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Vishay Siliconix DG418DY-T1
- Part No.:
- DG418DY-T1
- Manufacturer:
- Vishay Siliconix
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG418DY-T1.pdf
- Description:
- IC SWITCH SPST-NOX1 35OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,106
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Product details
Overview
DG418DY-T1 from Vishay Siliconix is a precision single-pole, single-throw (SPST), normally-open (NO) CMOS analog switch optimized for high-fidelity signal routing in low-power instrumentation. It delivers 20 Ω on-resistance, 100 ns turn-on time, ±15 V analog signal range, and ultra-low 35 nW power dissipation-enabling accurate switching in battery-powered test equipment and portable medical devices.
For engineers reviewing the DG418DY-T1 datasheet, DG418DY-T1 pinout, DG418DY-T1 application, or DG418DY-T1 equivalent, this device supports dual-supply (±15 V) and single-supply (up to 40 V) operation, features TTL/CMOS-compatible control logic, and is validated for precision sample-and-hold circuits, military radio front-ends, and guidance system signal conditioning where leakage (<0.25 nA off-state), charge injection (60 pC), and low capacitance (8 pF off, 30 pF on) are critical.
Technical Context
The DG418DY-T1 implements a break-before-make–free SPST topology with complementary control logic versus DG417 (active-high vs. active-low enable). Its HVSG (High-Voltage Silicon Gate) process enables 44 V absolute maximum supply rating and latch-up immunity via epitaxial isolation.
It operates across –40 °C to +85 °C with guaranteed RDS(on) ≤ 45 Ω over full temperature range, <0.25 nA max off-leakage at ±15.5 V, and 175 ns max switching time-making it suitable for precision DC-coupled analog paths requiring minimal signal distortion and rail-to-rail voltage handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Signal Range | ±15 V - Supports rail-to-rail AC/DC analog signals without clipping in bipolar systems. |
| RDS(on) | 20 Ω typical (45 Ω max) - Ensures minimal gain error and THD degradation in precision amplifier and filter paths. |
| Turn-on Time (ton) | 100 ns typical (175 ns max) - Enables fast multiplexing in data acquisition systems sampling up to ~5 MHz. |
| Off-Leakage Current | ≤ 0.25 nA at ±15.5 V - Critical for maintaining accuracy in high-impedance sensor interfaces and long-duration sample-and-hold hold phases. |
| Charge Injection | 60 pC - Limits voltage glitch on hold capacitors; compatible with 12-bit+ resolution in switched-capacitor applications. |
| Supply Voltage Range | ±5 V to ±20 V dual or 5 V to 40 V single - Allows flexible integration into legacy industrial and modern low-voltage embedded systems. |
| Power Dissipation | 35 nW typical - Enables always-on operation in energy-constrained portable instrumentation without thermal drift. |
Pinout & Package
Package: 8-pin narrow SOIC (JEDEC MS-012), body dimensions 4.9 mm × 3.9 mm × 1.5 mm, lead pitch 1.27 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (S) | Source Terminal | Analog input/output node; bidirectional conduction path when switch is enabled. |
| 2 (D) | Drain Terminal | Analog output/input node; electrically symmetric with S; forms low-RDS(on) channel with S. |
| 3 (NC) | No Connect | Internally unconnected; must be left floating or tied to GND per layout best practice. |
| 4 (V−) | Negative Supply Rail | Bias reference for negative analog swing; must be decoupled locally to minimize noise coupling. |
| 5 (GND) | Ground Reference | Digital and substrate reference; separate from analog ground in mixed-signal designs to avoid return-path crosstalk. |
| 6 (IN) | Digital Control Input | Active-high logic interface (≥2.4 V = ON); complements DG417's active-low behavior. |
| 7 (V+) | Positive Supply Rail | Bias reference for positive analog swing; supports up to 44 V absolute max rating. |
| 8 (VL) | Logic Supply Voltage | Independent 5 V logic rail; allows level-shifting between digital controller (3.3 V/5 V) and analog supplies (±15 V). |
Key Features
| Feature | Design Value |
|---|---|
| High-Voltage Silicon Gate (HVSG) Process | Enables 44 V absolute max supply rating and robust ESD tolerance without external protection. |
| Epitaxial Latch-Up Immunity | Guarantees safe operation under transient overvoltage or rapid supply sequencing common in military avionics. |
| TTL/CMOS-Compatible Logic Inputs | Accepts standard 0.8 V / 2.4 V thresholds-eliminates need for level shifters when interfacing with microcontrollers or FPGAs. |
| Low Off-Capacitance (8 pF) | Minimizes crosstalk and feedthrough in high-frequency multiplexed signal chains (e.g., RF test head switching). |
| Miniature SOIC-8 Packaging | Reduces PCB area by >50% vs. DIP-8; supports automated assembly and high-density routing in handheld diagnostics. |
Applications
| Precision Test Equipment | Precision Instrumentation |
|---|---|
Use Scenario: Automated calibration of multimeters and oscilloscope front-ends using relayless signal routing. IC Role / Device Role / Timing Role: SPST analog switch enabling low-distortion, low-leakage selection of reference voltage sources and attenuator networks. Use Value: 20 Ω RDS(on) and <0.25 nA leakage preserve traceable measurement uncertainty below 0.01% in metrology-grade systems. |
Use Scenario: Multiplexing thermocouple, RTD, and strain gauge inputs in portable data loggers. IC Role / Device Role / Timing Role: Low-power analog switch isolating high-impedance sensors during idle cycles to prevent bias current errors. Use Value: 35 nW quiescent power extends battery life to >1 year in field-deployed environmental monitors. |
| Battery-Powered Systems | Military Radios |
Use Scenario: Power-path management in handheld radios and UAV telemetry modules with dual Li-ion cells. IC Role / Device Role / Timing Role: Signal routing switch controlling audio codec I/O and RF front-end bias sequencing. Use Value: ±15 V analog range and 44 V abs-max rating tolerate wide battery voltage swings (6–18 V) without external regulators. |
Use Scenario: Antenna diversity switching and IF signal path selection in tactical HF/VHF transceivers. IC Role / Device Role / Timing Role: High-isolation (–60 dB) analog switch preventing LO leakage and intermodulation in sensitive receive chains. Use Value: 8 pF off-capacitance and 30 pF on-capacitance maintain impedance stability across 10 kHz–10 MHz bands. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4617EUA+ | Higher RDS(on) (35 Ω typ), higher charge injection (120 pC), same SO-8 package. | Less suitable for sub-12-bit sample-and-hold; acceptable for general-purpose multiplexing. | Select MAX4617EUA+ only if cost sensitivity outweighs precision requirements and board space permits larger decoupling. |
| ADG1419BRMZ | Lower RDS(on) (1.3 Ω typ), higher supply current (120 μA), requires 3.3 V logic supply. | Overqualified for low-power portable use; better suited for high-speed DAC buffering than battery-constrained systems. | Choose ADG1419BRMZ only when <2 Ω on-resistance is mandatory and continuous power budget exceeds 100 μA. |
Compared with MAX4617EUA+ and ADG1419BRMZ, the DG418DY-T1 uniquely balances ultra-low power (35 nW), precision leakage (<0.25 nA), and rugged ±15 V operation in a miniature SOIC-8-making it optimal for portable, battery-operated instrumentation where efficiency, accuracy, and size are co-constrained.
Availability
DG418DY-T1 is available at Aetrix Electronics and suitable for precision test equipment, portable instrumentation, and military radio systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for DG418DY-T1 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 leader in discrete semiconductors and passive components, specializing in high-reliability analog solutions for industrial, automotive, and defense markets.
The DG418DY-T1 belongs to Vishay's precision CMOS analog switch family, engineered for low-leakage, low-distortion signal routing in mission-critical instrumentation and portable electronics where rail-to-rail performance and micropower operation are essential.
FAQ
What is the maximum supply voltage rating for the DG418DY-T1?
The DG418DY-T1 has an absolute maximum supply voltage rating of 44 V across V+ and V− terminals. This allows operation with dual supplies up to ±20 V or single supplies up to 40 V. Exceeding 44 V risks permanent damage, and derating guidelines apply above 25 °C ambient per datasheet Note c.
Does the DG418DY-T1 support single-supply operation?
Yes, the DG418DY-T1 supports true single-supply operation from 5 V to 40 V. In this mode, V− is connected to GND, V+ receives the positive rail, and VL is supplied with 5 V. The analog signal range becomes 0 V to V+, enabling compatibility with microcontroller-based data loggers and portable sensors.
How does the DG418DY-T1 differ from the DG417DY-T1 in control logic?
The DG418DY-T1 uses active-high logic: IN ≥ 2.4 V turns the switch ON. In contrast, the DG417DY-T1 uses active-low logic: IN ≤ 0.8 V turns its switch ON. This complementary behavior allows direct pairing in differential or redundant switching architectures without additional inverters.
What is the guaranteed maximum on-resistance for DG418DY-T1 over temperature?
The DG418DY-T1 guarantees RDS(on) ≤ 45 Ω over its full operating temperature range of –40 °C to +85 °C (D suffix). At room temperature, typical RDS(on) is 20 Ω, but design margins must accommodate the 45 Ω worst-case value for precision gain calculations and THD budgets.
Can the DG418DY-T1 be used in sample-and-hold circuits?
Yes, the DG418DY-T1 is explicitly validated for sample-and-hold applications. Its 60 pC charge injection, 8 pF off-capacitance, and <0.25 nA off-leakage minimize hold-step error and droop rate-supporting 12-bit accuracy in systems with hold capacitors ≥10 nF and acquisition times ≥1 μs.
DG418DY-T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 35Ohm
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- 12V
- Voltage - Supply, Dual (V±):
- ±15V
- Switch Time (Ton, Toff) (Max):
- 175ns, 145ns
- -3db Bandwidth:
- -
- Charge Injection:
- 60pC
- Channel Capacitance (CS(off), CD(off)):
- 8pF, 8pF
- Current - Leakage (IS(off)) (Max):
- 250pA
- Crosstalk:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
DG418DY-T1 FAQ
1.How can I place an order for DG418DY-T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG418DY-T1 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 DG418DY-T1 reliable?
The price and inventory of DG418DY-T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG418DY-T1 is usually 5 days.
3.What payment methods are accepted for DG418DY-T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG418DY-T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG418DY-T1?
DG418DY-T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG418DY-T1 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 DG418DY-T1?
For technical support, including DG418DY-T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG418DY-T1 requirements.
6.How does Aetrix verify that DG418DY-T1 is sourced from the original manufacturer or authorized distributors?
All DG418DY-T1 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 DG418DY-T1 meets industry standards.
7.What is the process for return or replacement of DG418DY-T1?
All DG418DY-T1 units undergo pre-shipment inspection (PSI). If there is an issue with DG418DY-T1, 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 DG418DY-T1 part is unused and in its original packaging.
Return procedure for DG418DY-T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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