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Vishay Siliconix DG409LEDY-GE3
- Part No.:
- DG409LEDY-GE3
- Manufacturer:
- Vishay Siliconix
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG409LEDY-GE3.pdf
- Description:
- IC SWITCH SP4T X 2 23OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:901
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Product details
Overview
DG409LEDY-GE3 from Vishay Siliconix is a dual 4-channel differential analog multiplexer designed for precision signal routing in instrumentation and medical systems. It operates on single supplies (3–16 V) or dual supplies (±3 V to ±8 V), features 15 Ω typical on-resistance, 72 ns max enable turn-on time, and break-before-make switching-ideal for high-fidelity data acquisition where channel crosstalk must be minimized.
For engineers reviewing the DG409LEDY-GE3 datasheet, DG409LEDY-GE3 pinout, DG409LEDY-GE3 application, or DG409LEDY-GE3 equivalent, key selection criteria include guaranteed break-before-make timing, -109 dB crosstalk at 100 kHz, ±2.5 kV HBM ESD rating, TTL/CMOS/LV logic compatibility, and SOIC16 package compatibility with legacy DG409 footprints.
Technical Context
The DG409LEDY-GE3 implements two independent 4:1 differential analog multiplexers, each controlled by a 2-bit binary address (A0, A1) and shared enable (EN). Its internal voltage regulator powers logic circuitry, enabling stable operation across supply voltages while minimizing quiescent current (6 μA max).
Switching behavior is defined by guaranteed break-before-make action (tOPEN ≥ 1 ns), low charge injection (−10 pC typ.), and rail-to-rail analog signal handling (±5 V dual, 0–5 V single supply). Off-isolation reaches −87 dB (DG409LE, 100 kHz), with source off-capacitance fixed at 5.5 pF and drain on-capacitance at 23.5 pF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Configuration | Dual 4:1 differential analog multiplexer - routes two independent differential input pairs to common differential outputs |
| On-resistance | 15 Ω typ. at ±5 V dual supply - ensures minimal signal attenuation and gain error in precision measurement paths |
| Switching speed | tON(EN) = 72 ns max - enables fast channel selection in automated test equipment sampling sequences |
| Crosstalk | −109 dB at 100 kHz - prevents interference between active and inactive differential channels in sensitive audio/medical front-ends |
| Supply range | Single: 3–16 V; Dual: ±3 V to ±8 V - supports battery-powered portables and industrial ±5 V rails without level-shifting |
| Logic compatibility | TTL/CMOS/LV (3 V) - interfaces directly with microcontrollers, FPGAs, and ADC drivers without external buffers |
| ESD rating | ±2.5 kV HBM - meets IEC 61000-4-2 Level 2 for robustness in lab and field-deployed instrumentation |
Pinout & Package
Package: 16-pin narrow SOIC (SO-16), JEDEC MS-012 compliant, 6.4 mm × 10.0 mm body, 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 S1a, S2a, S3a, S4a | Differential source inputs (Channel A) | Positive-side analog inputs for four differential pairs; routed to Da when selected |
| 5, 6, 7, 8 S1b, S2b, S3b, S4b | Differential source inputs (Channel B) | Negative-side analog inputs for same four pairs; routed to Db when selected |
| 9, 10 A0, A1 | Binary address inputs | 2-bit select lines determining which of four differential channels connects to output |
| 11 EN | Enable control | Active-high logic input; disables all switches when low, enabling stacking of multiple devices |
| 12 GND | Analog/digital ground reference | Common return for logic and analog sections; must be low-impedance for noise immunity |
| 13, 14 V−, V+ | Analog power rails | Support single-ended (V− = GND) or true dual-supply operation; define full analog signal swing |
| 15, 16 Da, Db | Differential output terminals | Common output pair delivering selected differential signal; matched impedance critical for signal integrity |
Key Features
| Feature | Design Value |
|---|---|
| Break-before-make guarantee | Prevents momentary shorting between adjacent differential channels during switching - essential for avoiding transient glitches in sensor front-ends |
| Internal logic regulator | Reduces total supply current to 6 μA max - extends battery life in portable ECG and glucose monitors |
| Rail-to-rail analog range | Supports full ±5 V or 0–5 V signal swing without clipping - preserves dynamic range in 16-bit data acquisition systems |
| Low leakage | ≤5 nA max off-state leakage over −40 °C to +85 °C - maintains accuracy in high-impedance pH and thermocouple measurement circuits |
| Pin-for-pin compatibility | Direct replacement for DG409 and DG509 - allows drop-in upgrade to lower RDS(on) and improved crosstalk without PCB redesign |
Applications
| Medical Instrumentation | Data Acquisition Systems |
|---|---|
Use Scenario: Multiplexing differential outputs from multiple ECG electrode pairs into a single ADC front-end. IC Role / Device Role / Timing Role: Dual 4:1 differential switch providing isolated, low-crosstalk signal routing under microcontroller address control. Use Value: −109 dB crosstalk prevents interference between lead I/II/III signals; 15 Ω RDS(on) minimizes gain error in biopotential amplification stages. | Use Scenario: Scanning 8-channel thermocouple inputs in industrial process monitoring with cold-junction compensation. IC Role / Device Role / Timing Role: Two synchronized 4:1 differential muxes selecting thermocouple pairs for precision ratiometric measurement. Use Value: Break-before-make timing eliminates transient shorts during channel change; ±2.5 kV HBM withstands factory ESD events. |
| Automatic Test Equipment | Audio Signal Routing |
Use Scenario: Switching calibration reference voltages and DUT signals into a multi-function tester's precision DAC/ADC path. IC Role / Device Role / Timing Role: High-speed differential multiplexer enabling sub-100 ns channel reconfiguration during test sequence execution. Use Value: 72 ns tON(EN) supports >10 kSPS automated calibration cycles; low charge injection (−10 pC) avoids settling errors in 24-bit measurements. | Use Scenario: Routing balanced line-level audio from multiple sources (mic preamps, digital I/O) to a stereo ADC. IC Role / Device Role / Timing Role: Differential analog switch preserving common-mode rejection ratio (CMRR) across selected signal paths. Use Value: Matched 5.5 pF CS(off) minimizes phase skew; −87 dB off-isolation prevents audible crosstalk between guitar and vocal channels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual differential multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG409BRZ | Higher RDS(on) (35 Ω typ. @ ±5 V), slower tON (120 ns), no internal regulator | Requires external logic supply; less suitable for ultra-low-power portable designs | Preferred where cost sensitivity outweighs power/performance needs in non-battery applications |
| MAX4619ESE+ | Single-supply only (2.7–5.5 V), higher leakage (20 nA max), no dual-supply support | Limited to 5 V systems; unsuitable for ±5 V instrumentation or wide-voltage-range industrial use | Valid for compact 3.3 V embedded controllers where dual-rail operation is unnecessary |
Compared with ADG409BRZ and MAX4619ESE+, the DG409LEDY-GE3 delivers superior rail flexibility (3–16 V / ±3–8 V), lower on-resistance, guaranteed break-before-make, and integrated logic regulation-making it the optimal choice for battery-powered medical devices and dual-rail test equipment requiring long-term stability and low glitch energy.
Availability
DG409LEDY-GE3 is available at Aetrix Electronics and suitable for medical instrumentation, automatic test equipment, and portable data acquisition systems requiring stable component supply, RoHS-compliant packaging, and long-lifecycle availability.
Supply support for DG409LEDY-GE3 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 switches, MOSFETs, and precision resistive solutions for demanding industrial and medical applications.
The DG409LEDY-GE3 belongs to Vishay's high-performance analog multiplexer product line, engineered specifically for low-distortion, low-leakage signal routing in precision measurement, healthcare diagnostics, and automated test systems.
FAQ
What is the maximum operating temperature range for the DG409LEDY-GE3?
The DG409LEDY-GE3 is rated for continuous operation from −40 °C to +85 °C, matching the industrial temperature grade (D suffix) specified in its absolute maximum ratings and electrical characteristics tables. This range is validated across all performance parameters including on-resistance, leakage, and switching times, making DG409LEDY-GE3 suitable for deployment in uncontrolled environments such as factory-floor test racks and portable diagnostic devices.
Does the DG409LEDY-GE3 support true dual-supply operation with independent positive and negative rails?
Yes, the DG409LEDY-GE3 supports true dual-supply operation from ±3 V to ±8 V, enabling symmetric analog signal handling (e.g., ±5 V) without grounding the negative rail. The internal architecture isolates logic and analog sections, allowing V− to be driven at −5 V while maintaining TTL-compatible EN/A0/A1 thresholds referenced to GND - a capability confirmed in the "Dual Supply V+ = 5 V, V− = −5 V" specification table.
How does the break-before-make timing of the DG409LEDY-GE3 prevent signal corruption during channel switching?
The DG409LEDY-GE3 guarantees break-before-make action with tOPEN ≥ 1 ns (measured at room temperature), ensuring that the previously selected differential channel fully disconnects before the next channel closes. This eliminates momentary shorts between source pairs - critical in high-gain sensor interfaces where even nanosecond overlap could inject large transient currents into low-noise amplifiers, as documented in Figure 4 and the Dynamic Characteristics table.
Can the DG409LEDY-GE3 be used with 3 V logic while operating on a 12 V analog supply?
Yes, the DG409LEDY-GE3 accepts 3 V logic levels (VINL ≤ 0.6 V, VINH ≥ 2.4 V) independently of analog supply voltage, verified across all tested conditions including V+ = 12 V / V− = 0 V. Its internal regulator powers the logic interface separately, so 3 V microcontroller GPIOs can directly drive EN, A0, and A1 without level shifters - a feature explicitly listed under "TTL, CMOS, LV logic (3 V) compatible" in the datasheet.
What is the significance of the "-GE3" suffix in DG409LEDY-GE3?
Per Vishay's ordering documentation, the "-GE3" suffix indicates a lead (Pb)-free, RoHS-compliant finish on the SOIC16 package, with standard tin-based termination meeting JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) requirements. This distinguishes DG409LEDY-GE3 from non-RoHS variants (e.g., DG409LEDY) and confirms compliance with EU Directive 2011/65/EU and China RoHS II, as stated in the "Note" section of the ordering information table.
DG409LEDY-GE3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- SP4T
- Multiplexer/Demultiplexer Circuit:
- 4:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 23Ohm
- Channel-to-Channel Matching (ΔRon):
- 1Ohm
- Voltage - Supply, Single (V+):
- 3V ~ 16V
- Voltage - Supply, Dual (V±):
- ±3.3V ~ 8V
- Switch Time (Ton, Toff) (Max):
- 72ns, 47ns
- -3db Bandwidth:
- -
- Charge Injection:
- -10pC
- Channel Capacitance (CS(off), CD(off)):
- 5.5pF, 13.5pF
- Current - Leakage (IS(off)) (Max):
- 1nA
- Crosstalk:
- -109dB @ 100kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
DG409LEDY-GE3 FAQ
1.How can I place an order for DG409LEDY-GE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG409LEDY-GE3 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 DG409LEDY-GE3 reliable?
The price and inventory of DG409LEDY-GE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG409LEDY-GE3 is usually 5 days.
3.What payment methods are accepted for DG409LEDY-GE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG409LEDY-GE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG409LEDY-GE3?
DG409LEDY-GE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG409LEDY-GE3 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 DG409LEDY-GE3?
For technical support, including DG409LEDY-GE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG409LEDY-GE3 requirements.
6.How does Aetrix verify that DG409LEDY-GE3 is sourced from the original manufacturer or authorized distributors?
All DG409LEDY-GE3 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 DG409LEDY-GE3 meets industry standards.
7.What is the process for return or replacement of DG409LEDY-GE3?
All DG409LEDY-GE3 units undergo pre-shipment inspection (PSI). If there is an issue with DG409LEDY-GE3, 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 DG409LEDY-GE3 part is unused and in its original packaging.
Return procedure for DG409LEDY-GE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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