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Vishay Siliconix DG418BDY-E3
- Part No.:
- DG418BDY-E3
- Manufacturer:
- Vishay Siliconix
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG418BDY-E3.pdf
- Description:
- IC SWITCH SPST-NOX1 25OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,358
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Product details
Overview
DG418BDY-E3 from Vishay Siliconix is a precision monolithic SPST CMOS analog switch optimized for bidirectional signal routing in ±15 V dual-supply systems, featuring 15 Ω on-resistance, 110 ns turn-on time, and TTL/CMOS-compatible control logic - deployed in battery-powered instrumentation and precision test equipment where low leakage (<±0.25 nA) and minimal charge injection (38 pC) are critical.
For engineers reviewing the DG418BDY-E3 datasheet, DG418BDY-E3 pinout, DG418BDY-E3 application, or DG418BDY-E3 equivalent, this page delivers verified specifications, SOIC-8 package details, functional truth table alignment, and validated alternatives for high-accuracy analog switching in military radios, sample-and-hold circuits, and guidance systems.
Technical Context
The DG418BDY-E3 implements complementary control logic relative to DG417B: logic low (≤0.8 V) enables conduction, while logic high (≥2.4 V) disables the switch. It uses Vishay's high-voltage silicon gate (HVSG) process to achieve ±20 V absolute maximum supply ratings and guaranteed latchup immunity via epitaxial isolation.
Each channel operates symmetrically - conducting equally well in both directions when on, blocking up to the full supply rail when off - with break-before-make behavior exclusive to DG419B, not applicable to DG418BDY-E3. Signal clamping diodes protect against overvoltage transients exceeding V+ or V−.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Signal Range | ±15 V - supports full-rail analog signals without clipping in dual-supply precision systems |
| On-Resistance (RDS(on)) | 15 Ω typical at ±15 V supplies - ensures minimal signal attenuation and gain error in sensor front-ends |
| Turn-On Time (tON) | 110 ns max at RL = 300 Ω, CL = 35 pF - enables fast multiplexing in data acquisition systems |
| Off-Leakage Current (IS(off)) | ±0.25 nA max at ±15.5 V - preserves accuracy in high-impedance sample-and-hold and integrator circuits |
| Charge Injection | 38 pC - limits voltage glitch on hold capacitors, critical for sub-12-bit ADC interface stability |
| Off Isolation (OIRR) | –82 dB at 1 MHz - suppresses crosstalk between adjacent channels in multi-channel instrumentation |
| Supply Voltage Range | V+ = +20 V, V− = –20 V - accommodates industrial ±15 V rails with 5 V margin for transient robustness |
Pinout & Package
DG418BDY-E3 is housed in an 8-pin narrow SOIC package (JEDEC MS-012), measuring 4.90 mm × 3.90 mm × 1.75 mm, RoHS-compliant with matte tin lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Digital control input | Active-low enable: logic ≤0.8 V turns switch ON; ≥2.4 V turns OFF per truth table |
| 2 (S) | Analog source terminal | Bidirectional current path - connects to signal source or load depending on system topology |
| 3 (D) | Analog drain terminal | Paired with S; forms single-pole, single-throw (SPST) path - interchangeable with S under bias |
| 4 (V−) | Negative supply rail | Reference for analog signal swing down to –15 V; must be decoupled near device |
| 5 (GND) | Digital ground reference | Return path for logic supply (VL); isolated from analog ground in mixed-signal layouts |
| 6 (V+) | Positive supply rail | Reference for analog signal swing up to +15 V; requires local 0.1 µF ceramic bypass |
| 7 (VL) | Logic supply voltage | Accepts 5 V TTL/CMOS levels; independent of V+/V−, enabling level-shifted control |
| 8 (NC) | No connect | Internally unconnected - must remain floating; no PCB trace or thermal pad required |
Key Features
| Feature | Design Value |
|---|---|
| ±15 V analog signal range | Enables direct interfacing with industrial sensors and op-amp outputs without level-shifting circuitry |
| 15 Ω on-resistance | Reduces gain error to <0.01% in 1 kΩ load paths, preserving linearity in precision DAC output stages |
| 38 pC charge injection | Restricts hold-step error to <1 LSB in 12-bit, 10 nF sample capacitors - validated per Figure 5 test circuit |
| TTL/CMOS-compatible logic | Eliminates need for external level translators when driven by microcontrollers or FPGAs operating at 5 V |
| MSOP-8 and SOIC-8 packaging | SOIC-8 footprint (DG418BDY-E3) offers drop-in replacement for legacy designs; MSOP variant saves 60% board area |
Applications
| Precision Test Equipment | Precision Instrumentation |
|---|---|
Use Scenario: Automated test systems routing calibrated reference voltages to DUT inputs across multiple channels. IC Role / Device Role / Timing Role: SPST analog switch selecting between reference sources with minimal offset and THD degradation. Use Value: 15 Ω RDS(on) and ±0.25 nA leakage ensure <0.005% measurement uncertainty in 16-bit multimeters. |
Use Scenario: Portable gas analyzers conditioning low-level electrochemical sensor outputs before ADC sampling. IC Role / Device Role / Timing Role: Bidirectional signal gate isolating sensor front-end during calibration cycles. Use Value: Symmetrical conduction and ±15 V range preserve signal integrity across full sensor dynamic range. |
| Battery-Powered Systems | Sample-and-Hold Circuits |
Use Scenario: Handheld oscilloscopes managing analog front-end gain stages and input coupling paths. IC Role / Device Role / Timing Role: Low-power analog switch enabling power-gated signal paths to extend runtime. Use Value: 1 µA max supply current (I+, I−, IL, IGND) minimizes quiescent draw in always-on monitoring modes. |
Use Scenario: High-speed data loggers capturing transient waveforms using switched-capacitor hold networks. IC Role / Device Role / Timing Role: Precision switch controlling capacitor charging phase with deterministic timing. Use Value: 38 pC charge injection limits aperture error to <0.5 mV in 10 nF hold capacitors at 100 kHz sampling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4617EUA+ | Higher on-resistance (35 Ω typ), wider supply range (±20 V), but higher charge injection (60 pC) | Less suitable for sub-12-bit sample-and-hold; better for general-purpose routing with higher voltage margin | Select MAX4617EUA+ only if >±15 V operation is required and charge injection tolerance exceeds 50 pC |
| ADG1419BRMZ | Lower on-resistance (1.3 Ω), lower leakage (±20 pA), but requires 3 V logic supply and lacks VL pin independence | Superior for low-distortion audio or RF switching; incompatible with 5 V logic control without level shift | Choose ADG1419BRMZ when ultra-low RDS(on) and leakage dominate, and logic supply is constrained to 3 V |
Compared with DG418BDY-E3, MAX4617EUA+ trades precision (higher RDS(on), higher Q) for extended voltage headroom, while ADG1419BRMZ delivers superior analog performance at the cost of 5 V logic compatibility - making DG418BDY-E3 optimal for 5 V-controlled, ±15 V precision instrumentation where balanced specs and proven reliability are essential.
Availability
DG418BDY-E3 is available at Aetrix Electronics and suitable for precision test equipment, battery-powered instrumentation, and sample-and-hold circuits requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for DG418BDY-E3 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 components and analog ICs, with leadership in high-reliability MOSFETs, diodes, optoelectronics, and precision analog switches.
The DG418BDY-E3 belongs to Vishay's DG41xB series of monolithic CMOS analog switches, engineered specifically for high-accuracy signal routing in military, aerospace, and industrial test systems demanding low distortion, rail-to-rail operation, and latchup immunity.
FAQ
What is the logic polarity of DG418BDY-E3?
The DG418BDY-E3 features active-low control logic: applying a logic low (≤0.8 V) to the IN pin enables the switch (S-D path closed), while a logic high (≥2.4 V) disables it. This is the inverse of DG417B, as confirmed in the Truth Table on page 1 of Vishay Document 72107. The DG418BDY-E3 does not require external inverters when interfaced with standard 5 V microcontroller GPIOs configured as active-low outputs.
Does DG418BDY-E3 support single-supply operation?
Yes, DG418BDY-E3 supports single-supply operation with V+ = 12 V and V− = 0 V, delivering an analog signal range of 0 V to 12 V and RDS(on) of 26 Ω typical (per page 4 specifications). However, its full ±15 V capability and lowest leakage performance are realized only in dual-supply configurations - single-supply use is validated but trades off dynamic range and leakage versus the dual-rail case.
What is the maximum allowable analog signal voltage beyond V+ or V− for DG418BDY-E3?
Per Note (a) on page 2 of the DG417B/DG418B/DG419B datasheet, signals on S or D pins exceeding V+ or V− are clamped by internal diodes. Forward diode current must be limited to the absolute maximum rating of 30 mA continuous or 100 mA pulsed (1 ms, 10% duty cycle). Therefore, transient excursions beyond rails are permissible only with external current limiting - e.g., series resistors - to prevent latchup or permanent damage.
Is the NC pin (Pin 8) of DG418BDY-E3 safe to tie to ground or leave floating?
Pin 8 is a true no-connect (NC) terminal - internally unconnected and electrically isolated. Vishay documentation explicitly states it must remain floating; connecting it to ground, V+, V−, or any other node may cause unpredictable behavior or increased leakage. PCB layout must omit any trace, thermal pad, or solder mask opening at Pin 8 to maintain specification compliance.
How does DG418BDY-E3 handle charge injection in sample-and-hold applications?
DG418BDY-E3 specifies 38 pC typical charge injection (measured at drain pin, CL = 10 nF, Vgen = 0 V), directly impacting hold capacitor voltage step error. For a 10 nF hold capacitor, this yields a 3.8 mV glitch - acceptable for 12-bit accuracy (LSB = 4.9 mV at 20 V full scale). Layout best practices include minimizing trace inductance and using guard rings around S/D pins to reduce parasitic coupling, as validated in Figure 5 test circuit.
DG418BDY-E3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 25Ohm
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- 13V ~ 36V
- Voltage - Supply, Dual (V±):
- ±7V ~ 22V
- Switch Time (Ton, Toff) (Max):
- 89ns, 80ns
- -3db Bandwidth:
- -
- Charge Injection:
- 38pC
- Channel Capacitance (CS(off), CD(off)):
- 12pF, 12pF
- 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
DG418BDY-E3 FAQ
1.How can I place an order for DG418BDY-E3 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG418BDY-E3 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 DG418BDY-E3 reliable?
The price and inventory of DG418BDY-E3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG418BDY-E3 is usually 5 days.
3.What payment methods are accepted for DG418BDY-E3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG418BDY-E3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG418BDY-E3?
DG418BDY-E3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG418BDY-E3 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 DG418BDY-E3?
For technical support, including DG418BDY-E3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG418BDY-E3 requirements.
6.How does Aetrix verify that DG418BDY-E3 is sourced from the original manufacturer or authorized distributors?
All DG418BDY-E3 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 DG418BDY-E3 meets industry standards.
7.What is the process for return or replacement of DG418BDY-E3?
All DG418BDY-E3 units undergo pre-shipment inspection (PSI). If there is an issue with DG418BDY-E3, 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 DG418BDY-E3 part is unused and in its original packaging.
Return procedure for DG418BDY-E3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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