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Vishay Siliconix DG419BDY
- Part No.:
- DG419BDY
- Manufacturer:
- Vishay Siliconix
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG419BDY.pdf
- Description:
- IC SWITCH SPDT X 1 25OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,570
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Product details
Overview
DG419BDY from Vishay Siliconix is a precision monolithic SPDT CMOS analog switch designed for bidirectional signal routing in high-fidelity analog paths. It features ±15 V analog signal range, 15 Ω typical on-resistance (RDS(on)), 110 ns turn-on time (tON), guaranteed break-before-make switching, and operates from –40 °C to +85 °C. It is used in precision instrumentation and sample-and-hold circuits where low charge injection (38 pC) and high off-isolation (–82 dB) are critical.
For engineers reviewing the DG419BDY datasheet, DG419BDY pinout, DG419BDY application, or DG419BDY equivalent, key selection considerations include its SPDT topology with break-before-make timing (tD = 16 ns), dual-supply operation (±15 V), SOIC-8 package compatibility, and verified performance in battery-powered test equipment requiring low leakage (ID(off) ≤ ±0.75 nA) and minimal signal distortion.
Technical Context
The DG419BDY implements a single-pole double-throw (SPDT) analog switch architecture with independent control of two complementary channels (SW1 and SW2), where logic low enables SW1 and logic high enables SW2 - ensuring guaranteed break-before-make transition. Its HVSG (high-voltage silicon gate) process enables ±15 V analog rail operation while maintaining low RDS(on) and sub-nA leakage across temperature.
It uses TTL/CMOS-compatible digital inputs (VIL ≤ 0.8 V, VIH ≥ 2.4 V) referenced to VL = 5 V, and integrates epitaxial layer latchup protection. The device supports bidirectional conduction with symmetrical on-resistance and blocks signals up to the supply rails when off, making it suitable for precision multiplexing in unipolar and bipolar signal chains.
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 |
| RDS(on) | 15 Ω typ. - minimizes voltage drop and gain error in low-impedance sensor interfaces |
| tON/tOFF | 110 ns / 89 ns - enables fast channel switching in multi-channel data acquisition systems |
| Break-Before-Make Delay (tD) | 16 ns - prevents momentary short-circuit between S1 and S2 paths during state transition |
| Charge Injection | 38 pC - limits voltage glitch in sample-and-hold capacitors and maintains ADC accuracy |
| Off Isolation (OIRR) | –82 dB at 1 MHz - suppresses crosstalk between inactive and active signal paths |
| Channel Leakage (ID(off)) | ±0.75 nA max. - preserves signal integrity in high-impedance transducer conditioning stages |
Pinout & Package
Package: SOIC-8 (narrow, JEDEC MS-012), 4.9 mm × 3.9 mm footprint, 1.27 mm pitch, surface-mountable with gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Digital control input | Active-high logic input controlling SW1/SW2 states per truth table; compatible with 5 V TTL/CMOS |
| 2 (S1) | Source 1 terminal | First SPDT pole connection; bidirectional analog path when SW1 is enabled |
| 3 (D) | Common drain terminal | Shared output node for both SPDT switches; connects to load or downstream circuitry |
| 4 (S2) | Source 2 terminal | Second SPDT pole connection; conducts only when IN = logic high |
| 5 (V–) | Negative supply rail | Bias reference for negative analog swing; must be ≥ –20 V per absolute max rating |
| 6 (GND) | Ground reference | Logic ground and substrate reference; separate from analog ground in mixed-signal layouts |
| 7 (V+) | Positive supply rail | Bias reference for positive analog swing; must be ≤ +20 V per absolute max rating |
| 8 (VL) | Logic supply voltage | 5 V reference for digital interface; decoupling required to minimize noise coupling into analog path |
Key Features
| Feature | Design Value |
|---|---|
| Break-before-make switching | Guaranteed 16 ns minimum delay between SW1 turn-off and SW2 turn-on prevents signal shorting |
| Low on-resistance flatness | 15 Ω typical with <±1 Ω variation over ±10 V signal range - ensures consistent gain in programmable-gain amps |
| Bidirectional analog conduction | Identical RDS(on) and leakage in either direction - supports true AC coupling and differential signal routing |
| High off-isolation | –82 dB at 1 MHz - isolates unused channels in multi-input instrumentation amplifiers |
| Low charge injection | 38 pC - reduces hold-mode error in 16-bit+ SAR ADC sample-and-hold stages |
Applications
| Precision Test Equipment | Precision Instrumentation |
|---|---|
Use Scenario: Automated test system routing multiple sensor inputs to a shared high-resolution ADC. IC Role / Device Role / Timing Role: SPDT analog switch selecting between calibrated reference and DUT signals under microcontroller control. Use Value: Break-before-make action prevents reference contamination; ±15 V range accommodates industrial sensor outputs without level-shifting. |
Use Scenario: Front-end multiplexer in portable multimeter supporting DCV, ACV, and resistance modes. IC Role / Device Role / Timing Role: Bidirectional analog switch enabling shared signal path for sourcing and sensing in ohms measurement. Use Value: 15 Ω RDS(on) minimizes burden voltage; sub-nA leakage preserves accuracy in high-Z resistance ranges. |
| Battery-Powered Systems | Sample-and-Hold Circuits |
Use Scenario: Power management in handheld oscilloscope capturing low-frequency analog waveforms. IC Role / Device Role / Timing Role: Low-quiescent-current analog switch enabling rail-to-rail signal pass-through during active sampling. Use Value: 1 µA max supply current extends battery life; SOIC-8 package allows compact PCB layout. |
Use Scenario: Hold capacitor charging path in precision data acquisition system with 18-bit resolution. IC Role / Device Role / Timing Role: Fast-switching SPDT element connecting amplifier output to hold capacitor with minimal transient injection. Use Value: 38 pC charge injection limits hold-step error to <1 LSB; tON = 110 ns supports >1 MSPS sampling rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPDT analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4619ESE+ | Higher RDS(on) (35 Ω typ.), wider operating temp (–40 °C to +125 °C), same SOIC-8 package | Preferred for extended-temperature industrial controllers where leakage tolerance >1 nA is acceptable | Select MAX4619ESE+ if higher temperature rating outweighs need for lowest on-resistance |
| ADG1419BRMZ | Lower RDS(on) (1.3 Ω typ.), higher supply voltage (±15 V), but requires 3 V logic supply (VL) | Suitable for ultra-low-distortion audio routing where on-resistance flatness dominates performance | Select ADG1419BRMZ only if board already supports 3 V logic rail and <2 Ω RDS(on) is mandatory |
Compared with DG419BDY, MAX4619ESE+ trades lower leakage and tighter RDS(on) for extended temperature range, while ADG1419BRMZ delivers dramatically lower on-resistance but demands redesign of logic supply and layout due to different VL requirement and higher cost.
Availability
DG419BDY 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 DG419BDY 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 expertise in high-voltage, high-reliability silicon processes.
The DG419BDY belongs to the DG41xB precision analog switch family, engineered for high-fidelity signal routing in test, measurement, and military-grade systems where low distortion, guaranteed timing, and rail-to-rail operation are essential.
FAQ
What is the maximum allowable supply voltage for DG419BDY?
The DG419BDY has absolute maximum ratings of V+ = +20 V and V– = –20 V. Operation beyond these limits risks permanent damage. For reliable long-term use, the recommended dual-supply range is ±15 V, which delivers specified performance including ±15 V analog signal range and 15 Ω RDS(on). Exceeding ±15 V may increase leakage and reduce lifetime without improving functionality.
Does DG419BDY support unipolar operation (e.g., 0 V to +12 V)?
Yes, DG419BDY supports unipolar operation. Per the datasheet's second specification table, it functions with V+ = +12 V and V– = 0 V, delivering 0 V to +12 V analog signal range and 26 Ω typical RDS(on). In this configuration, the logic supply VL remains at 5 V, and all timing parameters (tON, tOFF) remain valid, enabling use in single-supply data acquisition systems.
How is break-before-make timing guaranteed in DG419BDY?
Break-before-make timing in DG419BDY is guaranteed by internal circuit design-not just typical behavior. The datasheet specifies tD = 16 ns (minimum) under RL = 300 Ω and CL = 35 pF conditions, measured between SW1 turn-off and SW2 turn-on. This hard guarantee prevents simultaneous conduction, eliminating risk of short-circuiting between S1 and S2 paths during logic transitions.
What is the purpose of the VL pin on DG419BDY?
The VL pin on DG419BDY sets the logic threshold reference for the digital control input (IN). It must be tied to a stable 5 V supply-separate from V+ and V–-to ensure correct interpretation of TTL/CMOS levels (VIL ≤ 0.8 V, VIH ≥ 2.4 V). Decoupling VL with a 0.1 µF capacitor near the pin is critical to prevent digital noise from modulating analog performance.
Can DG419BDY be used in audio signal routing applications?
Yes, DG419BDY is suitable for line-level audio routing where low THD and wide dynamic range are needed. Its ±15 V analog range, 15 Ω RDS(on), –82 dB off-isolation, and 38 pC charge injection support clean signal pass-through. However, for headphone-driving or high-fidelity DAC output stages, dedicated audio switches with lower RDS(on) and optimized capacitance profiles may offer better performance.
DG419BDY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- 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:
- -88dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
DG419BDY FAQ
1.How can I place an order for DG419BDY through Aetrix?
Please submit a Request for Quotation (RFQ) for DG419BDY 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 DG419BDY reliable?
The price and inventory of DG419BDY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG419BDY is usually 5 days.
3.What payment methods are accepted for DG419BDY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG419BDY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG419BDY?
DG419BDY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG419BDY 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 DG419BDY?
For technical support, including DG419BDY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG419BDY requirements.
6.How does Aetrix verify that DG419BDY is sourced from the original manufacturer or authorized distributors?
All DG419BDY 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 DG419BDY meets industry standards.
7.What is the process for return or replacement of DG419BDY?
All DG419BDY units undergo pre-shipment inspection (PSI). If there is an issue with DG419BDY, 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 DG419BDY part is unused and in its original packaging.
Return procedure for DG419BDY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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