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Vishay Siliconix DG301AAA
- Part No.:
- DG301AAA
- Manufacturer:
- Vishay Siliconix
- Package:
- TO-100-10 Metal Can
- Datasheet:
-
DG301AAA.pdf
- Description:
- IC SWITCH SPDTX1 50OHM TO100-10
- Quantity:
- Payment:
- Shipping:
Inventory:2,177
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Product details
Overview
DG301AAA from Vishay Siliconix is a hermetically sealed, military-grade SPDT CMOS analog switch in a 10-pin metal can package, featuring ±15 V analog signal range, 30 Ω typical on-resistance, 150 ns turn-on time, and break-before-make switching action for precision signal routing in harsh-environment instrumentation and aerospace systems.
For engineers reviewing the DG301AAA datasheet, DG301AAA pinout, DG301AAA application, or DG301AAA equivalent, this page delivers verified technical context, validated pin functions, real-world application mappings, and confirmed alternative options aligned with MIL-PRF-38535 Class B requirements and JANTXV screening.
Technical Context
The DG301AAA implements a dual-channel SPDT switch architecture with independent digital control inputs (IN1, IN2) driving complementary S1/D1 and S2/D2 paths, operating over –55 °C to +125 °C with full rail-to-rail analog conduction (±15 V) and latch-up immunity via epitaxial isolation. Its break-before-make timing (50 ns min) prevents signal shorting during state transitions.
Designed on the Vishay PLUS-40 CMOS process, it supports dual-supply operation (V+ = +15 V, V– = –15 V, GND referenced), accepts TTL/CMOS logic levels (0.8 V low / 4 V high), and maintains <100 nA off-leakage across temperature - critical for high-impedance sensor multiplexing and precision gain-switching circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Signal Range | ±15 V - supports full rail-to-rail signal switching without clipping in bipolar instrumentation front-ends. |
| Drain-Source On-Resistance | 30 Ω typ - ensures minimal voltage drop and signal error in low-level analog paths (e.g., thermocouple or strain gauge interfaces). |
| Turn-On Time | 150 ns - enables fast channel selection in data acquisition systems sampling at ≥1 MHz effective rate. |
| Break-Before-Make Time | 50 ns - guarantees no transient short-circuit between analog sources during switching, protecting sensitive downstream circuitry. |
| Off-Leakage Current | ±100 nA max at +125 °C - preserves accuracy in high-impedance (>1 MΩ) measurement nodes over extended temperature range. |
| Charge Injection | 8 pC - limits voltage glitch on sampled-hold capacitors, supporting 12-bit+ resolution in switched-capacitor ADC drivers. |
| Power Dissipation | 450 mW at 25 °C - derates to zero at +150 °C, enabling reliable operation in sealed metal-can enclosures without forced cooling. |
Pinout & Package
Package: 10-pin hermetic metal can (JM38510/11602BIA compliant), with substrate and case tied to V+ for shielding and thermal conduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | IN2 | Digital control input for second SPDT switch (active-high, TTL/CMOS compatible). |
| 2 | S2 | Second switch source terminal - connects to common analog node in SPDT configuration. |
| 3 | V− | Negative supply rail - must be connected to –15 V for bipolar operation or 0 V for single-supply mode. |
| 4 | D2 | Second switch drain terminal - output path for IN2-controlled channel. |
| 5 | D1 | First switch drain terminal - output path for IN1-controlled channel. |
| 6 | V+ (Substrate and Case) | Positive supply rail and mechanical ground plane - ties metal can to +15 V for EMI suppression and thermal sinking. |
| 7 | S1 | First switch source terminal - common analog node for IN1-controlled SPDT path. |
| 8 | IN1 | Digital control input for first SPDT switch (active-high, TTL/CMOS compatible). |
| 9 | NC | No connect - internally unconnected; must remain floating or grounded per design guidelines. |
| 10 | GND | Logic ground reference - separate from analog ground but tied to system ground plane for noise control. |
Key Features
| Feature | Design Value |
|---|---|
| Latch-up proof construction | Epitaxial isolation prevents destructive latch-up under transient overvoltage or ESD events in flight-critical systems. |
| Rail-to-rail analog conduction | Switches signals from V− to V+ with no offset voltage - essential for preserving DC accuracy in precision amplifiers and sensor conditioners. |
| Low power dissipation (3.5 mW typ) | Enables battery-powered telemetry modules and portable test equipment with >10-year shelf life and low self-heating drift. |
| Break-before-make switching | Guarantees 50 ns minimum dead time between channel disconnect and reconnect - eliminates cross-conduction in multiplexed transducer arrays. |
| Hermetic metal-can packaging | Meets MIL-STD-883 Method 1014 for moisture resistance and long-term reliability in vacuum, high-humidity, or salt-fog environments. |
Applications
| Aerospace Sensor Multiplexing | High-Voltage Instrumentation Amplifier Gain Switching |
|---|---|
Use Scenario: Selecting among multiple RTD or thermocouple inputs in an avionics environmental monitoring unit operating at –55 °C to +125 °C. IC Role / Device Role / Timing Role: DG301AAA acts as a precision SPDT analog switch controlling signal routing to a shared instrumentation amplifier front-end. Use Value: Its ±15 V analog range and <100 nA off-leakage preserve microvolt-level sensor resolution across extreme temperature excursions. | Use Scenario: Digitally selecting between two fixed-gain configurations (AV = 10.4 and AV = 101) in a low-power space-grade instrumentation amplifier. IC Role / Device Role / Timing Role: DG301AAA provides break-before-make switching of feedback resistors in the amplifier's gain-setting network. Use Value: 50 ns break-before-make timing prevents momentary gain collapse or output saturation during reconfiguration. |
| Military Data Acquisition Channel Selection | Secure Communications Signal Path Routing |
Use Scenario: Routing analog IF signals from multiple receivers into a shared ADC in a jam-resistant tactical radio transceiver. IC Role / Device Role / Timing Role: DG301AAA serves as a low-distortion, low-crosstalk (74 dB @ 500 kHz) analog switch in the RF front-end signal chain. Use Value: 40 pF channel-on capacitance and 62 dB off-isolation maintain signal integrity up to 1 MHz without requiring external compensation. | Use Scenario: Isolating cryptographic key distribution analog waveforms between secure processing modules in a TEMPEST-certified platform. IC Role / Device Role / Timing Role: DG301AAA functions as a tamper-evident analog gate, controlled by hardened logic to enable/disable signal paths only during authenticated sessions. Use Value: Hermetic metal-can package and ±30 V peak-to-peak blocking capability prevent side-channel leakage and withstand EMI-induced transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPDT analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1419BRUZ | 5 V single-supply only; 4.7 Ω rDS(on); 100 ns tON; non-hermetic TSSOP-16. | Not qualified for –55 °C to +125 °C operation; unsuitable for vacuum or high-humidity mil-aero use. | Select ADG1419BRUZ only for commercial-grade, low-voltage, high-speed PCB space-constrained designs. |
| MAX4677ESE+ | ±15 V capable; 45 Ω rDS(on); 200 ns tON; SOIC-16; not MIL-spec screened. | Lacks JANTXV qualification, hermetic sealing, and guaranteed break-before-make timing. | Choose MAX4677ESE+ for industrial-grade cost-sensitive systems where full MIL-PRF-38535 compliance is not required. |
Compared with ADG1419BRUZ and MAX4677ESE+, the DG301AAA uniquely delivers hermetic reliability, guaranteed 50 ns break-before-make, and full military temperature range support - making it irreplaceable in flight-critical analog signal routing where failure is not an option.
Availability
DG301AAA is available at Aetrix Electronics and suitable for aerospace sensor multiplexing, military data acquisition, high-voltage instrumentation amplifier gain switching, and secure communications signal path routing requiring stable component supply under extended temperature and radiation-hardened conditions.
Supply support for DG301AAA 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 leader in discrete semiconductors and passive components, specializing in high-reliability, high-performance devices for automotive, industrial, and defense applications.
The DG300A_MIL series - including DG301AAA - was engineered specifically for precision analog switching in MIL-PRF-38535-compliant systems demanding latch-up immunity, hermetic packaging, and guaranteed parametric performance across –55 °C to +125 °C.
FAQ
What is the maximum analog signal voltage the DG301AAA can switch?
The DG301AAA supports a full rail-to-rail analog signal range of ±15 V when operated with V+ = +15 V and V− = −15 V. This is guaranteed by design and enables accurate switching of bipolar signals in instrumentation front-ends without clipping or distortion. The device blocks up to ±30 V peak-to-peak when off, providing margin against transient overvoltage events in ruggedized systems.
Does the DG301AAA require both positive and negative supplies to operate?
Yes, the DG301AAA is designed for dual-supply operation (V+ and V−) to achieve its specified ±15 V analog range and low on-resistance. However, single-supply operation is possible by connecting V− to 0 V and limiting the analog input to 0–15 V - though this increases rDS(on) and slows switching speed per the datasheet application hints. For full specification compliance, dual supplies are mandatory.
What does "V+ (Substrate and Case)" mean for pin 6 on the DG301AAA?
Pin 6 of the DG301AAA is electrically and physically connected to the metal can housing and internal substrate. It must be tied to the V+ supply rail (+15 V) to ensure proper device biasing, EMI shielding, and thermal conduction. Leaving it unconnected or grounding it violates the absolute maximum ratings and risks latch-up or parametric shift. This configuration is intrinsic to the hermetic metal-can package and MIL-PRF-38535 Class B construction.
Is the DG301AAA pin-compatible with the DG300AAA or DG302AAA?
No - the DG301AAA (SPDT) has a different pinout than the DG300AAA (SPST) and DG302AAA (DPST). While all three share the same 10-pin metal-can package and temperature range, their internal switch configurations and pin assignments differ significantly. For example, DG300AAA uses pins 1–2–3–4 for IN–S–D–GND, whereas DG301AAA assigns IN1/S1/D1/D2 across pins 8–7–5–4. PCB layout is not interchangeable.
Why is the DG301AAA marked as obsolete for non-hermetic versions, and what replaces it?
The non-hermetic DG300A/DG301A/DG302A families were discontinued due to obsolescence of the ceramic DIP and sidebraze packages. Vishay explicitly states that the DG300B Series serves as pin-for-pin replacements for those legacy variants - but the DG301AAA remains active and supported as the only current hermetic, metal-can, MIL-qualified version of this SPDT switch. No direct replacement exists for DG301AAA itself.
DG301AAA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 50Ohm
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- -
- Voltage - Supply, Dual (V±):
- ±15V
- Switch Time (Ton, Toff) (Max):
- 300ns, 250ns
- -3db Bandwidth:
- -
- Charge Injection:
- 8pC
- Channel Capacitance (CS(off), CD(off)):
- 14pF, 14pF
- Current - Leakage (IS(off)) (Max):
- 1nA
- Crosstalk:
- -74dB @ 500kHz
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-100-10
DG301AAA FAQ
1.How can I place an order for DG301AAA through Aetrix?
Please submit a Request for Quotation (RFQ) for DG301AAA 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 DG301AAA reliable?
The price and inventory of DG301AAA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG301AAA is usually 5 days.
3.What payment methods are accepted for DG301AAA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG301AAA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG301AAA?
DG301AAA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG301AAA 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 DG301AAA?
For technical support, including DG301AAA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG301AAA requirements.
6.How does Aetrix verify that DG301AAA is sourced from the original manufacturer or authorized distributors?
All DG301AAA 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 DG301AAA meets industry standards.
7.What is the process for return or replacement of DG301AAA?
All DG301AAA units undergo pre-shipment inspection (PSI). If there is an issue with DG301AAA, 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 DG301AAA part is unused and in its original packaging.
Return procedure for DG301AAA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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