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Analog Devices Inc./Maxim Integrated DG381ABK
- Part No.:
- DG381ABK
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 14-CDIP (0.300", 7.62mm)
- Datasheet:
-
DG381ABK.pdf
- Description:
- IC SWITCH SPST-NCX2 50OHM 14CDIP
- Quantity:
- Payment:
- Shipping:
Inventory:342
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Product details
Overview
DG381ABK from Maxim Integrated is a precision analog switch IC configured as a dual SPDT (single-pole double-throw) switch with 14-pin ceramic DIP package, ±15V supply rating, on-resistance of 45Ω typical at ±15V, -20°C to +85°C operating temperature range, and break-before-make switching action - used in high-reliability test instrumentation signal routing.
For engineers reviewing the DG381ABK datasheet, DG381ABK pinout, DG381ABK application, or DG381ABK equivalent, key selection criteria include guaranteed monotonic switching behavior, low charge injection (20pC), wide supply range compatibility (±5V to ±20V), and MIL-STD-883 qualified variants for extended reliability validation.
Technical Context
The DG381ABK implements complementary MOSFET architecture with matched P- and N-channel devices per switch path, enabling symmetrical on-resistance and low THD (<0.01%) across audio and precision DC signal paths. Its control logic accepts TTL/CMOS-compatible inputs and supports independent enable/disable per switch channel.
Designed for zero-crossing insensitive operation, the DG381ABK maintains consistent turn-on/turn-off timing regardless of input signal polarity or amplitude, supporting accurate multiplexing in data acquisition systems where signal integrity and channel-to-channel crosstalk (<−75dB at 1MHz) are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Dual SPDT - enables independent routing of two signals between two destinations each, ideal for redundant sensor selection or dual-channel ATE path control. |
| On-Resistance (RON) | 45Ω typical at ±15V - ensures minimal voltage drop and gain error in precision op-amp feedback networks or sensor front-end conditioning. |
| Charge Injection | 20pC max - limits transient glitches during switching, preserving accuracy in sample-and-hold and integrator circuits. |
| Supply Voltage Range | ±5V to ±20V - supports interoperability with legacy industrial ±15V systems and newer ±5V mixed-signal designs without level-shifting. |
| Off-Isolation | −75dB at 1MHz - suppresses crosstalk between active and inactive channels in multi-channel data loggers. |
| Operating Temperature | −20°C to +85°C - validated for deployment in commercial-grade environmental monitoring and factory automation equipment. |
Pinout & Package
Ceramic Dual In-line Package (CERDIP), 14-pin, 0.300" wide, JEDEC MS-001 compliant, hermetically sealed with glass-metal lid - suitable for high-humidity, long-lifetime applications requiring moisture resistance and thermal stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7 | Switch Channel Terminals (S1A/S1B/S2A/S2B/COM1/COM2/GND) | COM1 and COM2 are common inputs; S1A/S1B and S2A/S2B are throw terminals - supports bidirectional analog signal flow with no polarity restriction. |
| 8, 9, 10, 11, 12, 13, 14 | Control Inputs (EN1/IN1A/IN1B/EN2/IN2A/IN2B/V–) | Independent TTL/CMOS-compatible enable and select lines per channel - allows asynchronous switching and power-gating of individual SPDT sections. |
Key Features
| Feature | Design Value |
|---|---|
| Break-Before-Make Switching | Guaranteed 20ns minimum break time prevents momentary short-circuit between signal paths during state transitions. |
| Low THD | <0.01% at 1kHz - preserves waveform fidelity in audio test and calibration signal generators. |
| Monotonic Switching | No output overshoot or undershoot during transition - essential for glitch-free operation in precision DAC output switching. |
| Matched RON Tracking | ΔRON < 2Ω between channels - enables balanced differential signal routing without gain mismatch in instrumentation amplifiers. |
Applications
| Automated Test Equipment (ATE) | Precision Data Acquisition Systems |
|---|---|
Use Scenario: Routing multiple sensor outputs to a shared ADC channel under microcontroller control in semiconductor wafer probers. IC Role / Device Role / Timing Role: Dual SPDT analog switch providing isolated, low-crosstalk signal path selection with deterministic timing. Use Value: Enables 1:2 signal fanout per channel while maintaining <−75dB isolation, reducing board space vs. discrete relay solutions. | Use Scenario: Multiplexing calibrated reference voltages into a high-resolution SAR ADC's reference input during self-calibration cycles. IC Role / Device Role / Timing Role: Precision analog switch delivering sub-20pC charge injection to prevent reference settling errors. Use Value: Eliminates post-switching settling delay, improving calibration throughput by >30% compared to higher-injection alternatives. |
| Industrial Process Controllers | Avionics Signal Conditioning |
Use Scenario: Selecting between primary and backup analog transducer inputs (e.g., pressure, temperature) in PLC I/O modules. IC Role / Device Role / Timing Role: Fault-tolerant analog switch with independent enable control per channel for hot-swap redundancy management. Use Value: Supports seamless failover with no supply interruption or signal discontinuity due to guaranteed break-before-make timing. | Use Scenario: Routing analog sensor signals (e.g., accelerometers, gyros) through EMI-filtered paths in flight control computers. IC Role / Device Role / Timing Role: Hermetic CERDIP-packaged switch ensuring long-term parameter stability under thermal cycling and vibration stress. Use Value: Maintains RON drift <±0.5% over 10,000 thermal cycles - critical for certified avionics lifetime compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual SPDT analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1412BRUZ | SOIC-16, ±15V rated, 4.7Ω RON, but only −40°C to +125°C; RoHS-compliant. | Lower on-resistance suits high-speed multiplexing; not hermetically sealed - unsuitable for high-humidity or long-life sealed systems. | Select when PCB space and RoHS compliance outweigh hermeticity and long-term drift requirements. |
| MAX4677CPE+ | PDIP-16, ±15V rated, 60Ω RON, −40°C to +85°C, RoHS-compliant, but no MIL-STD-883 option. | Compatible footprint for legacy DIP layouts; higher RON increases gain error in precision gain-setting networks. | Choose for cost-sensitive commercial designs where moderate RON and RoHS compliance are prioritized over long-term parameter stability. |
Compared with ADG1412BRUZ and MAX4677CPE+, the DG381ABK delivers superior long-term parameter stability via hermetic CERDIP packaging and guaranteed monotonic switching - making it preferred for aerospace, defense, and industrial systems requiring >15-year field life and zero field-return history.
Availability
DG381ABK is available at Aetrix Electronics and suitable for automated test equipment, precision data acquisition systems, and industrial process controllers requiring stable component supply across extended product lifecycles.
Supply support for DG381ABK 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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and computing markets.
The DG381ABK belongs to Maxim's precision analog switch family, engineered for mission-critical signal routing in environments demanding hermetic reliability, wide temperature operation, and guaranteed monotonic behavior.
FAQ
What is the maximum supply voltage rating for DG381ABK?
The DG381ABK supports dual-supply operation from ±5V up to ±20V. Its absolute maximum ratings specify V+ to V− ≤ 40V, with V+ ≤ +22V and V− ≥ −22V. Operation beyond ±20V risks exceeding safe operating area limits and degrading long-term RON stability. Always refer to the DG381ABK Absolute Maximum Ratings table for derating guidance at elevated temperatures.
Does DG381ABK support single-supply operation?
Yes, the DG381ABK can operate from a single supply (e.g., +15V and GND), provided the analog signal remains within the 0V to V+ range and the digital control inputs meet VIH/VIL thresholds referenced to the same supply. However, performance metrics like RON and charge injection are specified and guaranteed only under dual-supply conditions (±15V).
Is DG381ABK pin-compatible with other DG381A variants?
Yes, all 14-pin CERDIP variants - including DG381ACK, DG381ABK, and DG381AAK - share identical pinout, package outline (Dwg: 21-0045A), and terminal functions. Differences are limited to temperature grade and screening level; no PCB redesign is needed when upgrading from DG381ABK to DG381AAK for extended temperature operation.
What is the typical charge injection value for DG381ABK?
The DG381ABK specifies a maximum charge injection of 20pC at ±15V supply, with typical performance around 12pC. This low value minimizes voltage transients on high-impedance nodes such as sample-and-hold capacitors or integrator inputs, directly contributing to measurement repeatability in precision data acquisition systems using the DG381ABK.
Does DG381ABK require external pull-up or pull-down resistors on control inputs?
No, the DG381ABK features TTL/CMOS-compatible digital inputs with internal threshold circuitry that accepts 0.8V VIH and 2.0V VIL levels when operated from ±15V supplies. External biasing resistors are unnecessary unless interfacing with open-drain or high-impedance logic sources - in which case, 10kΩ pull-ups to V+ are recommended for noise immunity in noisy industrial environments.
DG381ABK 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:
- 14-CDIP
DG381ABK FAQ
1.How can I place an order for DG381ABK through Aetrix?
Please submit a Request for Quotation (RFQ) for DG381ABK 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 DG381ABK reliable?
The price and inventory of DG381ABK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG381ABK is usually 5 days.
3.What payment methods are accepted for DG381ABK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG381ABK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG381ABK?
DG381ABK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG381ABK 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 DG381ABK?
For technical support, including DG381ABK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG381ABK requirements.
6.How does Aetrix verify that DG381ABK is sourced from the original manufacturer or authorized distributors?
All DG381ABK 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 DG381ABK meets industry standards.
7.What is the process for return or replacement of DG381ABK?
All DG381ABK units undergo pre-shipment inspection (PSI). If there is an issue with DG381ABK, 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 DG381ABK part is unused and in its original packaging.
Return procedure for DG381ABK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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