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Vishay Siliconix DG441DY
- Part No.:
- DG441DY
- Manufacturer:
- Vishay Siliconix
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG441DY.pdf
- Description:
- IC SWITCH SPST-NCX4 85OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,498
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Product details
Overview
DG441DY from Vishay Siliconix is a quad SPST analog switch with normally closed (NC) configuration, designed for high-speed, low-error analog and audio signal routing. It features 50 Ω typical on-resistance, 150 ns typical turn-on time, ±15 V dual-supply operation, and –1 pC charge injection-enabling precision sample-and-hold and battery-powered instrumentation.
For engineers reviewing the DG441DY datasheet, DG441DY pinout, DG441DY application, or DG441DY equivalent, key selection criteria include its NC topology, rail-to-rail analog signal range (±15 V), TTL/CMOS-compatible digital inputs, low leakage (<0.5 nA), and SOIC-16 package suitability for space-constrained data acquisition and medical instrument designs.
Technical Context
The DG441DY implements four independent bidirectional analog switches fabricated on a high-voltage silicon-gate process with epitaxial latchup protection. Each channel conducts equally in both directions when ON and blocks signals to supply rails when OFF.
Its logic interface accepts 0.8 V low / 2.4 V high thresholds compatible with TTL and CMOS, and it supports single-supply (12 V) or split-supply (±15 V) operation-enabling retrofit into legacy DG201A/DG202 sockets without redesign.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance | 50 Ω typ. at ±15 V supplies - ensures minimal signal attenuation and gain error in precision amplifiers and sensor interfaces. |
| Turn-On Time | 150 ns typ. - enables fast multiplexing in automatic test equipment and real-time data acquisition systems. |
| Charge Injection | –1 pC - critical for low pedestal error in sample-and-hold circuits and ADC front-ends. |
| Analog Signal Range | ±15 V - supports full rail-to-rail switching of bipolar signals without clipping. |
| Off-Leakage Current | 0.5 nA max. at full temperature range - preserves accuracy in high-impedance sensor and medical electrode paths. |
| Supply Voltage Range | V+ to V– = 44 V max - allows robust operation across industrial and aerospace voltage margins. |
| Digital Input Thresholds | 0.8 V low / 2.4 V high - ensures reliable interfacing with standard logic families without level-shifting. |
Pinout & Package
Package: 16-pin narrow-body SOIC (SOIC-16N), 7.5 mm × 10.3 mm footprint, surface-mount compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | IN1–IN4 | Digital control inputs for channels 1–4; active-high logic drives switch closure (NC type). |
| 5, 6, 7, 8 | S1–S4 | Source terminals - connected internally to common node when switch is closed (NC path). |
| 9, 10, 11, 12 | D1–D4 | Drain terminals - output side of each switch; carries analog signal when closed. |
| 13 | V+ | Positive supply rail - must be ≥2 V above highest analog signal for proper operation. |
| 14 | GND | Ground reference - serves as logic and analog return; not isolated from substrate. |
| 15 | V− | Negative supply rail - required for bipolar operation; sets lower analog signal limit. |
| 16 | NC | No-connect - internally unconnected; must remain floating or grounded per layout best practice. |
Key Features
| Feature | Design Value |
|---|---|
| Normally Closed (NC) Topology | Ensures fail-safe signal continuity during power loss or logic reset-critical in safety-critical medical monitoring paths. |
| Bidirectional Analog Conduction | Eliminates need for signal direction awareness in multiplexer design-simplifies PCB routing and firmware control. |
| Low Charge Injection (–1 pC) | Reduces hold-mode voltage step error in sample-and-hold circuits to <1 mV with 1 nF hold capacitor. |
| High Off-Isolation (60 dB) | Minimizes crosstalk between adjacent channels at 1 MHz-essential for multi-channel simultaneous sampling. |
| Single- or Dual-Supply Operation | Supports 12 V unipolar or ±15 V bipolar rails-enables reuse across legacy and new designs without power architecture changes. |
Applications
| Audio Switching | Data Acquisition |
|---|---|
Use Scenario: Routing microphone or line-level audio signals between multiple codecs or amplifier stages in portable instruments. IC Role / Device Role / Timing Role: Quad SPST NC switch providing seamless analog path selection with <–80 dB crosstalk at 20 kHz. Use Value: Preserves signal fidelity via 50 Ω on-resistance and <0.5 nA leakage-avoiding audible distortion or DC offset drift. | Use Scenario: Multiplexing sensor outputs (thermocouples, strain gauges) into a shared ADC channel in industrial PLC modules. IC Role / Device Role / Timing Role: Low-charge-injection analog switch enabling accurate sample-and-hold with <1 mV pedestal error. Use Value: Enables 16-bit effective resolution by minimizing switch-induced settling errors and leakage-induced offset. |
| Medical Instruments | Automatic Test Equipment |
Use Scenario: Isolating ECG electrode inputs during calibration or lead-off detection in patient monitors. IC Role / Device Role / Timing Role: Fail-safe NC switch maintaining default signal path until actively opened by microcontroller command. Use Value: Guarantees uninterrupted baseline monitoring during firmware boot or communication faults-meeting IEC 60601 safety requirements. | Use Scenario: Configuring stimulus/sense paths for DUT (device under test) pins in boundary-scan or functional test systems. IC Role / Device Role / Timing Role: High-speed analog switch enabling <200 ns channel reconfiguration for parallel test sequencing. Use Value: Reduces test cycle time by supporting 5 MHz switching rates while maintaining <60 dB off-isolation between test nodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4618ESE+ | NO (normally open) topology; 60 Ω on-resistance; 125 ns tON; requires external VREF for rail-to-rail analog swing. | Not suitable for fail-safe NC paths; better for low-leakage (<0.1 nA) high-impedance sensor buffering. | Select MAX4618ESE+ only if NO behavior and tighter leakage specs outweigh need for NC default state. |
| ADG441BRZ | NC topology; 45 Ω on-resistance; 140 ns tON; ±20 V supply rating; 0.5 pC charge injection. | Higher voltage tolerance and lower charge injection-but larger 16-lead SOIC footprint (10.2 mm × 7.6 mm vs. DG441DY's 10.3 mm × 7.5 mm). | Choose ADG441BRZ when extended ±20 V operation or sub-0.5 pC charge injection is mandatory; verify PCB pad compatibility. |
Compared with MAX4618ESE+ and ADG441BRZ, the DG441DY offers optimal balance of NC reliability, proven SOIC-16N footprint compatibility, and validated performance in legacy DG201A upgrade paths-making it preferred for cost-sensitive, space-constrained medical and test equipment where fail-safe continuity is non-negotiable.
Availability
DG441DY is available at Aetrix Electronics and suitable for audio switching, data acquisition, medical instruments, and automatic test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for DG441DY 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
Vishay Siliconix is a global semiconductor manufacturer specializing in discrete MOSFETs, analog switches, and high-reliability power components with emphasis on ruggedized process technologies.
The DG441DY belongs to Vishay's high-voltage silicon-gate analog switch product line, engineered specifically for precision signal routing in medical, test, and industrial systems demanding low on-resistance, ultra-low leakage, and fail-safe NC topology.
FAQ
What is the default switch state of the DG441DY?
The DG441DY is a normally closed (NC) analog switch: all four channels conduct by default when no logic signal is applied to their INx pins. Applying a logic high (≥2.4 V) to an INx pin opens that specific channel. This fail-safe behavior ensures signal continuity during power-up, reset, or controller failure-making DG441DY ideal for safety-critical paths in medical instruments and industrial controls.
Can the DG441DY operate from a single 12 V supply?
Yes, the DG441DY supports single-supply operation at 12 V (V+ = 12 V, V– = 0 V), delivering 100 Ω typical on-resistance and 300 ns typical turn-on time. In this mode, the analog signal range is 0 V to 12 V. The device maintains TTL/CMOS-compatible logic thresholds and retains low leakage (<0.5 nA), making DG441DY suitable for battery-powered data loggers and portable instrumentation without dual-rail supplies.
What is the maximum allowable voltage difference between V+ and V– for the DG441DY?
The DG441DY specifies a maximum V+ to V– differential of 44 V. For example, valid configurations include ±15 V (30 V total), +24 V / –10 V (34 V), or +30 V / –10 V (40 V). Exceeding 44 V risks permanent damage. This rating enables DG441DY use in wide-dynamic-range industrial sensors and high-voltage test fixtures where supply headroom exceeds standard ±15 V rails.
How does the DG441DY minimize errors in sample-and-hold circuits?
The DG441DY minimizes sample-and-hold errors primarily through ultra-low charge injection (–1 pC typ.) and low on-resistance match (4 Ω max. mismatch between channels). When the switch opens, injected charge displaces the hold capacitor voltage by <1 mV with a 1 nF capacitor-directly preserving acquisition accuracy. Its NC topology also guarantees default hold-path continuity, preventing signal dropout during controller initialization-key for reliable DG441DY deployment in precision ADC front-ends.
Is the DG441DY pin-compatible with the DG201A it replaces?
Yes, the DG441DY is a direct socket replacement for the DG201A in 16-pin SOIC layouts: identical pin count, function mapping (IN1–IN4, S1–S4, D1–D4, V+, GND, V−, NC), and mechanical footprint. It improves upon DG201A with 50 Ω vs. 90 Ω on-resistance, 150 ns vs. 350 ns tON, and –1 pC vs. –5 pC charge injection-enabling faster, more accurate signal routing without PCB redesign. DG441DY thus delivers drop-in performance uplift in legacy systems.
DG441DY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 85Ohm
- Channel-to-Channel Matching (ΔRon):
- 4Ohm (Max)
- Voltage - Supply, Single (V+):
- 12V
- Voltage - Supply, Dual (V±):
- ±15V
- Switch Time (Ton, Toff) (Max):
- 220ns, 120ns
- -3db Bandwidth:
- -
- Charge Injection:
- -1pC
- Channel Capacitance (CS(off), CD(off)):
- 4pF, 4pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -100dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
DG441DY FAQ
1.How can I place an order for DG441DY through Aetrix?
Please submit a Request for Quotation (RFQ) for DG441DY 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 DG441DY reliable?
The price and inventory of DG441DY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG441DY is usually 5 days.
3.What payment methods are accepted for DG441DY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG441DY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG441DY?
DG441DY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG441DY 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 DG441DY?
For technical support, including DG441DY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG441DY requirements.
6.How does Aetrix verify that DG441DY is sourced from the original manufacturer or authorized distributors?
All DG441DY 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 DG441DY meets industry standards.
7.What is the process for return or replacement of DG441DY?
All DG441DY units undergo pre-shipment inspection (PSI). If there is an issue with DG441DY, 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 DG441DY part is unused and in its original packaging.
Return procedure for DG441DY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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