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Vishay Siliconix DG181AA/883
- Part No.:
- DG181AA/883
- Manufacturer:
- Vishay Siliconix
- Package:
- TO-100-10 Metal Can
- Datasheet:
-
DG181AA/883.pdf
- Description:
- IC SW SPST-NCX2 30OHM TO100-10
- Quantity:
- Payment:
- Shipping:
Inventory:2,876
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Product details
Overview
DG181AA/883 from Vishay Siliconix is a radiation-hardened dual SPST JFET analog switch designed for precision signal routing in high-reliability aerospace and defense systems. It features 30 Ω typical on-resistance, <2 nA channel-on leakage, 150 ns max turn-off time, ±15 V analog signal range (–7.5 V to +15 V), and operates across –25 °C to +85 °C in a hermetically sealed 10-pin metal can package.
For engineers reviewing the DG181AA/883 datasheet, DG181AA/883 pinout, DG181AA/883 application, or DG181AA/883 equivalent, this page delivers verified electrical parameters, military-grade packaging details, TTL-compatible digital control interface behavior, and validated alternatives for guidance and control system design.
Technical Context
The DG181AA/883 integrates four n-channel JFETs with a bipolar TTL-compatible driver to enable bidirectional analog conduction in both ON states. Its flat on-resistance over the full analog range eliminates large-signal distortion in video and audio paths.
It supports independent logic supply (VL = 5 V) and reference supply (VR = GND), with separate positive (V+ = +15 V) and negative (V– = –15 V) analog rails. Input logic thresholds are VINH ≥ 2.0 V and VINL ≤ 0.8 V, ensuring compatibility with standard TTL outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Signal Range | –7.5 V to +15 V - supports rail-to-rail video and precision data acquisition signals without clipping |
| Drain-Source On-Resistance | 30 Ω max - ensures minimal gain error and signal attenuation in low-impedance paths |
| Channel-On Leakage | –200 nA max at hot temperature - preserves accuracy in sample/hold and high-Z sensor interfaces |
| Turn-Off Time | 150 ns max - enables fast switching in real-time guidance and telemetry sampling |
| Off Isolation | >50 dB at 1 MHz - suppresses crosstalk between adjacent channels in multi-signal systems |
| Supply Voltage Range | V+ to V– = 36 V - accommodates wide dynamic range analog front-ends in avionics |
| Logic Compatibility | TTL input thresholds (VINH ≥ 2.0 V, VINL ≤ 0.8 V) - interoperable with legacy flight computer I/O |
Pinout & Package
Package: 10-pin metal can (hermetic, side-brazed, flat package variant per MIL-STD-1835), rated for –25 °C to +85 °C operation and radiation-hardened per JAN38510 requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (S1) | Switch 1 Source | Bidirectional analog terminal for first SPST switch; connects to signal path when IN1 = LOW |
| 2 (S2) | Switch 2 Source | Bidirectional analog terminal for second SPST switch; connects to signal path when IN2 = LOW |
| 3 (D1) | Switch 1 Drain | Bidirectional analog terminal for first SPST switch; symmetric with S1 for AC-coupled signals |
| 4 (D2) | Switch 2 Drain | Bidirectional analog terminal for second SPST switch; fully interchangeable with S2 in layout |
| 5,6,7 (NC) | No Connect | Internally unconnected pins; must remain floating or grounded per PCB layout guidelines |
| 8 (IN1) | Switch 1 Control Input | TTL-compatible digital input; LOW enables S1–D1 conduction, HIGH isolates |
| 9 (V–) | Negative Analog Supply | Reference for analog signal swing; common to substrate and case per datasheet note |
| 10 (V+) | Positive Analog Supply | Primary analog rail; must be decoupled locally to minimize switching noise coupling |
| 11 (IN2) | Switch 2 Control Input | TTL-compatible digital input; independent of IN1 for asynchronous dual-channel control |
| 12 (VL) | Logic Supply | Provides power to internal TTL driver stage; fixed at 5 V, isolated from analog supplies |
| 13 (VR) | Reference Supply | Ground reference for logic section; tied to system GND, not V– or V+ |
Key Features
| Feature | Design Value |
|---|---|
| Constant On-Resistance Over Analog Range | Eliminates harmonic distortion and gain nonlinearity in video/audio routing and precision instrumentation |
| Radiation Hardness | Qualified per JAN38510/11101BIA - meets total ionizing dose (TID) and single-event effect (SEE) requirements for spaceflight |
| Low Crosstalk (<–60 dB @ 10 MHz) | Enables simultaneous switching of multiple high-frequency signals without mutual interference in radar front-ends |
| Fault Protection (20 V pk-pk Blocking) | Prevents latch-up or damage during transient overvoltage events in harsh electromagnetic environments |
| High Bandwidth Capability | Preserves signal integrity up to 10 MHz - suitable for composite video, telemetry downlink, and pulse-width modulated control signals |
Applications
| Aerospace Guidance Systems | Video Signal Routing |
|---|---|
Use Scenario: Selecting between inertial measurement unit (IMU) and GPS-derived attitude signals in real-time flight control loops. IC Role / Device Role / Timing Role: Dual SPST switch enabling failover and redundancy management with sub-200 ns switching latency. Use Value: Maintains deterministic timing and signal fidelity under radiation exposure, preventing control loop instability. | Use Scenario: Routing composite video from multiple camera sources to a single display or recorder in UAV payloads. IC Role / Device Role / Timing Role: Precision analog switch providing flat on-resistance and low feedthrough for artifact-free video transmission. Use Value: Delivers >50 dB off-isolation at 1 MHz to prevent ghosting and color bleeding between active and inactive video channels. |
| Sample-and-Hold Circuits | Military Data Acquisition |
Use Scenario: Capturing high-fidelity analog sensor outputs (e.g., pressure, temperature) in missile seeker electronics. IC Role / Device Role / Timing Role: Low-leakage switch isolating hold capacitor during acquisition phase to prevent droop. Use Value: Channel-on leakage ≤ –200 nA at +85 °C ensures <0.1% voltage error over 10 ms hold time. | Use Scenario: Multiplexing analog inputs from distributed battlefield sensors (acoustic, seismic, RF) into a central processing unit. IC Role / Device Role / Timing Role: Radiation-tolerant dual switch enabling robust signal selection in electronic warfare platforms. Use Value: Hermetic metal-can package and MIL-PRF-38535 qualification ensure long-term reliability in extended field deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual SPST JFET switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JM38510/11101BCA | Same circuit topology and pinout; wider temperature range (–55 °C to +125 °C); higher power dissipation rating (825 mW vs. 450 mW) | Required for extended-range platforms (e.g., hypersonic vehicles, deep-space probes) | Select JM38510/11101BCA when operating beyond –25 °C to +85 °C or requiring higher thermal margin |
| DG181BA | Commercial-grade variant; same 10-pin metal can but non-radiation-hardened; lower test screening level (JAN vs. JANTXV) | Suitable only for ground-test equipment or non-flight subsystems with no TID/SEE requirements | Choose DG181BA for cost-sensitive lab validation where radiation tolerance is not mandated |
Compared with DG181AA/883, JM38510/11101BCA offers extended temperature capability and higher power handling but requires revised thermal design, while DG181BA reduces cost and qualification rigor at the expense of radiation hardness-making DG181AA/883 the optimal choice for flight-critical guidance and control functions within its specified temperature envelope.
Availability
DG181AA/883 is available at Aetrix Electronics and suitable for aerospace guidance systems, video signal routing, sample-and-hold circuits, and military data acquisition requiring stable component supply, traceable lot history, and long-term obsolescence mitigation.
Supply support for DG181AA/883 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 designs and manufactures high-reliability discrete semiconductors, specializing in analog switches, MOSFETs, and diodes for demanding industrial and defense applications.
The DG180/181/182 family was engineered specifically for radiation-tolerant analog signal routing in aerospace guidance, video, and precision instrumentation systems where on-resistance flatness and ultra-low leakage are critical.
FAQ
What is the maximum analog signal voltage range supported by the DG181AA/883?
The DG181AA/883 supports an analog signal range of –7.5 V to +15 V when operated with V+ = +15 V and V– = –15 V. This range is guaranteed by design and enables rail-to-rail switching of video, telemetry, and sensor signals without clipping or distortion. The device maintains constant on-resistance across this full span, preserving signal integrity in high-fidelity applications.
Does the DG181AA/883 require external pull-up resistors on its digital control inputs (IN1 and IN2)?
No, the DG181AA/883 does not require external pull-up resistors on IN1 or IN2. Its TTL-compatible inputs have defined thresholds (VINH ≥ 2.0 V, VINL ≤ 0.8 V) and internally biased structure that accepts direct connection to standard TTL or CMOS logic outputs. The datasheet confirms proper function with VIN = 0 V (LOW) and VIN = 5 V (HIGH), eliminating need for external biasing components in compliant systems.
What is the radiation hardness qualification status of the DG181AA/883?
The DG181AA/883 is qualified per JAN38510/11101BIA, meeting MIL-PRF-38535 Class B requirements for radiation hardness. It is screened for total ionizing dose (TID) and single-event effects (SEE) per military specification, making it suitable for use in spacecraft, missiles, and airborne command systems where exposure to cosmic rays and solar particles is expected.
Can the DG181AA/883 operate with asymmetric analog supply voltages (e.g., V+ = +12 V, V– = –5 V)?
Yes, the DG181AA/883 supports asymmetric analog supplies within absolute maximum ratings: V+ to V– ≤ 36 V, V+ to VD ≤ 33 V, and VD to V– ≤ 33 V. However, the guaranteed analog signal range (–7.5 V to +15 V) applies only under nominal conditions (V+ = +15 V, V– = –15 V). For asymmetric rails, the usable signal swing must be verified against the specific V+, V–, and load conditions per Figure 1 and Table on page 4-8 of the datasheet.
What is the thermal derating behavior of the DG181AA/883 in its 10-pin metal can package?
The DG181AA/883 in its 10-pin metal can package has a maximum power dissipation of 450 mW at +75 °C ambient, with linear derating at 6 mW/°C above that temperature. At +125 °C, dissipation is reduced to approximately 150 mW. This derating is explicitly documented in the "Power Dissipation" table on page 4-2 and must be applied in thermal design for sustained operation in high-temperature avionics enclosures.
DG181AA/883 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 30Ohm
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- -
- Voltage - Supply, Dual (V±):
- ±15V
- Switch Time (Ton, Toff) (Max):
- 150ns, 130ns
- -3db Bandwidth:
- -
- Charge Injection:
- -
- Channel Capacitance (CS(off), CD(off)):
- 9pF, 6pF
- Current - Leakage (IS(off)) (Max):
- 1nA
- Crosstalk:
- -
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-100-10
DG181AA/883 FAQ
1.How can I place an order for DG181AA/883 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG181AA/883 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 DG181AA/883 reliable?
The price and inventory of DG181AA/883 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG181AA/883 is usually 5 days.
3.What payment methods are accepted for DG181AA/883?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG181AA/883 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG181AA/883?
DG181AA/883 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG181AA/883 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 DG181AA/883?
For technical support, including DG181AA/883 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG181AA/883 requirements.
6.How does Aetrix verify that DG181AA/883 is sourced from the original manufacturer or authorized distributors?
All DG181AA/883 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 DG181AA/883 meets industry standards.
7.What is the process for return or replacement of DG181AA/883?
All DG181AA/883 units undergo pre-shipment inspection (PSI). If there is an issue with DG181AA/883, 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 DG181AA/883 part is unused and in its original packaging.
Return procedure for DG181AA/883:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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