signal Routing, Sample-and-Hold Acquisition, Automated Test Equipment, Industrial Measurement Interface, Battery-Powered Data Acquisition, Communication Signal Isolation.
High-Speed Signal Routing
The DG401DJ+ is appropriate for high-speed signal routing because each of its two normally open SPST channels has a listed on-resistance of 45 Ω maximum and turn-on time below 150 ns. Place the switch close to the signal source to minimize PCB trace resistance and capacitance that would otherwise degrade edge response. TTL- and CMOS-compatible control inputs simplify interfacing with digital control logic. For high-speed or wideband signals, verify bandwidth, off isolation, capacitance, and charge injection under the actual source and load conditions, because switching time alone does not define total signal fidelity.
Inirekomenda
Sample-and-Hold Acquisition
The DG401DJ+ can form the routing element in a sample-and-hold acquisition path by connecting the measured input to the sampling network when its control signal is asserted. Its low charge injection is valuable because the control transition produces less unwanted disturbance at the held capacitor, while 40 pA off leakage limits the amount of signal lost while a channel is open. The 15 V analog signal range supports many laboratory and industrial inputs. Validate capacitor selection, acquisition time, settling behavior, dielectric absorption, and switch capacitance because the published 150 ns turn-on figure does not by itself guarantee a complete acquisition time.
Inirekomenda
Automated Test Equipment
The DG401DJ+ suits automated test equipment that must connect test signals quickly and disconnect them accurately between measurements. Two independent SPST paths allow one device to control separate resources, reducing the number of routing components on a measurement board. Its turn-on time below 150 ns supports rapid sequencing, and the 45 Ω maximum on-resistance limits the voltage drop across the switch at moderate current. The instrument designer should still budget for switch capacitance, leakage, charge injection, relay-style settling requirements, and the control-signal return path to achieve repeatable measurements at the required accuracy.
Inirekomenda
Industrial Measurement Interface
The DG401DJ+ is useful as an industrial measurement interface between a controller and externally connected analog signals. Its normally open configuration provides isolation between disconnected channels, while TTL- and CMOS-compatible control inputs permit operation across common logic systems. The monolithic CMOS implementation consumes milliwatt-level power, helping preserve the low-power character of portable or distributed instrumentation. Engineers should confirm that the 15 V analog signal range covers normal operating and fault conditions, that the 44 V supply maximum is never exceeded, and that protection components do not inject unacceptable leakage into sensitive measurements.
Inirekomenda
Battery-Powered Data Acquisition
The DG401DJ+ fits low-power data-acquisition front ends that need fast multiplexing without a continuously powered resistive divider in every channel. The two-channel SPST arrangement permits resource sharing between instruments or sensor inputs, and the low-power CMOS design supports milliwatt-level operation. Its 45 Ω maximum on-resistance is modest for many sensor and low-frequency measurement paths, while 40 pA off leakage helps preserve high-impedance node voltages. Confirm leakage over temperature, account for switch capacitance in the filter design, and select control signaling that remains valid at the minimum supply voltage used by the portable instrument.
Inirekomenda
Communication Signal Isolation
The DG401DJ+ can isolate communication-related analog paths by disconnecting inactive branches with its normally open SPST channels. The 45 Ω maximum on-resistance limits insertion loss in the connected state, while turn-on time below 150 ns permits prompt channel selection. Low off leakage reduces unintended coupling through an open switch, although overall channel isolation depends on capacitance, layout, frequency, and the surrounding circuit. Use short traces, maintain a continuous ground reference, and check that control-signal transitions cannot capacitively disturb the protected signal path. For high-frequency communication links, verify the complete frequency-domain isolation specification before deployment.
Inirekomenda
Buod ng mga Inirekomendang Produkto
Impormasyon ng Talumpati sa Engineering for DG401DJ+ — ikabit, gabay sa disenyo, at impormasyon ng pagsunod sa kautusan.
Paunawang Hanapin
Ikabit sa Mga Alternatibo
| Parametro | Ito ang Producto | MAX301CPE+ | DG401DJ | DG401DJ | DG401DJ | DG401DJ |
|---|---|---|---|---|---|---|
| Package | 16-pin PDIP | 16-pin PDIP | 16-pin PDIP | 16-pin PDIP | 16-pin PDIP | 16-pin PDIP |
| Brand | Analog Devices | Maxim Integrated | Vishay Intertechnology | Vishay Intertechnology | Temic | Silicon Labs |
| Number of Circuits | 2 | 2 | 2 | 2 | 2 | 2 |
| Switch Configuration | Dual SPST, normally open | Dual SPST | Dual SPST | Dual SPST | Dual SPST | Dual SPST |
| Turn-On Time | 150 ns maximum | 150 ns maximum | 150 ns maximum | 150 ns maximum | 150 ns maximum | 150 ns maximum |
Pangunahing mga Pagkakaiba
- Documented 45 Ω maximum on-resistance (kumpara saMAX301CPE+)
- Turn-on time below 150 ns (kumpara saMAX301CPE+)
- Published 40 pA off-leakage value (kumpara saMAX301CPE+)
- Dual normally open SPST configuration (kumpara saDG401CJ+)
Talaan ng Disenyo
Treat the 45 Ω maximum on-resistance as only one part of the signal-path design. Keep analog traces short, minimize stub branches, and provide a continuous ground reference near the DIP package. For high-speed or high-impedance signals, include switch capacitance, leakage, off isolation, and charge injection in the timing and noise budget rather than relying only on the 150 ns maximum turn-on specification.
The DG401DJ+ supports single-supply operation and accepts TTL- or CMOS-compatible control signals. Confirm that control thresholds remain valid at the minimum operating supply and across temperature. Never treat the 44 V maximum supply rating as a recommended operating point, and apply the stated 15 V analog signal range only after checking absolute-maximum and system fault conditions.
Use the manufacturer datasheet pin-description table to assign every one of the 16 PDIP terminals and maintain the package's standard through-hole footprint. Connect control inputs so that deassertion leaves the channels in the required normally open state. Route control and analog conductors to limit capacitive coupling, and use the application diagram in the manufacturer datasheet as the baseline when adding external protection or filtering.
A matching PDIP outline does not prove that a substitute is pin-to-pin compatible. Before replacing DG401DJ+, compare terminal names, common connections, control polarity, logic thresholds, supply limits, analog signal range, on-resistance, timing, leakage, and temperature grade. Also check manufacturer-specific ordering suffixes and markings because the same base MPN can be offered by more than one manufacturer.
Impormasyon ng Pagsunod sa Kautusan
The DG401DJ+ is listed in the industrial temperature grade. No explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declaration was confirmed, so these attributes remain unknown pending current manufacturer documentation.