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Vishay Siliconix DG401AK
- Part No.:
- DG401AK
- Manufacturer:
- Vishay Siliconix
- Package:
- 16-CDIP (0.300", 7.62mm)
- Datasheet:
-
DG401AK.pdf
- Description:
- IC SW SPST-NOX2 35OHM 16CERDIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,873
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Product details
Overview
DG401AK from Vishay Siliconix is a high-reliability, dual SPST analog switch IC designed for precision signal routing in military and aerospace systems. It features 44-V supply rating, 15-V analog signal range, 20 Ω typical on-resistance (rDS(on)), 100 ns typical turn-on time (tON), and operates across –55°C to +125°C. Used in Hi-Rel test equipment and PBX switching where wide temperature stability and low leakage are critical.
For engineers reviewing the DG401AK datasheet, DG401AK pinout, DG401AK application, or DG401AK equivalent, this page delivers verified electrical parameters, LCC-20 package mapping, break-before-make timing behavior, and direct alternatives for radiation-tolerant analog switching designs.
Technical Context
The DG401AK implements two independent single-pole single-throw (SPST) CMOS analog switches with guaranteed break-before-make operation. Each channel conducts bidirectionally with flat on-resistance over ±15 V analog range and supports ±16.5 V supplies.
It uses Vishay Siliconix's high-voltage silicon-gate process to achieve 44 V max supply rating and latchup immunity via epitaxial isolation. Logic inputs are TTL/CMOS compatible (0.8 V low / 2.4 V high thresholds) and support single-supply operation when VL is tied to V+.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Signal Range | ±15 V - Supports full-rail audio, video, and sensor signals without clipping |
| rDS(on) Typ | 20 Ω at ±13.5 V - Enables low insertion loss in precision instrumentation paths |
| tON Typ | 100 ns - Meets timing requirements for fast-sampling data acquisition systems |
| ID(on) Max | 40 pA at 125°C - Ensures minimal signal corruption in high-impedance sample-and-hold circuits |
| Supply Voltage Range | V+ to V– ≤ 44 V - Allows operation with ±15 V, ±12 V, or asymmetric rails up to +30 V/–14 V |
| Operating Temp | –55°C to +125°C - Qualified per MIL-PRF-38535 Class K for space and defense platforms |
| Power Dissipation | 900 mW (LCC-20) - Sustains continuous operation under full-load conditions at max temperature |
Pinout & Package
LCC-20 ceramic leadless chip carrier (J-lead), hermetically sealed, qualified to MIL-STD-883 for high-reliability applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | NC | No-connect pins - Electrically isolated; must remain unconnected per design |
| 9, 10, 11, 12, 13 | V– | Negative supply rail - Must be decoupled to GND with ≥1 µF low-ESR capacitor |
| 14, 15 | S2, D2 | Source and drain of second SPST switch - Bidirectional signal path with matched rDS(on) |
| 16, 17 | GND, NC | Ground reference and no-connect - GND pin provides substrate return; NC must float |
| 18, 19 | S1, D1 | Source and drain of first SPST switch - Independent of S2/D2; enables dual-channel routing |
| 20 | V+ | Positive supply rail - Accepts up to +30 V; requires local 1 µF ceramic bypass |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional conduction | Equal on-resistance in both directions - Eliminates polarity constraints in AC-coupled signal paths |
| Break-before-make switching | Guaranteed by process design - Prevents momentary shorting between channels during state transitions |
| Ultra-low leakage | ≤40 pA ID(on) at 125°C - Maintains accuracy in >1 MΩ impedance sample-and-hold and peak-detect circuits |
| Single-supply logic interface | VL pin accepts 0.3 V below GND to V+ +0.3 V - Enables direct connection to microcontroller I/O without level shifters |
| High-voltage tolerance | 44 V max V+ to V– differential - Supports legacy ±15 V industrial control and telecom power rails |
Applications
| Test Equipment Signal Routing | PBX Analog Line Switching |
|---|---|
Use Scenario: Automated test systems route multiple sensor outputs to shared ADC inputs while maintaining signal integrity across temperature extremes. IC Role / Device Role / Timing Role: Dual SPST switch isolating analog sources before multiplexing; tON < 150 ns ensures synchronization with 10 MHz sampling clocks. Use Value: 20 Ω rDS(on) and <40 pA leakage preserve measurement accuracy in 16-bit DAQ systems operating from –55°C to +125°C. | Use Scenario: Private branch exchange systems switch voice-grade analog lines between trunks and extensions under varying load conditions. IC Role / Device Role / Timing Role: High-reliability analog path selector handling ±12 V ringing signals and 0 to –48 V talk battery; break-before-make prevents cross-talk during line seizure. Use Value: 44 V supply rating and 15 V analog range accommodate legacy telephony voltage swings without external clamping. |
| Hi-Rel Sample-and-Hold Circuits | Military Data Acquisition Front-Ends |
Use Scenario: Precision acquisition modules capture transient analog waveforms in avionics sensors, requiring nanosecond-level charge injection control. IC Role / Device Role / Timing Role: SPST switch connecting hold capacitor to input source; 60 pC typical charge injection minimizes pedestal error after sampling. Use Value: Flat rDS(on) vs. voltage ensures linear settling across full ±15 V input range, critical for ±10 V sensor interfaces. | Use Scenario: Ruggedized field-deployable instruments acquire vibration, pressure, and temperature data in jet engine monitoring systems. IC Role / Device Role / Timing Role: Dual-channel analog multiplexer enabling simultaneous sampling of differential sensor pairs; LCC-20 package withstands thermal shock and vibration. Use Value: MIL-PRF-38535 Class K qualification and –55°C to +125°C operation ensure uninterrupted function in turbine bay environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual SPST analog switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1419BRUZ | 44 V supply rating, 0.7 Ω rDS(on), but only –40°C to +125°C temp range and SOIC-16 package | Not qualified to MIL-STD-883; lacks LCC-20 hermeticity and Class K screening | Select for commercial/high-speed applications where ultra-low on-resistance outweighs radiation tolerance |
| MAX4677ETA+ | 36 V supply rating, 4.5 Ω rDS(on), –40°C to +85°C, 12-pin TDFN package | Lower voltage rating and narrower temp range; unsuitable for Hi-Rel aerospace use | Choose for space-constrained consumer test gear where footprint and cost dominate reliability requirements |
Compared with DG401AK, ADG1419BRUZ offers lower on-resistance but lacks military temperature range and hermetic packaging, while MAX4677ETA+ reduces size and cost at the expense of voltage headroom and environmental robustness-making DG401AK the sole option for Class K-certified dual SPST switching in extreme environments.
Availability
DG401AK is available at Aetrix Electronics and suitable for Hi-Rel test equipment, PBX infrastructure, and military data acquisition systems requiring stable component supply across extended temperature and long lifecycle programs.
Supply support for DG401AK 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 power MOSFETs, analog switches, and high-reliability components for industrial, automotive, and defense markets.
The DG401AK belongs to the DG401/403/405 family of high-speed CMOS analog switches engineered for precision signal routing in mission-critical systems where temperature resilience, low leakage, and guaranteed break-before-make timing are mandatory.
FAQ
What is the maximum supply voltage rating for DG401AK?
The DG401AK supports a maximum V+ to V– differential voltage of 44 V. This allows operation with standard ±15 V rails (30 V total), ±12 V (24 V), or asymmetric configurations such as +30 V/–14 V. The absolute maximum ratings also specify GND to V– ≤ 25 V and VL range from (GND – 0.3 V) to (V+ + 0.3 V). Exceeding these limits risks permanent damage to the DG401AK.
Does DG401AK support single-supply operation?
Yes, DG401AK supports single-supply operation via its VL pin, which accepts logic supply voltages from (GND – 0.3 V) to (V+ + 0.3 V). When VL is tied to V+, the device accepts standard TTL/CMOS logic levels (0.8 V low, 2.4 V high) directly from 5 V microcontrollers without level-shifting circuitry-enabling simplified interface design in battery-powered or compact DG401AK-based systems.
What is the guaranteed break-before-make timing for DG401AK?
The DG401AK guarantees break-before-make operation due to its internal process design and layout-though exact delay values are not specified in the datasheet. Unlike the DG403 (which specifies 5 ns minimum tD), the DG401AK's SPST architecture inherently avoids simultaneous conduction because each switch operates independently with no shared control interlock. This eliminates risk of signal shorting during transitions in DG401AK dual-channel routing applications.
Is DG401AK pin-compatible with other variants in the DG401/403/405 family?
No, DG401AK is not pin-compatible with DG403AK or DG405AK. While all three share the LCC-20 package in their /883 versions, their pinouts differ significantly: DG401AK has dedicated S1/D1 and S2/D2 pairs with multiple NC pins, whereas DG403AK allocates pins for four SPDT switches (S1/S2/S3/S4, D1/D2/D3/D4) and DG405AK configures two DPST switches. Using DG401AK in place of DG403AK would result in incorrect signal routing and functional failure.
What is the leakage current specification for DG401AK at maximum temperature?
At +125°C, DG401AK guarantees channel-on leakage current (ID(on)) of ≤ 10 nA and off-state leakage (ID(off)) of ≤ 5 nA, per the datasheet's "Full" temperature column. These values reflect worst-case production limits-not typical performance-and are measured with V+ = +16.5 V, V– = –16.5 V, and VS = VD = ±15.5 V. This low leakage preserves signal fidelity in high-impedance DG401AK applications like precision peak detectors and electrometer-grade front-ends.
DG401AK 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):
- 35Ohm
- 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):
- 250pA
- Crosstalk:
- -90dB @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-CERDIP
DG401AK FAQ
1.How can I place an order for DG401AK through Aetrix?
Please submit a Request for Quotation (RFQ) for DG401AK 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 DG401AK reliable?
The price and inventory of DG401AK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG401AK is usually 5 days.
3.What payment methods are accepted for DG401AK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG401AK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG401AK?
DG401AK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG401AK 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 DG401AK?
For technical support, including DG401AK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG401AK requirements.
6.How does Aetrix verify that DG401AK is sourced from the original manufacturer or authorized distributors?
All DG401AK 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 DG401AK meets industry standards.
7.What is the process for return or replacement of DG401AK?
All DG401AK units undergo pre-shipment inspection (PSI). If there is an issue with DG401AK, 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 DG401AK part is unused and in its original packaging.
Return procedure for DG401AK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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