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Vishay Siliconix DG418BDY-T1-E3
- Part No.:
- DG418BDY-T1-E3
- Manufacturer:
- Vishay Siliconix
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG418BDY-T1-E3.pdf
- Description:
- IC SWITCH SPST-NOX1 25OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,258
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Product details
Overview
DG418BDY-T1-E3 from Vishay Siliconix is a precision monolithic SPST CMOS analog switch optimized for bidirectional signal routing in high-fidelity analog paths. It features 15 Ω on-resistance, ±15 V analog signal range, 110 ns turn-on time, TTL/CMOS-compatible control logic, and operates across –40 °C to +85 °C - enabling use in battery-powered instrumentation and military-grade signal conditioning circuits.
For engineers reviewing the DG418BDY-T1-E3 datasheet, DG418BDY-T1-E3 pinout, DG418BDY-T1-E3 application, or DG418BDY-T1-E3 equivalent, key selection criteria include guaranteed break-before-make timing (for DG419B only), low charge injection (38 pC), high off-isolation (–82 dB at 1 MHz), and SOIC-8 package compatibility with standard PCB layouts for test equipment and guidance systems.
Technical Context
The DG418BDY-T1-E3 implements a single-pole single-throw (SPST) switch topology with complementary control logic versus DG417B: logic "1" disables conduction, logic "0" enables it. Its HVSG process ensures latchup immunity and supports rail-to-rail analog signal switching up to ±15 V while maintaining low leakage (±0.25 nA off-state, ±0.4 nA on-state).
Dynamic performance is defined by 110 ns tON, 88 ns tOFF, and 38 pC charge injection under CL = 10 nF conditions. Off-capacitance is 12 pF (source/drain), and on-capacitance is 50 pF - critical for minimizing crosstalk and settling error in sample-and-hold and multiplexed data acquisition systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Signal Range | ±15 V - supports full-range bipolar signal switching without clipping in precision instrumentation front-ends. |
| RDS(on) | 15 Ω typical - minimizes voltage drop and gain error in low-impedance sensor interfaces and DAC output buffering. |
| tON/tOFF | 110 ns / 88 ns - enables sub-microsecond channel switching for high-speed data acquisition and real-time control loops. |
| Charge Injection | 38 pC - limits voltage glitch amplitude in sample-and-hold circuits with 10 nF hold capacitors (≤3.8 mV step). |
| Off Isolation (OIRR) | –82 dB at 1 MHz - suppresses crosstalk between adjacent channels in multi-channel analog multiplexers. |
| Supply Current | 1 µA max (I+, I−, IL, IGND) - ensures negligible quiescent power draw in portable and always-on monitoring systems. |
| Logic Compatibility | TTL and CMOS - simplifies interface to microcontrollers, FPGAs, and legacy digital controllers without level-shifting. |
Pinout & Package
Package: 8-pin narrow SOIC (JEDEC MS-012), body dimensions 4.90 mm × 3.90 mm × 1.75 mm, RoHS-compliant matte tin lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Digital control input | Active-low enable: logic "0" ≤ 0.8 V turns switch ON; logic "1" ≥ 2.4 V turns OFF (complementary to DG417B). |
| 2 - S | Analog source terminal | Bidirectional conduction path - connects to signal source (e.g., sensor output or DAC) when switch is enabled. |
| 3 - D | Analog drain terminal | Bidirectional conduction path - routes switched signal to load (e.g., ADC input or amplifier stage). |
| 4 - V− | Negative supply rail | Supports dual-supply operation down to –20 V; clamps analog inputs exceeding V− by internal diodes. |
| 5 - GND | Ground reference | Logic ground and substrate reference; must be tied to system ground plane for stable switching thresholds. |
| 6 - V+ | Positive supply rail | Supports dual-supply operation up to +20 V; defines upper analog signal limit and powers internal level shifters. |
| 7 - VL | Logic supply voltage | Accepts 5 V TTL/CMOS logic levels independent of analog rails; enables mixed-voltage system interfacing. |
| 8 - NC | No connect | Internally unconnected; must remain floating - no external tie or pull-up/pull-down required. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog switching | ±15 V signal range with <15 Ω RDS(on) - preserves dynamic range and linearity in high-precision measurement chains. |
| Ultra-low leakage | ±0.25 nA off-state, ±0.4 nA on-state - prevents DC error accumulation in long-integration applications like electrometer front-ends. |
| Low charge injection | 38 pC - reduces hold-step error in sample-and-hold circuits, supporting 16-bit+ resolution without trimming. |
| High off-isolation | –82 dB at 1 MHz - isolates active and inactive channels in multi-sensor multiplexing, minimizing inter-channel interference. |
| LV logic compatibility | VL = 5 V input with 0.8 V/2.4 V thresholds - eliminates need for external level translators when interfacing to 3.3 V or 5 V microcontrollers. |
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 selecting between reference voltages, calibration standards, and DUT inputs. Use Value: 15 Ω RDS(on) and ±15 V range ensure minimal gain/offset drift during automated self-test sequences. |
Use Scenario: Multiplexing thermocouple, RTD, and strain gauge signals into a shared 24-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Low-leakage, low-charge-injection analog switch enabling accurate cold-junction compensation and ratiometric measurements. Use Value: 0.25 nA off-leakage prevents >1 µV offset error in high-impedance sensor paths over temperature. |
| Battery-Powered Systems | Military Radios |
Use Scenario: Power-gating analog signal paths in handheld spectrum analyzers and portable ECG monitors. IC Role / Device Role / Timing Role: Low-quiescent-current (1 µA) analog switch enabling selective channel activation to extend battery life. Use Value: Sub-µA supply current allows continuous monitoring of standby channels without draining Li-ion cells. |
Use Scenario: RF front-end signal routing in secure HF/VHF transceivers requiring EMI-hardened analog switching. IC Role / Device Role / Timing Role: High-isolation (–82 dB) SPST switch isolating receive and transmit paths during TDD operation. Use Value: 12 pF off-capacitance and high OIRR minimize LO feedthrough and spurious emissions in sensitive receiver stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4617EUA+ | Higher RDS(on) (35 Ω typ), wider temp range (–40 °C to +125 °C), same SOIC-8 package. | Preferred for automotive under-hood environments where extended temperature operation is mandatory. | Select MAX4617EUA+ when operating above +85 °C is required; not suitable for low-RDS(on) precision signal paths. |
| ADG1419BRMZ | Lower RDS(on) (1.3 Ω typ), higher supply voltage rating (±20 V), but larger 10-lead MSOP package. | Used in high-accuracy medical imaging front-ends where ultra-low on-resistance dominates layout constraints. | Choose ADG1419BRMZ only if <2 Ω RDS(on) is critical and MSOP-10 footprint is acceptable; adds board area cost. |
Compared with DG418BDY-T1-E3, MAX4617EUA+ trades lower leakage and tighter RDS(on) tolerance for extended temperature capability, while ADG1419BRMZ delivers order-of-magnitude lower on-resistance at the expense of package size and cost - making DG418BDY-T1-E3 optimal for space-constrained, battery-powered precision instruments within commercial temperature range.
Availability
DG418BDY-T1-E3 is available at Aetrix Electronics and suitable for precision test equipment, battery-powered instrumentation, and military radio subsystems requiring stable component supply, RoHS compliance, and long-term production continuity.
Supply support for DG418BDY-T1-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 core expertise in high-voltage silicon gate processes and precision analog switching technologies.
The DG417B/DG418B/DG419B family was designed for high-performance analog signal routing in portable, military, and industrial systems - emphasizing low power, low distortion, and robust latchup immunity via epitaxial isolation.
FAQ
What is the logic polarity of DG418BDY-T1-E3?
The DG418BDY-T1-E3 uses active-low control logic: applying logic "0" (≤0.8 V) to the IN pin enables conduction between S and D terminals, while logic "1" (≥2.4 V) disables the switch. This is complementary to DG417B, which responds to opposite logic levels - a key distinction confirmed in the Truth Table on page 1 of Vishay document 72107.
Does DG418BDY-T1-E3 support single-supply operation?
Yes, DG418BDY-T1-E3 supports single-supply operation with V− tied to ground (0 V) and V+ ranging from 5 V to 12 V. The analog signal range becomes 0 V to V+, and specifications such as RDS(on) = 26 Ω (typ) and tON = 100 ns are guaranteed under V+ = 12 V, V− = 0 V conditions per the datasheet's second specification table on page 4.
What is the maximum allowable analog input voltage beyond the supply rails?
Signals on S or D pins exceeding V+ or V− are clamped by internal diodes, as noted in datasheet footnote "a". Forward diode current must be limited to the absolute maximum rating of 30 mA continuous or 100 mA pulsed (1 ms, 10% duty cycle); exceeding these risks permanent damage. No external clamping is required for normal operation within ±15 V analog range.
Is DG418BDY-T1-E3 pin-compatible with DG417BDY-T1-E3?
Yes, DG418BDY-T1-E3 is pin-compatible with DG417BDY-T1-E3 in the SOIC-8 package: both share identical pinout (IN, S, D, V−, GND, V+, VL, NC). However, their control logic is inverted - DG417B turns ON with logic "1", while DG418B turns ON with logic "0" - requiring firmware or schematic revision when substituting.
What thermal derating applies to DG418BDY-T1-E3 in SOIC-8 package?
For the SOIC-8 package, DG418BDY-T1-E3 requires power dissipation derating above +70 °C at 4 mW/°C, as specified in note "d" of the Absolute Maximum Ratings table on page 2. At 100 °C ambient, maximum allowed power drops to 400 mW − (30 °C × 4 mW/°C) = 280 mW - critical for sustained operation in enclosed military or industrial enclosures.
DG418BDY-T1-E3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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-T1-E3 FAQ
1.How can I place an order for DG418BDY-T1-E3 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG418BDY-T1-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-T1-E3 reliable?
The price and inventory of DG418BDY-T1-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-T1-E3 is usually 5 days.
3.What payment methods are accepted for DG418BDY-T1-E3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG418BDY-T1-E3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG418BDY-T1-E3?
DG418BDY-T1-E3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG418BDY-T1-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-T1-E3?
For technical support, including DG418BDY-T1-E3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG418BDY-T1-E3 requirements.
6.How does Aetrix verify that DG418BDY-T1-E3 is sourced from the original manufacturer or authorized distributors?
All DG418BDY-T1-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-T1-E3 meets industry standards.
7.What is the process for return or replacement of DG418BDY-T1-E3?
All DG418BDY-T1-E3 units undergo pre-shipment inspection (PSI). If there is an issue with DG418BDY-T1-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-T1-E3 part is unused and in its original packaging.
Return procedure for DG418BDY-T1-E3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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