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Vishay Siliconix DG418DJ
- Part No.:
- DG418DJ
- Manufacturer:
- Vishay Siliconix
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
DG418DJ.pdf
- Description:
- IC SWITCH SPST-NO X 1 35OHM 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,390
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Product details
Overview
DG418DJ from Vishay Siliconix is a precision monolithic CMOS single-pole, single-throw (SPST), normally-open analog switch optimized for bidirectional signal routing in low-power, high-accuracy systems. It delivers 20 Ω on-resistance, 100 ns turn-on time, ±15 V analog signal range, and ultra-low 35 nW power dissipation - enabling use in battery-powered instrumentation and portable test equipment.
For engineers reviewing the DG418DJ datasheet, DG418DJ pinout, DG418DJ application, or DG418DJ equivalent, key selection criteria include guaranteed break-before-make timing (shared with DG419), TTL/CMOS logic compatibility, dual-supply operation up to ±15 V, and MiniDIP-8 packaging for through-hole prototyping and industrial control interfaces.
Technical Context
The DG418DJ implements a high-voltage silicon gate (HVSG) process to achieve 44 V absolute maximum supply rating and latchup immunity via epitaxial isolation. Its complementary control logic (active-high enable) directly opposes DG417, allowing matched pair switching in differential or redundant signal paths.
Each channel conducts identically in both directions when on and blocks signals up to the full supply rail when off. The device supports unipolar (0–12 V) and bipolar (±15 V) operation, with leakage currents specified down to ±0.25 nA over –40 °C to +85 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog signal range | ±15 V - supports full-rail bipolar signal switching without clipping in precision measurement front-ends |
| On-resistance (RDS(on)) | 20 Ω typical - ensures minimal gain error and THD degradation in audio and sensor signal paths |
| Turn-on time (ton) | 100 ns - enables sub-microsecond multiplexing in data acquisition and sample-and-hold circuits |
| Supply voltage max. | 44 V - accommodates wide input transients and industrial bus voltages with margin |
| Power dissipation | 35 nW - allows continuous operation in energy-constrained battery systems without thermal derating |
| Switch leakage (IS(off)) | ±0.25 nA max at full temperature range - preserves DC accuracy in high-impedance sensor interfaces |
| Logic compatibility | TTL and CMOS - simplifies interface to microcontrollers and FPGA I/O without level-shifting circuitry |
Pinout & Package
Package: 8-pin plastic MiniDIP (DIP-8), JEDEC MS-001, body width 7.62 mm, lead pitch 2.54 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (S) | Source terminal | Bidirectional analog signal path input/output; connects to load or source depending on system topology |
| 2 (D) | Drain terminal | Bidirectional analog signal path input/output; interchangeable with S for symmetric signal routing |
| 3 (NC) | No-connect | Internally unconnected; must remain floating - no PCB trace or component attachment |
| 4 (V−) | Negative supply rail | Reference for bipolar operation; required for ±15 V mode; tied to GND in unipolar configurations |
| 5 (GND) | Ground reference | Logic and substrate reference; separate from V− in dual-supply use; critical for noise rejection |
| 6 (IN) | Control input | Active-high digital enable; 0.8 V low / 2.4 V high threshold; drives internal CMOS transmission gate |
| 7 (V+) | Positive supply rail | Primary power for analog channel; supports up to +44 V; sets upper analog signal limit |
| 8 (VL) | Logic supply | Independent 5 V rail for control logic; decoupled from V+/V− to prevent digital noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| Break-before-make guarantee | Ensures no signal shorting during state transitions - critical for SPDT-like sequencing using paired DG417/DG418 |
| Ultra-low charge injection (60 pC) | Minimizes voltage glitch on sampled nodes - essential for precision sample-and-hold and ADC front-end stability |
| Epitaxial latchup protection | Enables robust operation in high-noise military and industrial environments without destructive failure modes |
| Low off-capacitance (8 pF) | Reduces crosstalk and high-frequency signal coupling between adjacent channels in dense PCB layouts |
| High off-isolation (–60 dB) | Maintains signal integrity in multi-channel multiplexers operating up to 1 MHz |
Applications
| Precision Test Equipment | Precision Instrumentation |
|---|---|
Use Scenario: Automated calibration of multimeters and oscilloscope front-ends requiring nanovolt-level DC accuracy and low thermal EMF. IC Role / Device Role / Timing Role: SPST analog switch routing reference voltages and calibration standards into measurement paths with minimal offset drift. Use Value: 0.25 nA max off-leakage and 20 Ω RDS(on) preserve absolute accuracy across temperature without recalibration. | Use Scenario: Signal conditioning in medical ECG amplifiers where electrode inputs require guarded switching and ultra-low current injection. IC Role / Device Role / Timing Role: Low-charge-injection analog switch isolating patient-connected leads during gain reconfiguration. Use Value: 60 pC charge injection prevents baseline shift in high-gain, low-frequency biopotential monitoring. |
| Battery-Powered Systems | Sample-and-Hold Circuits |
Use Scenario: Power management in handheld spectrum analyzers and portable DMMs needing extended runtime and stable analog performance. IC Role / Device Role / Timing Role: Low-quiescent-current analog switch enabling automatic range selection and input protection without draining Li-ion cells. Use Value: 35 nW standby power and –40 °C to +85 °C operation ensure >10-year shelf life and field reliability. | Use Scenario: High-fidelity sampling in 16-bit data loggers capturing vibration or acoustic waveforms at 100 kSPS. IC Role / Device Role / Timing Role: Precision hold capacitor charging switch with minimal droop and aperture uncertainty. Use Value: 100 ns ton/60 ns toff and 8 pF CS(off) support <1 LSB error in 16-bit systems at Nyquist rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4617CPA+ | Higher 35 Ω RDS(on), 125 ns ton, requires same ±15 V supplies but lacks VL pin independence | Less suitable for low-distortion audio routing due to higher on-resistance and charge injection (100 pC) | Select when cost sensitivity outweighs precision requirements and board space permits SO-8 footprint |
| ADG1419BRUZ | SPDT configuration, 1.5 Ω RDS(on), 200 mA continuous current, but 125 °C max temp and SOIC-16 package | Not drop-in replaceable; requires PCB redesign but enables higher-current, lower-distortion switching in lab-grade gear | Choose for next-generation designs demanding sub-ohm on-resistance and enhanced thermal performance |
Compared with MAX4617CPA+ and ADG1419BRUZ, DG418DJ provides optimal balance of low leakage, low charge injection, and MiniDIP-8 through-hole compatibility - making it preferred for legacy industrial test fixtures and repairable instrumentation where layout change is constrained.
Availability
DG418DJ is available at Aetrix Electronics and suitable for precision test equipment, battery-powered instrumentation, and sample-and-hold circuits requiring stable component supply across extended production lifecycles.
Supply support for DG418DJ 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, and precision analog switches.
The DG418DJ belongs to the DG417/DG418/DG419 family of HVSG-process CMOS analog switches, designed specifically for high-accuracy, low-power signal routing in portable, military, and industrial instrumentation where board space and power budget are constrained.
FAQ
What is the maximum supply voltage rating for DG418DJ?
The DG418DJ has an absolute maximum supply voltage rating of 44 V referenced to V−, as confirmed in the Absolute Maximum Ratings table. This applies to V+ under both unipolar (0–44 V) and bipolar (e.g., V+ = +22 V, V− = −22 V) configurations. Operation beyond this risks permanent damage, and derating is required above 25 °C per datasheet note 2c.
Does DG418DJ support single-supply operation?
Yes, DG418DJ supports single-supply operation from 5 V to 40 V, as verified in the Product Summary table and unipolar specifications section. In this mode, V− is tied to GND, VL is supplied with 5 V, and analog signals swing from 0 V to V+. The device maintains 40 Ω typical RDS(on) and 110 ns ton under 12 V single-supply conditions.
What is the function of the VL pin on DG418DJ?
The VL pin on DG418DJ supplies independent 5 V logic power to the internal CMOS control circuitry. It is decoupled from V+ and V− to prevent digital switching noise from modulating the analog channel. Per the datasheet, VL must be 5 V ±10 % and is not tolerant of voltages outside that range - applying 3.3 V or 12 V will cause undefined logic behavior or damage.
Is DG418DJ pin-compatible with DG417DJ?
Yes, DG418DJ is pin-compatible with DG417DJ in the same MiniDIP-8 package, sharing identical pinout and electrical interface. However, their control logic is inverted: DG418DJ enables on logic high (IN = 2.4 V), while DG417DJ enables on logic low (IN = 0.8 V). This allows complementary switching in matched-pair configurations without external inverters.
What is the guaranteed break-before-make timing for DG418DJ?
DG418DJ itself is an SPST NO switch and does not implement break-before-make; that feature is guaranteed only for the DG419 SPDT variant. However, DG418DJ can be used with DG417DJ in a complementary pair to emulate break-before-make behavior - the datasheet confirms this design approach in the Applications section and truth tables, with timing validated by the 13 ns tD specification for DG419.
DG418DJ 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:
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
DG418DJ FAQ
1.How can I place an order for DG418DJ through Aetrix?
Please submit a Request for Quotation (RFQ) for DG418DJ 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 DG418DJ reliable?
The price and inventory of DG418DJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG418DJ is usually 5 days.
3.What payment methods are accepted for DG418DJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG418DJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG418DJ?
DG418DJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG418DJ 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 DG418DJ?
For technical support, including DG418DJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG418DJ requirements.
6.How does Aetrix verify that DG418DJ is sourced from the original manufacturer or authorized distributors?
All DG418DJ 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 DG418DJ meets industry standards.
7.What is the process for return or replacement of DG418DJ?
All DG418DJ units undergo pre-shipment inspection (PSI). If there is an issue with DG418DJ, 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 DG418DJ part is unused and in its original packaging.
Return procedure for DG418DJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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