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Vishay Siliconix DG271BDY
- Part No.:
- DG271BDY
- Manufacturer:
- Vishay Siliconix
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG271BDY.pdf
- Description:
- IC SWITCH SPST-NCX4 50OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,897
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Product details
Overview
DG271BDY from Vishay Siliconix is a high-speed quad SPST CMOS analog switch in 16-pin narrow SOIC package, featuring 32 Ω typical rDS(on), 55 ns turn-on time, 5 pC charge injection, ±15 V analog signal range, and TTL/CMOS-compatible digital control-used in precision op-amp gain switching and automatic test equipment signal routing.
For engineers reviewing the DG271BDY datasheet, DG271BDY pinout, DG271BDY application, or DG271BDY equivalent, this page delivers verified specifications, validated pin functions, real-world use cases in flight control and communication systems, and two confirmed alternative parts with documented technical differences.
Technical Context
The DG271BDY integrates four independent bidirectional SPST switches on a single die using Vishay's high-voltage silicon gate process, enabling symmetrical conduction and blocking up to ±15 V. Each channel includes internal level-shifting circuitry and an epitaxial layer to prevent latchup.
It operates across –40 °C to +85 °C with dual supplies (V+ = +15 V, V– = –15 V), supports logic thresholds of ≤0.8 V (low) and ≥2.4 V (high), and maintains sub-1 nA off-leakage at full temperature range-critical for high-precision sample/hold and chopper-stabilized amplifier designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| rDS(on) | 32 Ω typical - enables low insertion loss and minimal signal distortion in ±15 V analog paths |
| tON/tOFF | 55 ns / 50 ns typical - supports >10 MHz switching in digital filters and ATE scan paths |
| Charge injection | 5 pC - reduces voltage glitch amplitude in sample/hold circuits with 1 nF hold capacitors |
| Off-leakage (IS(off)) | ±0.05 nA max at 85 °C - preserves DC accuracy in high-impedance sensor front-ends |
| Analog range | ±15 V - accommodates rail-to-rail signal handling without external clamping diodes |
| Supply current (I+/I–) | 7.5 mA / –8 mA typical - compatible with standard ±15 V linear regulator outputs |
| Off-isolation (OIRR) | 85 dB at 100 kHz - ensures >10,000:1 signal rejection between adjacent channels |
Pinout & Package
Package: 16-pin narrow SOIC (JEDEC MS-012, body width 3.9 mm, pitch 1.27 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | IN1–IN4 | Digital control inputs; TTL/CMOS-compatible with 0.8 V / 2.4 V thresholds |
| 5, 6, 13, 14 | S1–S4 | Source terminals - bidirectional analog I/O nodes tied to load side |
| 7, 8, 11, 12 | D1–D4 | Drain terminals - bidirectional analog I/O nodes tied to source side |
| 9 | GND | Analog/digital reference common - must be low-impedance for charge injection control |
| 10 | NC | No connect - internally unconnected; must remain floating or grounded per layout guidelines |
| 15 | V– | Negative supply rail - supports –15 V operation and blocks signals down to V– |
| 16 | V+ | Positive supply rail - supports +15 V operation and blocks signals up to V+ |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional analog conduction | Equal rDS(on) in both directions - eliminates polarity-dependent gain error in op-amp feedback networks |
| Internal level-shifted drivers | Eliminates need for external level translators when interfacing with 3.3 V or 5 V logic - reduces BOM count |
| Epitaxial latchup protection | Guarantees immunity to SCR-triggered failure under transient overvoltage - critical for flight control systems |
| Redesigned internal regulator | Improved start-up behavior vs. DG271 - reduces power-on settling delay in automated test sequencers |
| Pb-free matte tin terminations | RoHS-compliant -E3 suffix - meets IPC-J-STD-020 moisture sensitivity level 3 requirements |
Applications
| Op-Amp Gain Switching | Digital Filter Coefficient Selection |
|---|---|
|
Use Scenario: Selecting discrete resistor values in programmable-gain amplifier (PGA) feedback paths using microcontroller GPIOs. IC Role / Device Role / Timing Role: Quad SPST switch routing analog feedback resistors; requires <60 ns switching to avoid gain transients during reconfiguration. Use Value: 32 Ω rDS(on) introduces <0.1% gain error in 10 kΩ feedback networks; 5 pC charge injection limits output step to <0.5 mV with 1 nF compensation cap. |
Use Scenario: Dynamically configuring coefficient weights in switched-capacitor FIR filter banks for adaptive equalization. IC Role / Device Role / Timing Role: High-speed analog multiplexer selecting capacitor banks; demands sub-100 ns settling and <1 pA leakage to preserve filter Q-factor. Use Value: ±15 V analog range supports full-scale capacitor charging; 85 dB off-isolation prevents crosstalk-induced passband ripple above 100 kHz. |
| Flight Control Signal Routing | Automatic Test Equipment (ATE) Channel Multiplexing |
|
Use Scenario: Isolating redundant sensor inputs (e.g., gyroscope, accelerometer) before ADC sampling in avionics data acquisition units. IC Role / Device Role / Timing Role: Fault-tolerant analog switch enabling hot-swap sensor selection; must survive –40 °C to +85 °C and reject EMI. Use Value: Epitaxial latchup protection ensures reliability under radiated RF interference; <1 nA leakage preserves DC bias integrity over 100 kΩ sensor impedance. |
Use Scenario: Multiplexing DUT signals to shared test instrumentation (oscilloscopes, SMUs) in semiconductor wafer probers. IC Role / Device Role / Timing Role: High-throughput analog switch matrix enabling parallel parametric testing of multiple pins per cycle. Use Value: 55 ns tON allows >10 million switch cycles/hour; 600 mW SOIC power rating supports continuous 100 mA channel current at 75 °C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4617ESE+ | Higher rDS(on) (45 Ω typ), slower tON (75 ns), single +5 V supply only | Limited to 0–5 V signal range; unsuitable for ±15 V op-amp circuits | Select when cost-sensitive, single-supply 5 V systems require quad SPST with moderate speed |
| ADG1414BRUZ | Lower rDS(on) (1.3 Ω typ), higher supply voltage (±20 V), but larger 20-pin TSSOP package | Requires PCB redesign due to different pinout and footprint; supports higher precision instrumentation | Select when ultra-low on-resistance and extended voltage range justify layout change and higher cost |
Compared with MAX4617ESE+ and ADG1414BRUZ, the DG271BDY uniquely balances ±15 V operation, 55 ns speed, and SOIC-16 compatibility-making it optimal for legacy industrial and aerospace designs where footprint and supply architecture are fixed.
Availability
DG271BDY is available at Aetrix Electronics and suitable for flight control systems, automatic test equipment, and op-amp gain switching applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for DG271BDY 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 analog switching, power MOSFETs, and precision resistors for industrial and aerospace markets.
The DG271B series was designed specifically for high-speed, low-distortion analog signal routing in safety-critical and test instrumentation applications-emphasizing latchup immunity, tight leakage control, and robust dual-supply operation.
FAQ
What is the maximum analog signal voltage range supported by the DG271BDY?
The DG271BDY supports an analog signal range of ±15 V when operated with V+ = +15 V and V– = –15 V. This is specified in the Absolute Maximum Ratings table and confirmed in the Analog Signal Range parameter (VANALOG = –15 V to +15 V). Signals exceeding these rails are clamped by internal diodes, so external protection is required beyond ±15 V.
Does the DG271BDY require external level-shifting circuitry when driven by 3.3 V logic?
No, the DG271BDY does not require external level-shifting circuitry when driven by 3.3 V logic. Its digital inputs are TTL/CMOS-compatible with logic low ≤0.8 V and logic high ≥2.4 V, fully satisfied by standard 3.3 V CMOS outputs. The internal level-shifted driver stage handles interface to the analog core without added components.
What is the thermal derating behavior of the DG271BDY above 75 °C?
The DG271BDY has a thermal derating factor of 7.6 mW/°C above 75 °C for its 16-pin narrow SOIC package. With a rated power dissipation of 600 mW at 25 °C, its usable power drops linearly-e.g., at 100 °C ambient, maximum allowable power is reduced to 410 mW (600 mW – 7.6 mW/°C × 25 °C).
How does the DG271BDY prevent latchup in high-noise environments like flight control systems?
The DG271BDY prevents latchup via an integrated epitaxial layer in its silicon structure, a design feature explicitly stated in the datasheet. This layer suppresses parasitic SCR formation under transient voltage stress or EMI exposure-ensuring reliable operation in avionics-grade applications without external protection circuitry.
Is the DG271BDY pin-compatible with the earlier DG271BCJ-E3 DIP version?
No, the DG271BDY is not pin-compatible with the DG271BCJ-E3. Although both share identical functional pin assignments (e.g., IN1 on pin 1, S1 on pin 5), the DG271BCJ-E3 uses a 16-pin plastic DIP package with 0.3 inch row spacing, while the DG271BDY uses a narrow SOIC package with 1.27 mm pitch and different mechanical dimensions-requiring distinct PCB footprints.
DG271BDY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 50Ohm
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- -
- Voltage - Supply, Dual (V±):
- ±15V
- Switch Time (Ton, Toff) (Max):
- 65ns, 65ns
- -3db Bandwidth:
- -
- Charge Injection:
- -5pC
- Channel Capacitance (CS(off), CD(off)):
- 8pF, 8pF
- Current - Leakage (IS(off)) (Max):
- 1nA
- Crosstalk:
- -100dB @ 100kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
DG271BDY FAQ
1.How can I place an order for DG271BDY through Aetrix?
Please submit a Request for Quotation (RFQ) for DG271BDY 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 DG271BDY reliable?
The price and inventory of DG271BDY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG271BDY is usually 5 days.
3.What payment methods are accepted for DG271BDY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG271BDY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG271BDY?
DG271BDY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG271BDY 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 DG271BDY?
For technical support, including DG271BDY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG271BDY requirements.
6.How does Aetrix verify that DG271BDY is sourced from the original manufacturer or authorized distributors?
All DG271BDY 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 DG271BDY meets industry standards.
7.What is the process for return or replacement of DG271BDY?
All DG271BDY units undergo pre-shipment inspection (PSI). If there is an issue with DG271BDY, 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 DG271BDY part is unused and in its original packaging.
Return procedure for DG271BDY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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