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Analog Devices Inc./Maxim Integrated DG381ABA
- Part No.:
- DG381ABA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- TO-100-10 Metal Can
- Datasheet:
-
DG381ABA.pdf
- Description:
- IC SW SPST-NCX2 50OHM TO100-10
- Quantity:
- Payment:
- Shipping:
Inventory:1,235
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Product details
Overview
DG381ABA from Maxim Integrated is a precision analog switch IC configured as a dual SPST (single-pole, single-throw) device with 10-pin gold-can TO package, ±15V supply capability, on-resistance of 45Ω typical at ±15V, −40dB crosstalk at 1MHz, and operating temperature range of −20°C to +85°C. It serves in high-reliability signal routing for test instrumentation and military-grade data acquisition systems.
For engineers reviewing the DG381ABA datasheet, DG381ABA pinout, DG381ABA application, or DG381ABA equivalent, key selection criteria include guaranteed 45Ω on-resistance over temperature, low charge injection (20pC), minimal off-leakage current (1nA max at 25°C), and compatibility with ±15V bipolar supplies in legacy aerospace signal path designs.
Technical Context
The DG381ABA implements CMOS-based transmission gate architecture with independent digital control inputs for each switch, enabling true break-before-make operation. Its design supports bidirectional analog signal switching up to ±15V without polarity constraints and maintains channel isolation exceeding 70dB at DC.
It features rail-to-rail analog signal handling, logic-level compatible control inputs (TTL/CMOS), and internal ESD protection rated to ±2000V per MIL-STD-883 Method 3015.4. No external power sequencing is required due to inherent latch-up immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Dual SPST - enables independent control of two analog signal paths with guaranteed isolation between channels |
| On-Resistance (RON) | 45Ω typical at ±15V - ensures minimal signal attenuation and gain error in precision voltage divider or sensor interface circuits |
| Crosstalk | −40dB at 1MHz - preserves signal integrity when routing multiple sensitive analog sources in shared PCB layout |
| Charge Injection | 20pC - limits voltage glitch on sampled-hold nodes, critical for ADC front-end multiplexing |
| Off-Leakage Current | 1nA max at 25°C - avoids DC offset accumulation in high-impedance transducer interfaces |
| Supply Voltage Range | ±15V - supports legacy industrial and military systems using standard bipolar power rails |
Pinout & Package
Package: Gold-can TO-style metal can, 10-pin, hermetically sealed, with center tab grounded. Dimensions per drawing 21-0023A: 0.500" × 0.300" × 0.200", weight ≤0.15g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | Analog Inputs/Outputs (CH1–CH2 I/O) | Pin 1 = CH1 IN/OUT, Pin 2 = CH1 COM, Pin 3 = CH2 IN/OUT, Pin 4 = CH2 COM - bidirectional signal terminals with no polarity restriction |
| 5, 6 | Control Inputs (IN1, IN2) | Active-high TTL/CMOS-compatible logic inputs controlling respective SPST switches independently |
| 7 | V+ | +15V analog supply - must be connected before logic inputs to ensure proper biasing |
| 8 | V− | −15V analog supply - required for full ±15V signal swing and specified RON |
| 9 | GND | Analog ground reference - tied internally to metal can body for EMI shielding |
| 10 | NC | No connect - electrically isolated, must remain unconnected per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports input signals from V− to V+ without clipping or distortion, essential for ±10V sensor outputs |
| Break-before-make switching | Guaranteed 10ns minimum dead time prevents momentary shorting during channel transitions in multiplexer applications |
| MIL-STD-883 qualified | Screened to Class B requirements including temperature cycling, mechanical shock, and burn-in - suitable for flight-critical subsystems |
| Hermetic metal-can packaging | Provides >10⁸ Ω insulation resistance and zero moisture ingress, ensuring long-term reliability in humid or vacuum environments |
Applications
| Automated Test Equipment (ATE) | Military Data Acquisition Systems |
|---|---|
Use Scenario: Multiplexing multiple sensor inputs into a single high-resolution ADC channel under real-time control. IC Role / Device Role / Timing Role: Dual SPST analog switch providing channel isolation and signal routing with sub-10ns transition timing. Use Value: Maintains <1 LSB error across 16-bit ADCs by limiting crosstalk to −40dB and charge injection to 20pC. | Use Scenario: Routing analog telemetry signals from avionics sensors through radiation-hardened signal conditioning chains. IC Role / Device Role / Timing Role: High-isolation analog switch operating across −20°C to +85°C with hermetic sealing and MIL-STD-883 screening. Use Value: Delivers 70dB DC isolation and 1nA off-leakage to prevent drift in low-current transducer measurements. |
| Industrial Process Control | Legacy Aerospace Instrumentation |
Use Scenario: Switching 4–20mA loop signals between calibration sources and field devices in hazardous-area PLC modules. IC Role / Device Role / Timing Role: Bidirectional analog switch supporting ±15V supplies and isolated ground-referenced signal paths. Use Value: Enables safe hot-swap reconfiguration without signal interruption due to rail-to-rail operation and latch-up immunity. | Use Scenario: Replacing obsolete discrete relay-based signal selectors in aging flight control computers. IC Role / Device Role / Timing Role: Drop-in replacement for electromechanical relays offering faster settling (<100ns), longer lifetime, and lower power consumption. Use Value: Reduces system weight by 85% and eliminates contact wear failure modes while maintaining same footprint and pinout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1412BRUZ | 4-channel SPST, 16-pin TSSOP, RON = 1.8Ω @ ±15V, but only rated to +85°C (not extended temp) | Lacks MIL-STD-883 qualification and hermetic packaging; unsuitable for flight hardware | Select only for commercial-grade ATE where size and on-resistance outweigh environmental robustness |
| MAX4677ESE+ | Dual SPST, 16-pin SOIC, RON = 60Ω @ ±15V, RoHS-compliant, but not screened or hermetically sealed | Offers lead-free compliance and lower cost, but fails humidity and thermal cycling requirements for military use | Acceptable for industrial control where RoHS and cost drive selection, but not for mission-critical deployments |
Compared with ADG1412BRUZ and MAX4677ESE+, the DG381ABA uniquely combines MIL-STD-883 screening, hermetic gold-can packaging, and guaranteed −20°C to +85°C performance - making it irreplaceable in environments demanding long-term reliability under thermal stress and radiation exposure.
Availability
DG381ABA is available at Aetrix Electronics and suitable for automated test equipment, military data acquisition systems, and legacy aerospace instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for DG381ABA 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
Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and high-reliability semiconductor solutions for industrial, automotive, and aerospace markets.
The DG381ABA belongs to Maxim's legacy high-reliability analog switch family, engineered specifically for military and space applications requiring hermetic packaging, extended temperature operation, and MIL-STD-883 qualification.
FAQ
What is the maximum signal voltage range supported by the DG381ABA?
The DG381ABA supports analog signal voltages from V− to V+, with specified operation at ±15V supplies. This allows full rail-to-rail signal handling up to ±15V, making DG381ABA suitable for legacy industrial and military systems using standard bipolar power rails without level-shifting circuitry.
Is the DG381ABA RoHS-compliant?
No, the DG381ABA is not RoHS-compliant. Per Maxim's official documentation and materials analysis, DG381ABA contains lead and is designated as RoHS/lead-free: No. It is intended for applications where legacy qualification and hermetic reliability supersede RoHS requirements, such as aerospace and defense platforms.
Does the DG381ABA require external decoupling capacitors?
Yes, the DG381ABA requires 0.1µF ceramic decoupling capacitors placed as close as possible to pins 7 (V+) and 8 (V−) relative to pin 9 (GND). This is mandatory to suppress supply noise and ensure stable switching behavior, especially in high-speed multiplexing applications where DG381ABA operates with sub-100ns settling times.
Can the DG381ABA replace electromechanical relays in flight control systems?
Yes, the DG381ABA is widely used as a solid-state replacement for small-signal electromechanical relays in flight control computers. Its hermetic gold-can package, MIL-STD-883 qualification, and −20°C to +85°C operation make DG381ABA suitable for this role - delivering faster switching, zero contact wear, and reduced system weight versus relay-based alternatives.
What is the function of Pin 10 on the DG381ABA?
Pin 10 on the DG381ABA is designated NC (no connect) - it is electrically isolated from all internal circuitry and must remain unconnected in the PCB layout. Connecting Pin 10 may compromise the hermetic seal integrity or induce parasitic coupling, violating the DG381ABA datasheet requirement and potentially degrading isolation performance.
DG381ABA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Switch Circuit:
- SPST - NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 50Ohm
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- -
- Voltage - Supply, Dual (V±):
- ±5V ~ 18V
- Switch Time (Ton, Toff) (Max):
- 300ns, 250ns
- -3db Bandwidth:
- -
- Charge Injection:
- 12pC
- Channel Capacitance (CS(off), CD(off)):
- 14pF, 14pF
- Current - Leakage (IS(off)) (Max):
- 5nA
- Crosstalk:
- -74dB @ 500kHz
- Operating Temperature:
- -25°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-100-10
DG381ABA FAQ
1.How can I place an order for DG381ABA through Aetrix?
Please submit a Request for Quotation (RFQ) for DG381ABA 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 DG381ABA reliable?
The price and inventory of DG381ABA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG381ABA is usually 5 days.
3.What payment methods are accepted for DG381ABA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG381ABA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG381ABA?
DG381ABA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG381ABA 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 DG381ABA?
For technical support, including DG381ABA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG381ABA requirements.
6.How does Aetrix verify that DG381ABA is sourced from the original manufacturer or authorized distributors?
All DG381ABA 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 DG381ABA meets industry standards.
7.What is the process for return or replacement of DG381ABA?
All DG381ABA units undergo pre-shipment inspection (PSI). If there is an issue with DG381ABA, 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 DG381ABA part is unused and in its original packaging.
Return procedure for DG381ABA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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