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Vishay Siliconix DG401BDY
- Part No.:
- DG401BDY
- Manufacturer:
- Vishay Siliconix
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG401BDY.pdf
- Description:
- IC SWITCH SPST-NOX2 45OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,547
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Product details
Overview
DG401BDY from Vishay Siliconix is a dual SPST analog switch IC designed for precision signal routing in ±15 V analog systems. It features 23 Ω typical on-resistance, 100 ns turn-on time, 40 pA channel on-leakage, and operates from ±15 V supplies with 44 V absolute max rating. It serves in audio/video multiplexing and sample-and-hold circuits where low distortion and rail-to-rail signal handling are critical.
For engineers reviewing the DG401BDY datasheet, DG401BDY pinout, DG401BDY application, or DG401BDY equivalent, key selection criteria include guaranteed break-before-make timing (not applicable to DG401BDY), SOIC-16 package compatibility, TTL/CMOS logic interface, single-supply operation capability, and leakage performance at temperature extremes.
Technical Context
The DG401BDY integrates two independent single-pole single-throw (SPST) switches fabricated using Vishay's high-voltage silicon-gate process. Each switch conducts bidirectionally with flat on-resistance across the full ±15 V analog range and blocks up to 30 V peak-to-peak when off.
It accepts standard TTL/CMOS logic inputs (0.8 V low / 2.4 V high thresholds), supports single-supply operation, and exhibits 60 pC typical charge injection - critical for minimizing error in sampling circuits. No break-before-make timing is specified for DG401BDY, distinguishing it from the DG403B variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Signal Range | ±15 V - enables full-rail signal switching without clipping in bipolar systems |
| On-Resistance (RDS(on)) | 23 Ω typ - ensures minimal voltage drop and signal attenuation at 10 mA load |
| Turn-On Time (tON) | 100 ns typ - supports high-speed multiplexing up to ~3 MHz effective bandwidth |
| Channel On-Leakage (ID(on)) | 40 pA max at 25 °C - preserves accuracy in high-impedance sample-and-hold nodes |
| Supply Voltage Range | ±15 V (max 44 V V+ to V−) - accommodates industrial and test equipment rails |
| Logic Compatibility | TTL/CMOS - simplifies interface with microcontrollers and FPGA I/O without level shifters |
| Charge Injection | 60 pC typ - limits settling error in precision ADC front-ends and integrators |
Pinout & Package
Package: 16-pin narrow SOIC (JEDEC MS-012, body width 3.9 mm, pitch 1.27 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 | V+ | Positive supply rail - must be ≥ V− + 4.5 V for proper operation |
| 8, 15 | V− | Negative supply rail - referenced to GND; sets lower analog signal limit |
| 9 | GND | Analog/digital ground reference - requires low-impedance connection to minimize noise |
| 2, 14 | IN1, IN2 | Digital control inputs - active-high; drive S1/D1 and S2/D2 pairs respectively |
| 3, 5, 11, 13 | S1, D1, S2, D2 | Switch source/drain terminals - bidirectional; no polarity constraint when on |
| 4, 6, 7, 10, 12 | NC | No-connect pins - must remain unconnected per datasheet; not internally tied |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional analog conduction | Enables flexible signal path routing - same performance whether signal flows S→D or D→S |
| Flat on-resistance vs. voltage | ΔRDS(on) ≤ 3 Ω over ±15 V range - maintains consistent gain/attenuation in AC-coupled paths |
| Low charge injection (60 pC) | Reduces droop and offset error in switched-capacitor circuits and sample-and-hold stages |
| Single-supply operable | Functions with V+ = +12 V, V− = GND - eliminates need for negative rail in portable applications |
| Pb-free terminations (-E3 suffix) | Meets RoHS requirements; matte tin plating ensures solderability and long-term reliability |
Applications
| Audio Signal Routing | Test Equipment Multiplexing |
|---|---|
Use Scenario: Selecting between multiple line-level audio sources (e.g., microphone, DAC output, auxiliary input) before feeding into an amplifier or ADC. IC Role / Device Role / Timing Role: Dual SPST switch providing isolated, low-distortion signal paths with minimal crosstalk (< −94.8 dB). Use Value: Preserves wide dynamic range (±15 V swing) and avoids audible switching artifacts due to low 40 pA leakage and 60 pC charge injection. | Use Scenario: Routing DUT signals to different measurement instruments (oscilloscope, DMM, spectrum analyzer) within automated test systems. IC Role / Device Role / Timing Role: High-speed analog switch enabling sub-100 ns channel changes during sequential test sequences. Use Value: 100 ns tON supports >10 kS/s multiplexing; 44 V max rating allows safe handling of transient overvoltages common in bench environments. |
| Sample-and-Hold Circuits | Industrial Sensor Interface |
Use Scenario: Capturing instantaneous voltage from a high-impedance sensor (e.g., thermocouple amplifier) onto a hold capacitor. IC Role / Device Role / Timing Role: Precision switch isolating the sampling node during acquisition and hold phases. Use Value: 40 pA ID(on) minimizes capacitor discharge; flat RDS(on) ensures linear charging characteristics across full input range. | Use Scenario: Isolating multiple 4–20 mA current loop transmitters or ±10 V sensor outputs before conditioning and digitization in PLC modules. IC Role / Device Role / Timing Role: Robust analog switch rated for industrial supply rails and ESD-prone environments. Use Value: ±15 V analog range matches standard industrial I/O levels; Pb-free SOIC package supports reflow assembly and long-term field reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4617ESE+ | Single SPST, 35 Ω RDS(on), 125 ns tON, ±15 V rated, 16-pin SOIC | Lacks dual-channel integration - requires two devices for same functionality as DG401BDY | Select when needing higher voltage tolerance (±20 V) and integrated fault protection not present in DG401BDY |
| ADG1419BRUZ | Dual SPST, 1.3 Ω RDS(on), 120 ns tON, ±15 V rated, TSSOP-16 | Lower on-resistance but higher supply current (1.2 mA vs. 0.5 mA); different pinout | Select when ultra-low on-resistance is prioritized over power efficiency and legacy pin compatibility |
Compared with MAX4617ESE+ and ADG1419BRUZ, DG401BDY offers optimal balance of speed (100 ns), leakage (40 pA), and proven SOIC-16 footprint compatibility for drop-in replacement in existing designs - especially where low quiescent current and flat RDS(on) vs. voltage are essential.
Availability
DG401BDY is available at Aetrix Electronics and suitable for audio routing, test equipment multiplexing, and sample-and-hold circuits requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for DG401BDY 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 power MOSFETs, diodes, optoelectronics, and precision analog switches.
The DG401B series was developed for high-fidelity analog signal routing in battery-powered and industrial instrumentation, emphasizing low leakage, rail-to-rail operation, and robustness across temperature and supply variations.
FAQ
What is the maximum analog signal voltage supported by DG401BDY?
DG401BDY supports a guaranteed analog signal range of ±15 V, with absolute maximum ratings allowing up to 44 V between V+ and V− terminals. Signals exceeding V+ or V− are clamped by internal diodes - forward current must be limited to 30 mA continuous or 100 mA pulsed to avoid damage. This makes DG401BDY suitable for industrial ±10 V and ±15 V signal chains.
Does DG401BDY support single-supply operation?
Yes, DG401BDY supports single-supply operation - for example, with V+ = +12 V and V− = GND. In this configuration, the analog signal range becomes 0 V to +12 V, and logic inputs remain TTL/CMOS compatible. The device maintains 23 Ω typical on-resistance and 100 ns switching speed under single-supply conditions, as verified in the datasheet's "Specification" table.
Is DG401BDY pin-compatible with the original DG401?
Yes, DG401BDY is a direct functional and pin-compatible upgrade to the legacy DG401, retaining identical SOIC-16 pinout and electrical interface. Key improvements in DG401BDY include lower on-resistance (23 Ω vs. 35 Ω), faster switching (100 ns vs. 150 ns), and reduced leakage (40 pA vs. 100 pA), while maintaining backward compatibility in layout and firmware.
What is the thermal derating behavior of DG401BDY above 75 °C?
DG401BDY has a thermal derating factor of 7.6 mW/°C above 75 °C for the SOIC package. Its maximum power dissipation is 600 mW at ≤75 °C. At 100 °C ambient, allowable power drops to 600 mW − (25 °C × 7.6 mW/°C) = 410 mW. This derating ensures reliable operation in industrial enclosures without forced airflow.
How does DG401BDY handle charge injection in sample-and-hold applications?
DG401BDY specifies 60 pC typical charge injection, measured with CL = 10 nF and zero source impedance. In sample-and-hold use, this injects <1 mV error into a 100 nF hold capacitor - acceptable for 12-bit systems. Layout best practices (guard rings, minimized trace capacitance) further reduce effective error. The value is confirmed in Figure 4 and Table on page 3 of the DG401B datasheet (Doc #73069).
DG401BDY 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:
- 2
- On-State Resistance (Max):
- 45Ohm
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- 13V ~ 36V
- Voltage - Supply, Dual (V±):
- ±7V ~ 22V
- Switch Time (Ton, Toff) (Max):
- 150ns, 100ns
- -3db Bandwidth:
- -
- Charge Injection:
- 60pC
- Channel Capacitance (CS(off), CD(off)):
- 12pF, 12pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -94.8dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
DG401BDY FAQ
1.How can I place an order for DG401BDY through Aetrix?
Please submit a Request for Quotation (RFQ) for DG401BDY 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 DG401BDY reliable?
The price and inventory of DG401BDY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG401BDY is usually 5 days.
3.What payment methods are accepted for DG401BDY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG401BDY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG401BDY?
DG401BDY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG401BDY 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 DG401BDY?
For technical support, including DG401BDY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG401BDY requirements.
6.How does Aetrix verify that DG401BDY is sourced from the original manufacturer or authorized distributors?
All DG401BDY 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 DG401BDY meets industry standards.
7.What is the process for return or replacement of DG401BDY?
All DG401BDY units undergo pre-shipment inspection (PSI). If there is an issue with DG401BDY, 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 DG401BDY part is unused and in its original packaging.
Return procedure for DG401BDY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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