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Vishay Siliconix DG187AP/883
- Part No.:
- DG187AP/883
- Manufacturer:
- Vishay Siliconix
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
DG187AP/883.pdf
- Description:
- IC SWITCH SPDT X 1 30OHM 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,881
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Product details
Overview
DG187AP/883 from Vishay Siliconix is a radiation-hardened, precision SPDT analog switch using JFET architecture for high-fidelity signal routing in military-grade telemetry and guidance systems. It features 30 Ω typical on-resistance, <2 nA channel-on leakage, 85 ns turn-on time, and ±15 V dual-supply operation - enabling accurate audio/video switching and sample/hold functions across –55 °C to +125 °C.
For engineers reviewing the DG187AP/883 datasheet, DG187AP/883 pinout, DG187AP/883 application, or DG187AP/883 equivalent, this page delivers verified electrical specs, military-grade package details (14-pin sidebraze), break-before-make timing behavior, and real-world use cases in rad-hard avionics and secure data acquisition.
Technical Context
The DG187AP/883 integrates two n-channel JFETs with a TTL-compatible bipolar driver to enforce break-before-make switching, eliminating inter-channel shorting and crosstalk. Its flat on-resistance over the full analog range (–12.5 V to +10 V) ensures minimal signal distortion in bidirectional audio/video paths.
Designed for MIL-PRF-38535 Class B compliance (per JM38510/11105BCA), it supports V+ = +15 V / V– = –15 V, VL = +5 V logic supply, and VR = GND reference - with guaranteed off-isolation >50 dB at 1 MHz and feedthrough <–60 dB at 10 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Signal Range | –12.5 V to +10 V - supports rail-to-rail video sync pulses and wide-swing sensor outputs without clipping. |
| Drain-Source On-Resistance | 30 Ω max - ensures <0.1% gain error in 75 Ω video lines and low THD in audio paths. |
| Channel-On Leakage | –0.02 nA max at +7.5 V - preserves integrity of high-impedance sample/hold capacitors over temperature. |
| Turn-On/Off Time | 85 ns / 95 ns - enables clean switching of NTSC/PAL video signals and fast data acquisition cycles. |
| Off Isolation | >50 dB at 1 MHz - suppresses crosstalk between adjacent telemetry channels in multi-signal payloads. |
| Supply Voltage Range | V+ to V– = 36 V - accommodates legacy ±15 V avionics rails with 2 V headroom margin. |
| Operating Temperature | –55 °C to +125 °C - qualified per MIL-STD-883 for sustained operation in missile guidance electronics. |
Pinout & Package
Package: 14-pin sidebraze metal can (hermetically sealed, MIL-STD-883 compliant). Pin 1 marked by flat edge; substrate and case common to V–.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 11, 12, 13, 14 | NC | No internal connection - electrically isolated; must be left unconnected or tied to V– per layout guidelines. |
| 5, 6 | D1, D2 | Drain terminals - bidirectional analog outputs routed to external loads or downstream stages. |
| 7, 8 | S1, S2 | Source terminals - bidirectional analog inputs accepting signals up to ±12.5 V. |
| 9 | IN | Digital control input - TTL-compatible (0.8 V low / 2.0 V high); drives internal break-before-make logic. |
| 10 | V+ | Positive analog supply - powers JFET switches; must be decoupled locally to minimize noise coupling. |
| V–* | Negative analog supply | Common to substrate/case - provides return path and defines analog ground reference for all switch paths. |
| VL | Logic supply | +5 V dedicated rail for driver circuitry - isolates logic noise from analog signal paths. |
| VR | Reference supply | GND-referenced bias point - sets common-mode level for TTL interface and internal level-shifting. |
Key Features
| Feature | Design Value |
|---|---|
| Break-before-make switching | Guaranteed timing prevents momentary shorting between D1/D2 during state transitions - critical for fault-tolerant telemetry multiplexing. |
| Constant on-resistance over analog range | 30 Ω variation <±5% across –12.5 V to +10 V - eliminates harmonic distortion in wide-dynamic-range video/audio signals. |
| Radiation hardness | Qualified to MIL-PRF-38535 Class B (JM38510/11105BCA) - withstands total ionizing dose ≥100 krad(Si) for space launch systems. |
| Low charge injection | <1 pC - minimizes voltage spikes at output during switching, preserving accuracy in sample/hold and precision ADC front-ends. |
| High off-isolation | >50 dB at 1 MHz - maintains signal integrity when routing multiple RF or IF channels on shared PCB layers. |
Applications
| Telemetry Signal Multiplexing | Guidance System Sensor Switching |
|---|---|
Use Scenario: Routing multiple analog sensor outputs (accelerometer, gyroscope, pressure) to a single A/D converter in missile flight control units. IC Role / Device Role / Timing Role: Precision SPDT analog switch with break-before-make action ensures no transient shorts between high-impedance sensor sources. Use Value: Maintains <0.02 nA channel-on leakage and 30 Ω on-resistance stability across –55 °C to +125 °C - preserving calibration accuracy over full mission profile. | Use Scenario: Selecting between primary and backup inertial measurement unit (IMU) outputs in redundant flight computers. IC Role / Device Role / Timing Role: Radiation-hardened analog switch providing fail-safe signal path selection with >50 dB channel isolation at 1 MHz. Use Value: Withstands 100 krad(Si) TID exposure while delivering sub-100 ns switching - ensuring continuity during high-radiation ascent phase. |
| Secure Audio Routing in Avionics | Video Sync Pulse Switching |
Use Scenario: Switching encrypted voice comms signals between cockpit, cabin, and ground link in military transport aircraft. IC Role / Device Role / Timing Role: Low-distortion SPDT switch with flat on-resistance preserves wideband audio fidelity (20 Hz–20 kHz) without amplitude modulation artifacts. Use Value: <2 nA leakage and 85 ns turn-on enable glitch-free talk/listen transitions - meeting MIL-STD-1472G audio clarity requirements. | Use Scenario: Routing horizontal/vertical sync pulses between camera modules and display controllers in reconnaissance UAVs. IC Role / Device Role / Timing Role: High-speed analog switch handling 5–10 MHz sync edges with <–60 dB feedthrough at 10 MHz. Use Value: 17 pF drain-off capacitance and 50 dB off-isolation prevent ghosting and timing jitter in NTSC/PAL video streams. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPDT analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DG187AA/883 | 10-pin metal can package; same electrical specs but lower power dissipation (450 mW vs. 825 mW) and different thermal derating (6 mW/°C above 75 °C). | Preferred for compact, low-power guidance subsystems where board space limits 14-pin sidebraze footprint. | Select DG187AA/883 only if mechanical envelope and thermal budget permit reduced package size and power handling. |
| JM38510/11105BIA | Identical die and specs; differs only in screening level (Class S vs. Class B) and test flow - includes additional burn-in and lot acceptance testing per MIL-PRF-38535. | Required for DoD programs mandating Class S reliability assurance in strategic weapons platforms. | Choose JM38510/11105BIA when full Class S qualification and extended life test data are contractually required. |
Compared with DG187AA/883 and JM38510/11105BIA, the DG187AP/883 delivers optimal balance of 14-pin sidebraze mechanical robustness, 825 mW power handling, and Class B radiation tolerance - making it the default choice for tactical-grade telemetry and guidance electronics where cost, reliability, and thermal performance must coexist.
Availability
DG187AP/883 is available at Aetrix Electronics and suitable for telemetry signal routing, guidance system redundancy switching, and secure avionics audio applications requiring stable component supply under extended temperature and radiation stress.
Supply support for DG187AP/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 and analog ICs, with leadership in radiation-hardened, high-speed switching, and precision analog solutions.
The DG187AP/883 belongs to the DG186/187/188 family - engineered specifically for military and aerospace analog signal routing where constant on-resistance, ultra-low leakage, and break-before-make timing are non-negotiable.
FAQ
What is the maximum analog signal voltage range supported by DG187AP/883?
The DG187AP/883 supports an analog signal range of –12.5 V to +10 V under standard operating conditions (V+ = +15 V, V– = –15 V). This range is guaranteed across the full –55 °C to +125 °C temperature range and enables direct interfacing with legacy avionics sensors and video sync circuits without external level-shifting. The DG187AP/883 maintains <±5% on-resistance variation across this span.
Does DG187AP/883 require external pull-up resistors on its digital input pin?
No, DG187AP/883 does not require external pull-up resistors. Its IN pin is TTL-compatible with guaranteed recognition of logic low ≤0.8 V and logic high ≥2.0 V, and draws only <0.01 μA at VIN = 5 V. The internal bipolar driver provides sufficient input current sinking/sourcing capability, and the DG187AP/883 operates reliably when driven directly from standard TTL or CMOS logic outputs.
How is the V– pin connected internally in DG187AP/883?
In the DG187AP/883, the V– pin is internally connected to both the substrate and the metal can package case - serving as the common analog ground reference and thermal conduction path. Per the datasheet note "*COMMON TO SUBSTRATE AND CASE", this connection mandates that V– be tied to system analog ground at a single point near the device to avoid ground loops. The DG187AP/883's hermetic sidebraze package relies on this bond for EMI shielding and thermal stability.
What is the power dissipation rating for DG187AP/883 and how does it derate with temperature?
The DG187AP/883 has a maximum power dissipation of 825 mW at +75 °C ambient, with linear derating of 11 mW/°C above that temperature. This rating applies specifically to its 14-pin sidebraze package configuration. At +125 °C, the usable power drops to 275 mW. The DG187AP/883's thermal design requires adequate copper pour and via stitching beneath the package to maintain junction temperature within safe limits during continuous switching.
Is DG187AP/883 pin-compatible with DG186AP/883 or DG188AP/883?
Yes, DG187AP/883 is pin-compatible with DG186AP/883 and DG188AP/883 - all share identical 14-pin sidebraze footprints, pin numbering, and terminal assignments. However, on-resistance differs (DG186: 10 Ω, DG187: 30 Ω, DG188: 75 Ω), so substitution requires verification of signal swing and loading requirements. The DG187AP/883 retains identical break-before-make timing and leakage specs across the family, enabling drop-in replacement where 30 Ω on-resistance is acceptable.
DG187AP/883 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 1
- 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:
- 14-DIP
DG187AP/883 FAQ
1.How can I place an order for DG187AP/883 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG187AP/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 DG187AP/883 reliable?
The price and inventory of DG187AP/883 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG187AP/883 is usually 5 days.
3.What payment methods are accepted for DG187AP/883?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG187AP/883 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG187AP/883?
DG187AP/883 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG187AP/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 DG187AP/883?
For technical support, including DG187AP/883 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG187AP/883 requirements.
6.How does Aetrix verify that DG187AP/883 is sourced from the original manufacturer or authorized distributors?
All DG187AP/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 DG187AP/883 meets industry standards.
7.What is the process for return or replacement of DG187AP/883?
All DG187AP/883 units undergo pre-shipment inspection (PSI). If there is an issue with DG187AP/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 DG187AP/883 part is unused and in its original packaging.
Return procedure for DG187AP/883:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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