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Home > Products > Integrated Circuits (ICs) > Interface > Analog Switches, Multiplexers, Demultiplexers

Vishay Siliconix DG401DY

Name: DG401DY
Brand: Vishay Siliconix
SKU: DG401DY
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DG401DY

Manufacturer:: Vishay Siliconix

Category:: Analog Switches, Multiplexers, Demultiplexers

Package:: 16-SOIC (0.154", 3.90mm Width)

Datasheet:: DG401DY.pdf

Description:: IC SWITCH SPST-NOX2 45OHM 16SOIC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

DG401DY from Maxim Integrated is a dual, high-speed, normally open analog switch IC designed for precision signal routing in bipolar or single-supply systems. It features 20Ω typical on-resistance, 2Ω maximum on-resistance matching between channels, 15pC max charge injection, and operates from ±4.5V to ±20V or +10V to +30V supplies - enabling use in sample-and-hold circuits and battery-operated test equipment.

For engineers reviewing the DG401DY datasheet, DG401DY pinout, DG401DY application, or DG401DY equivalent, key selection criteria include guaranteed r_DS(ON) flatness (≤3Ω), rail-to-rail analog signal handling (±15V), TTL/CMOS logic compatibility, and low off-leakage (<5nA at +85°C) in industrial temperature-grade DIP packaging.

Technical Context

The DG401DY implements two independent SPST analog switches fabricated in a 44V silicon-gate process, with substrate tied to V+. Its control logic accepts TTL/CMOS-level inputs referenced to VL = +5V, supporting both unipolar and bipolar supply configurations without level-shifting circuitry.

Each switch conducts bidirectionally with matched on-resistance and minimal signal distortion: on-resistance flatness is guaranteed ≤3Ω over the full ±15V analog range, and charge injection is tightly controlled at ≤15pC, critical for low-glitch sampling in precision data acquisition systems.

Key Specifications

Parameter	Value and Actual Design Meaning
On-Resistance (r_DS(ON))	20Ω typ / 30Ω max - ensures minimal signal attenuation and gain error in precision analog paths
On-Resistance Match	≤2Ω max - enables accurate differential signal switching and matched channel performance
On-Resistance Flatness	≤3Ω max over ±15V - maintains consistent gain and linearity across full analog input range
Charge Injection	≤15pC - reduces sampling glitch and settling time in S/H and multiplexer applications
Off-Leakage Current	<5nA at +85°C - preserves accuracy in high-impedance sensor interfaces and long-hold circuits
Switching Speed	t_ON ≤150ns, t_OFF ≤100ns - supports high-throughput signal routing in automated test equipment
Analog Signal Range	±15V - fully rail-to-rail operation with ±15V supplies, compatible with standard op-amp signal levels

Pinout & Package

Package: 16-pin plastic DIP (0.300" wide), operating temperature range –40°C to +85°C.

Pin/Terminal	Circuit Role	Design Meaning
1, 8	D1, D2 (Drain)	Analog output terminals - connect to downstream circuitry; bidirectional conduction path
2, 10	S1, S2 (Source)	Analog input terminals - accept rail-to-rail signals from V− to V+; electrically symmetric with drains
9, 16	IN1, IN2	Digital control inputs - TTL/CMOS-compatible; active-high logic controls switch closure
11	V+	Positive supply input - also connected to substrate; must be powered first during sequencing
12	VL	Logic supply reference - fixed at +5V for TTL compatibility; not tied to V+ unless explicitly configured
13	GND	Ground reference - common return for logic and analog sections; separate from power ground in mixed-signal layouts
14	V−	Negative supply input - establishes lower analog rail; required for bipolar operation
2–7, 15	N.C.	Not internally connected - no internal bond wires; must remain unconnected per datasheet

Key Features

Feature	Design Value
Rail-to-rail analog signal handling	Supports ±15V input signals with no clipping - eliminates need for external level-shifting in ±15V systems
Guaranteed on-resistance matching	≤2Ω max mismatch between S1/D1 and S2/D2 - enables precise differential switching without calibration
Low charge injection	≤15pC - minimizes voltage step on hold capacitors, reducing acquisition time in sample-and-hold stages
Bipolar or single-supply operation	±4.5V to ±20V or +10V to +30V - simplifies power architecture in mixed-voltage test and control systems
TTL/CMOS logic compatibility	VL = +5V input threshold - allows direct interface with microcontrollers and FPGAs without level translators

Applications

Sample-and-Hold Circuits	Test Equipment
Use Scenario: Precision ADC front-end where analog input is sampled onto a hold capacitor before conversion. IC Role / Device Role / Timing Role: DG401DY acts as the acquisition switch, connecting sensor signal to hold capacitor with minimal charge injection and on-resistance error. Use Value: ≤15pC charge injection and ≤3Ω r_FLAT(ON) ensure sub-LSB settling and linearity retention in 16-bit+ data acquisition systems.	Use Scenario: Automated test equipment requiring fast, repeatable routing of stimulus and response signals across multiple DUT channels. IC Role / Device Role / Timing Role: DG401DY serves as a reconfigurable signal path selector, enabling programmable interconnection of sources, loads, and measurement nodes. Use Value: 150ns t_ON/100ns t_OFF and <5nA off-leakage at +85°C support high-throughput testing with minimal crosstalk or leakage-induced drift.
Guidance and Control Systems	Audio Signal Routing
Use Scenario: Analog feedback loop conditioning in aerospace or industrial motion controllers, where signal integrity and reliability under temperature stress are critical. IC Role / Device Role / Timing Role: DG401DY isolates or selects sensor inputs (e.g., resolver, synchro, or potentiometer outputs) prior to conditioning amplifiers. Use Value: –40°C to +85°C rating, <5nA off-leakage at +85°C, and 44V process robustness ensure stable operation in extended environmental profiles.	Use Scenario: Professional audio mixing console with programmable analog signal path selection between mic preamps, effects loops, and output buses. IC Role / Device Role / Timing Role: DG401DY functions as a low-distortion analog crosspoint switch, routing line-level signals without audible artifacts. Use Value: 20Ω typical r_DS(ON), bidirectional conduction, and <12pF off-capacitance preserve frequency response and channel separation up to 20kHz.

Sample-and-Hold Circuits

Test Equipment

Use Scenario: Precision ADC front-end where analog input is sampled onto a hold capacitor before conversion.

IC Role / Device Role / Timing Role: DG401DY acts as the acquisition switch, connecting sensor signal to hold capacitor with minimal charge injection and on-resistance error.

Use Value: ≤15pC charge injection and ≤3Ω r_FLAT(ON) ensure sub-LSB settling and linearity retention in 16-bit+ data acquisition systems.

Use Scenario: Automated test equipment requiring fast, repeatable routing of stimulus and response signals across multiple DUT channels.

IC Role / Device Role / Timing Role: DG401DY serves as a reconfigurable signal path selector, enabling programmable interconnection of sources, loads, and measurement nodes.

Use Value: 150ns t_ON/100ns t_OFF and <5nA off-leakage at +85°C support high-throughput testing with minimal crosstalk or leakage-induced drift.

Guidance and Control Systems

Audio Signal Routing

Use Scenario: Analog feedback loop conditioning in aerospace or industrial motion controllers, where signal integrity and reliability under temperature stress are critical.

IC Role / Device Role / Timing Role: DG401DY isolates or selects sensor inputs (e.g., resolver, synchro, or potentiometer outputs) prior to conditioning amplifiers.

Use Value: –40°C to +85°C rating, <5nA off-leakage at +85°C, and 44V process robustness ensure stable operation in extended environmental profiles.

Use Scenario: Professional audio mixing console with programmable analog signal path selection between mic preamps, effects loops, and output buses.

IC Role / Device Role / Timing Role: DG401DY functions as a low-distortion analog crosspoint switch, routing line-level signals without audible artifacts.

Use Value: 20Ω typical r_DS(ON), bidirectional conduction, and <12pF off-capacitance preserve frequency response and channel separation up to 20kHz.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual SPST analog switch applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ADG1419BRZ	Single-supply only (+5V to +36V); higher on-resistance (4.7Ω typ); integrated fault protection	Preferred in high-voltage unipolar systems where overvoltage tolerance is required; not suitable for ±15V bipolar rails	Select ADG1419BRZ when fault-protected single-supply routing is needed; DG401DY remains optimal for legacy ±15V instrumentation designs.
TS5A23157DGSR	Lower voltage range (1.65V to 5.5V); faster switching (45ns t_ON); smaller 10-pin VSSOP package	Targeted at portable, low-power, 3.3V/5V digital-audio or USB peripheral signal routing - not rated for industrial temperature or high-voltage analog rails	Choose TS5A23157DGSR for space-constrained, low-voltage consumer electronics; DG401DY is specified for industrial-grade bipolar analog signal integrity.

Compared with ADG1419BRZ and TS5A23157DGSR, the DG401DY uniquely supports true bipolar ±15V analog operation with guaranteed on-resistance flatness and low charge injection - making it irreplaceable in precision test, military radio, and guidance system signal chains where rail-to-rail fidelity and temperature-stable matching are non-negotiable.

Availability

DG401DY is available at Aetrix Electronics and suitable for sample-and-hold circuits, automated test equipment, and guidance and control systems requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for DG401DY includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and computing applications.

The DG401DY belongs to Maxim's legacy high-speed analog switch product line, engineered for precision signal routing in demanding instrumentation, defense, and test environments where rail-to-rail operation and parameter matching are essential.

FAQ

What is the operating temperature range for the DG401DY?

The DG401DY is rated for operation from –40°C to +85°C. This industrial temperature grade is confirmed in the Ordering Information table and supported by electrical characteristics tested across that full range, including off-leakage current <5nA at +85°C and on-resistance flatness ≤3Ω. The DG401DY uses the same die as other DG401 variants but is specifically packaged in a 16-pin plastic DIP qualified for this temperature span.

Does the DG401DY support rail-to-rail analog signal switching?

Yes, the DG401DY supports rail-to-rail analog signal switching: its analog signal range is specified as ±15V when operated from ±15V supplies, and it handles signals from V− to V+ without clipping. This capability is enabled by its 44V silicon-gate process and verified in the Absolute Maximum Ratings and Electrical Characteristics tables - confirming full utilization of the supply rails for both input and output signals.

What logic voltage level is required to drive the DG401DY control inputs?

The DG401DY requires VL = +5V applied to Pin 12 for TTL-compatible operation; digital inputs IN1 and IN2 (Pins 9 and 16) then respond to standard TTL thresholds (V_INH ≥ +2.4V, V_INL ≤ +0.8V). If VL is tied to V+, CMOS-level thresholds apply. This dual-mode logic interface is documented in the "Logic Inputs" section and Electrical Characteristics table under I_INH/I_INL test conditions.

Can the DG401DY be used with a single +12V supply?

Yes, the DG401DY supports single-supply operation from +10V to +30V. With V+ = +12V and V− = GND (0V), it switches analog signals from 0V to +12V. The datasheet confirms rail-to-rail capability in single-supply mode, and Typical Operating Characteristics (Figure MAX401-3) explicitly plots on-resistance vs. V_D for V+ = 12V, V− = 0V - validating functionality across the full 0V–12V range.

What is the maximum allowable voltage difference between V+ and V− for the DG401DY?

The absolute maximum voltage difference between V+ and V− is 44V, as stated in the Absolute Maximum Ratings table under "V+" (referenced to V−). This limit arises from the 44V silicon-gate process and applies regardless of whether the device is used in bipolar (e.g., +20V/–20V) or single-supply (e.g., +30V/0V) configurations - ensuring safe operation within that total differential constraint.

DG401DY Specifications

Product attributes: Attribute value

Manufacturer:: Vishay Siliconix

Series:: -

Packaging:: Tube

Product Status:: Obsolete

Switch Circuit:: SPST - NO

Multiplexer/Demultiplexer Circuit:: 1:1

Number of Circuits:: 2

On-State Resistance (Max):: 45Ohm

Channel-to-Channel Matching (ΔRon):: -

Voltage - Supply, Single (V+):: 13V ~ 36V

Voltage - Supply, Dual (V±):: ±7V ~ 22V

Switch Time (Ton, Toff) (Max):: 150ns, 100ns

-3db Bandwidth:: -

Charge Injection:: 60pC

Channel Capacitance (CS(off), CD(off)):: 12pF, 12pF

Current - Leakage (IS(off)) (Max):: 500pA

Crosstalk:: -94.8dB @ 1MHz

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-SOIC

DG401DY FAQ

1.How can I place an order for DG401DY through Aetrix?

Please submit a Request for Quotation (RFQ) for DG401DY on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for DG401DY reliable?

The price and inventory of DG401DY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG401DY is usually 5 days.

3.What payment methods are accepted for DG401DY?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG401DY transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DG401DY?

DG401DY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DG401DY order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for DG401DY?

For technical support, including DG401DY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG401DY requirements.

6.How does Aetrix verify that DG401DY is sourced from the original manufacturer or authorized distributors?

All DG401DY products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DG401DY meets industry standards.

7.What is the process for return or replacement of DG401DY?

All DG401DY units undergo pre-shipment inspection (PSI). If there is an issue with DG401DY, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The DG401DY part is unused and in its original packaging.

Return procedure for DG401DY:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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