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Vishay Siliconix DG308BDQ-E3
- Part No.:
- DG308BDQ-E3
- Manufacturer:
- Vishay Siliconix
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
DG308BDQ-E3.pdf
- Description:
- IC SW SPST-NOX4 85OHM 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,806
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Product details
Overview
DG308BDQ-E3 from Vishay Siliconix is a quad single-pole single-throw (SPST) normally open analog switch IC designed for precision signal routing in bipolar ±15 V systems. It features 45 Ω typical on-resistance, 20 pA maximum off-leakage, <200 ns turn-on time, ±22 V supply rating, and 1 pC charge injection - enabling high-fidelity switching in sample-and-hold, instrumentation, and test equipment.
For engineers reviewing the DG308BDQ-E3 datasheet, DG308BDQ-E3 pinout, DG308BDQ-E3 application, or DG308BDQ-E3 equivalent, key selection criteria include guaranteed bi-directional analog signal handling up to ±15 V, TSSOP-16 package compatibility with space-constrained PCB layouts, low glitching performance critical for precision amplifiers, and verified operation across –40 °C to +85 °C industrial temperature range.
Technical Context
The DG308BDQ-E3 implements four independent CMOS transmission gates with integrated level-shift circuitry to ensure proper logic interface at TTL-compatible thresholds (VINH ≥ 11 V, VINL ≤ 3.5 V) under dual-supply operation. Each channel supports true bi-directional conduction when on and blocks signals beyond supply rails when off.
Its proprietary silicon gate CMOS process delivers improved RDS(on) matching (≤2 %), low temperature drift of on-resistance, and epitaxial latch-up protection. Charge injection compensation minimizes transients during switching, supporting accurate sampling in precision analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Signal Range | ±15 V - supports full-rail bipolar signal routing without clipping in ±15 V op-amp systems |
| RDS(on) | 45 Ω typ. - ensures minimal gain error and insertion loss in precision amplifier gain-switching networks |
| Charge Injection | 1 pC - limits voltage step error in sample-and-hold circuits with 1 nF hold capacitors to <1 mV |
| tON/tOFF | <200 ns / <150 ns - enables sub-microsecond multiplexing in high-speed data acquisition |
| ID(off) | ±20 pA max. - maintains >100 MΩ effective off-isolation for low-drift DC-coupled paths |
| Supply Range | ±4 V to ±22 V - allows flexible biasing in legacy ±12 V or modern ±15 V industrial power domains |
| OIRR | 90 dB @ 100 kHz - suppresses crosstalk between adjacent channels in multi-channel sensor interfaces |
Pinout & Package
TSSOP-16 package: 5.0 mm × 6.4 mm body, 0.65 mm pitch, 1.2 mm max height, RoHS-compliant matte tin terminations.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | Digital Input (IN1–IN4) | Active-high TTL-compatible control lines; drive internal level shifters to enable corresponding switches |
| 5, 7, 10, 12 | Source (S1–S4) | Input-side terminals of SPST switches; bi-directional analog path entry points |
| 6, 8, 11, 13 | Drain (D1–D4) | Output-side terminals of SPST switches; bi-directional analog path exit points |
| 9 | GND | Digital ground reference for logic inputs; isolated from analog signal paths |
| 14 | V− | Negative analog supply rail; must be connected for bipolar operation and leakage control |
| 15 | V+ | Positive analog supply rail; sets upper analog signal limit and powers internal CMOS core |
| 16 | NC | No connect - internally unconnected; must remain floating or grounded per layout best practice |
Key Features
| Feature | Design Value |
|---|---|
| True Bi-Directional Switching | Enables signal routing from drain-to-source or source-to-drain without polarity constraints in AC-coupled or differential paths |
| Epitaxial Latch-Up Protection | Guarantees immunity to destructive latch-up under overvoltage transients up to ±22 V on any terminal |
| Low Glitch Energy (1 pC) | Reduces aperture uncertainty in sample-and-hold stages, preserving DC accuracy in 16-bit data acquisition |
| Extended Temperature Operation | Validated performance from –40 °C to +85 °C supports deployment in industrial PLCs and outdoor test gear |
| Single-Supply Capability | Operates from +4 V to +44 V with V− tied to GND - simplifies power design in battery-powered portable instruments |
Applications
| Industrial Instrumentation | Test Equipment |
|---|---|
Use Scenario: Multiplexing multiple sensor inputs (thermocouples, strain gauges) into a shared precision ADC front-end. IC Role / Device Role / Timing Role: Quad SPST switch routing analog signals while maintaining offset stability and minimizing channel crosstalk. Use Value: 90 dB off-isolation and 2 % RDS(on) matching preserve measurement linearity across all four channels. | Use Scenario: Configurable gain selection in automated calibration fixtures using relay-replacement switching. IC Role / Device Role / Timing Role: Digitally controlled analog switch enabling fast, repeatable resistor network reconfiguration. Use Value: 45 Ω on-resistance and <200 ns switching ensure minimal gain error and timing jitter during test sequence execution. |
| Sample-and-Hold Circuits | Communications Systems |
Use Scenario: Acquiring analog waveforms in high-resolution oscilloscopes and spectrum analyzers. IC Role / Device Role / Timing Role: Low-charge-injection switch controlling hold capacitor connection during sampling aperture. Use Value: 1 pC charge injection limits hold-step error to <1 mV with 1 nF hold capacitors, supporting 16-bit ENOB. | Use Scenario: Signal path selection in RF front-end test adapters and baseband filter banks. IC Role / Device Role / Timing Role: Analog multiplexer isolating receive/transmit paths and selecting calibration loops. Use Value: ±22 V rating accommodates transient-tolerant designs; 5 pF off-capacitance minimizes signal distortion at 100 kHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4617ESE+ | Lower RDS(on) (35 Ω), but only ±15 V rated; no TSSOP-16 option - offered in SOIC-16 only | Optimized for lower-voltage, higher-speed digital test systems; lacks extended ±22 V robustness | Select when prioritizing on-resistance over supply voltage margin and board space is less constrained |
| ADG1404BRUZ | Higher supply rating (±25 V), but larger 20-lead TSSOP; 4.5 Ω RDS(on), higher cost, and 3.3 V/5 V logic only | Better suited for ultra-low-distortion audio routing or high-precision medical DAQ requiring sub-5 Ω on-resistance | Choose when system requires <5 Ω on-resistance and can accommodate larger footprint and tighter logic-level constraints |
Compared with MAX4617ESE+ and ADG1404BRUZ, DG308BDQ-E3 provides optimal balance of ±22 V ruggedness, TSSOP-16 compactness, and 45 Ω on-resistance - making it preferred for industrial instrumentation where supply margin, PCB area, and cost are co-constrained.
Availability
DG308BDQ-E3 is available at Aetrix Electronics and suitable for industrial instrumentation, test equipment, and communications systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for DG308BDQ-E3 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 semiconductor manufacturer specializing in discrete components and analog ICs, with emphasis on reliability, precision, and high-voltage performance.
The DG308B series belongs to Vishay's precision analog switch product line, engineered for industrial-grade signal integrity in harsh environments - targeting applications demanding wide supply range, low leakage, and guaranteed bi-directional operation.
FAQ
What is the maximum analog signal voltage supported by DG308BDQ-E3?
DG308BDQ-E3 supports analog signals from V− to V+, with absolute maximum ratings allowing input signals up to ±22 V relative to ground. Under standard ±15 V dual-supply operation, the guaranteed analog signal range is ±15 V - sufficient for most industrial op-amp and data acquisition systems. Exceeding V+ or V− clamps signals via internal diodes, so external limiting is recommended for transient protection.
Does DG308BDQ-E3 require both positive and negative supplies to operate?
DG308BDQ-E3 supports both dual-supply (±V) and single-supply (V+ to GND) configurations. In dual-supply mode, V+ and V− must be connected to establish the analog signal range. In single-supply mode, V− is tied to GND and V+ ranges from +4 V to +44 V - enabling use in portable or battery-powered systems without negative rails.
How does the charge injection specification of DG308BDQ-E3 impact sample-and-hold accuracy?
DG308BDQ-E3 specifies 1 pC typical charge injection, which directly determines the voltage step error on the hold capacitor: ΔV = Q/CHOLD. With a 1 nF hold capacitor, this yields <1 mV error - supporting 12-bit to 16-bit resolution in precision sample-and-hold circuits. The improved compensation design minimizes aperture uncertainty versus earlier DG308A versions.
Is DG308BDQ-E3 pin-compatible with the legacy DG308A or DG308ADJ?
Yes, DG308BDQ-E3 is functionally and pin-compatible with DG308A and DG308ADJ in TSSOP-16, SOIC-16, and PDIP-16 packages. The "B" revision improves RDS(on), leakage, speed, and charge injection while retaining identical pinout, truth table, and logic thresholds - enabling drop-in replacement in existing designs without layout changes.
What is the thermal derating behavior of DG308BDQ-E3 above 75 °C?
DG308BDQ-E3 has a thermal derating factor of 12 mW/°C above 75 °C for the TSSOP-16 package. Its maximum power dissipation is 640 mW at 75 °C ambient, decreasing linearly to ~520 mW at 85 °C. This reflects the package's 125 °C storage limit and ensures reliable operation within its –40 °C to +85 °C specified operating range.
DG308BDQ-E3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Last Time Buy
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 85Ohm
- Channel-to-Channel Matching (ΔRon):
- 1.7Ohm
- Voltage - Supply, Single (V+):
- 4V ~ 44V
- Voltage - Supply, Dual (V±):
- ±4V ~ 22V
- Switch Time (Ton, Toff) (Max):
- 200ns, 150ns
- -3db Bandwidth:
- -
- Charge Injection:
- 1pC
- Channel Capacitance (CS(off), CD(off)):
- 5pF, 5pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -95dB @ 100kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
DG308BDQ-E3 FAQ
1.How can I place an order for DG308BDQ-E3 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG308BDQ-E3 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 DG308BDQ-E3 reliable?
The price and inventory of DG308BDQ-E3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG308BDQ-E3 is usually 5 days.
3.What payment methods are accepted for DG308BDQ-E3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG308BDQ-E3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG308BDQ-E3?
DG308BDQ-E3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG308BDQ-E3 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 DG308BDQ-E3?
For technical support, including DG308BDQ-E3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG308BDQ-E3 requirements.
6.How does Aetrix verify that DG308BDQ-E3 is sourced from the original manufacturer or authorized distributors?
All DG308BDQ-E3 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 DG308BDQ-E3 meets industry standards.
7.What is the process for return or replacement of DG308BDQ-E3?
All DG308BDQ-E3 units undergo pre-shipment inspection (PSI). If there is an issue with DG308BDQ-E3, 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 DG308BDQ-E3 part is unused and in its original packaging.
Return procedure for DG308BDQ-E3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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