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Vishay Siliconix DG333ALDQ-T1-E3
- Part No.:
- DG333ALDQ-T1-E3
- Manufacturer:
- Vishay Siliconix
- Package:
- -
- Datasheet:
-
DG333ALDQ-T1-E3.pdf
- Description:
- IC SWITCH SPDT X 4 45OHM 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,996
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Product details
Overview
DG333ALDQ-T1-E3 from Vishay Siliconix is a precision quad SPDT analog switch IC designed for high-accuracy signal routing in instrumentation and portable systems. It features 25 Ω typical on-resistance, <1 μA supply current, ±22 V dual-supply operation, and 175 ns turn-on time. Used in battery-powered test equipment where low leakage (0.25 nA max) and micro-power operation are critical.
For engineers reviewing the DG333ALDQ-T1-E3 datasheet, DG333ALDQ-T1-E3 pinout, DG333ALDQ-T1-E3 application, or DG333ALDQ-T1-E3 equivalent, key selection criteria include rail-to-rail analog range, break-before-make timing, channel-to-channel on-resistance matching (<2 Ω), charge injection (≤10 pC), and TSSOP-20 package compatibility with space-constrained PCB layouts.
Technical Context
The DG333ALDQ-T1-E3 integrates four independent SPDT switches fabricated in Vishay's HVSG-2 CMOS process, enabling bipolar (±22 V) or single-supply (5–40 V) operation with rail-to-rail analog signal handling. Each switch exhibits bidirectional conduction, latchup immunity via epitaxial isolation, and TTL/CMOS-compatible digital control inputs.
Its micro-power architecture (1 μA typical I+ at VL = 5 V) targets portable instrumentation, while improved charge injection compensation minimizes switching transients in switched-capacitor networks. Break-before-make action (5 ns min delay) prevents momentary shorting during state transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-resistance | 25 Ω typ. - ensures minimal signal attenuation and gain error in precision measurement paths |
| Supply voltage range | ±4 V to ±22 V dual or 5 V to 40 V single - supports wide-range industrial and medical sensor interfaces |
| Leakage current | 0.25 nA max at 85 °C - preserves accuracy in high-impedance sampling circuits and battery-monitoring nodes |
| Switching time | 175 ns turn-on / 145 ns turn-off - enables >1 MHz clock rates in switched-capacitor filters |
| Charge injection | 10 pC max - limits voltage glitch on sampled capacitors, critical for ADC front-end integrity |
| Off-isolation | 72 dB at 1 MHz - suppresses crosstalk between adjacent channels in multi-signal routing |
| Logic compatibility | TTL/CMOS - simplifies interface with FPGA, MCU, or ASIC control without level-shifting circuitry |
Pinout & Package
Package: 20-pin TSSOP (4.4 mm × 6.5 mm, 0.65 mm pitch), RoHS-compliant, surface-mountable with standard reflow profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | Switch source terminals (S1–S8) | Eight analog source connections - four SPDT switches, each with two sources (S1/S2, S3/S4, etc.) |
| 9, 10, 11, 12 | Digital control inputs (IN1–IN4) | Independent logic inputs controlling respective SPDT switches; "1" connects source to D1, "0" to D2 |
| 13, 14, 15, 16, 17, 18, 19, 20 | Switch drain terminals (D1–D4, D1–D4 repeated) | Eight analog drain connections - each SPDT has two drains (D1/D2 per switch); pin 15 is NC on DG333A only (DG333AL uses all pins) |
| V+, V− | Analog power rails | Support ±22 V operation; define full analog signal swing from V− to V+ |
| GND | Digital ground reference | Reference for logic inputs; isolated from analog supplies to minimize noise coupling |
| VL (Pin 15) | Logic supply (DG333AL only) | Enables independent 5 V logic supply for ultra-low-power operation; not connected on DG333A |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal range | Operates with signals from V− to V+ - eliminates level-shifting in ±15 V op-amp or sensor interfaces |
| Break-before-make switching | 5 ns minimum delay - prevents transient short-circuits during channel reconfiguration in multiplexed data acquisition |
| On-resistance matching | <2 Ω max mismatch between channels - ensures consistent gain and offset across multi-channel signal paths |
| Micro-power operation | <1 μW typical power (DG333AL) - extends battery life in handheld meters and portable diagnostic tools |
| ESD tolerance | >2 kV HBM - improves robustness during board assembly and field handling in industrial environments |
Applications
| Audio Signal Routing | Portable Test Equipment |
|---|---|
|
Use Scenario: Selecting between microphone inputs or headphone outputs in battery-powered audio analyzers. IC Role / Device Role / Timing Role: Quad SPDT analog switch providing low-distortion, low-noise signal path selection with rail-to-rail capability. Use Value: 25 Ω on-resistance and 80 dB crosstalk minimize inter-channel interference and preserve SNR in audio band. |
Use Scenario: Multiplexing sensor inputs (thermocouple, RTD, strain gauge) into a shared ADC in handheld calibrators. IC Role / Device Role / Timing Role: Precision analog switch enabling sequential sampling with sub-nA leakage and minimal charge injection. Use Value: 0.25 nA max off-leakage and 10 pC charge injection prevent DC offset drift and settling errors in high-resolution measurements. |
| Switched-Capacitor Filters | Battery-Powered Medical Devices |
|
Use Scenario: Implementing programmable band-pass filtering in portable ECG front-ends using capacitor-switching topology. IC Role / Device Role / Timing Role: High-speed analog switch driving clocked capacitor networks with precise timing control. Use Value: 175 ns turn-on time supports filter clock frequencies up to 1.2 MHz, enabling higher cutoff frequencies in compact designs. |
Use Scenario: Isolating patient-connected electrodes from internal circuitry during standby mode in wearable vital sign monitors. IC Role / Device Role / Timing Role: Low-power analog switch providing safe, galvanically isolated signal path control under microcontroller supervision. Use Value: <1 μA supply current and ±22 V rating allow direct interfacing with isolated amplifiers while minimizing quiescent power draw. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad SPDT analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4617ESE+ | Higher on-resistance (45 Ω typ.), 3.3 V–16 V supply, SOIC-16 package | Limited to lower-voltage systems; lacks ±22 V capability and micro-power VL pin | Choose when cost-sensitive, single-supply 5 V systems require proven reliability over extended temperature range |
| ADG1434BRUZ | Lower on-resistance (1.3 Ω typ.), 12 V max dual supply, TSSOP-20, but 1.2 mA supply current | Superior precision but incompatible with battery operation due to 1000× higher quiescent current | Prefer for lab-grade instrumentation requiring ultra-low RDS(on), where power budget allows |
Compared with MAX4617ESE+ and ADG1434BRUZ, the DG333ALDQ-T1-E3 uniquely balances ±22 V signal handling, micro-power consumption (<1 μA), and TSSOP-20 footprint-making it optimal for portable, wide-dynamic-range analog multiplexing where both voltage range and battery life are constrained.
Availability
DG333ALDQ-T1-E3 is available at Aetrix Electronics and suitable for portable instrumentation, battery-powered medical devices, and automated test equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for DG333ALDQ-T1-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 leader in discrete semiconductors and passive components, specializing in high-reliability analog solutions for industrial, automotive, and medical markets.
The DG333AL series belongs to Vishay's precision analog switch product line, engineered specifically for low-leakage, low-distortion signal routing in portable and high-accuracy measurement systems.
FAQ
What is the maximum analog signal voltage range supported by the DG333ALDQ-T1-E3?
The DG333ALDQ-T1-E3 supports analog signals from V− to V+, with absolute maximum ratings of ±22 V dual supply or 5 V to 40 V single supply. Signals exceeding these rails are clamped by internal diodes; forward current must be limited to rated values per datasheet note. This range enables direct interfacing with ±15 V op-amps and industrial sensors without external protection.
Does the DG333ALDQ-T1-E3 require separate logic and analog supplies?
Yes - the DG333ALDQ-T1-E3 includes a dedicated VL pin (Pin 15) for independent logic supply, allowing 5 V logic operation while analog rails run at ±15 V. This separation reduces digital noise coupling into sensitive analog paths. The standard DG333A omits VL; DG333ALDQ-T1-E3 implements it fully, supporting true dual-supply independence.
How does the break-before-make timing work in the DG333ALDQ-T1-E3?
The DG333ALDQ-T1-E3 guarantees a minimum 5 ns break-before-make delay (tD) between opening one path and closing the alternate path within each SPDT switch. This prevents momentary shorts during state transitions - critical in multiplexed sensor arrays or relay-replacement circuits where cross-conduction could damage downstream circuitry or corrupt measurements.
Can the DG333ALDQ-T1-E3 operate from a single 5 V supply?
Yes - the DG333ALDQ-T1-E3 supports unipolar operation from 5 V to 40 V. At V+ = 5 V, V− = 0 V, it delivers 35 Ω typical on-resistance and 90 ns turn-on time. Analog signal range spans 0 V to 5 V, making it suitable for low-voltage microcontroller-peripheral interfacing, though bipolar performance (e.g., ±15 V) requires dual-rail configuration.
What is the thermal derating behavior of the DG333ALDQ-T1-E3 above 75 °C?
For the DG333ALDQ-T1-E3 in TSSOP-20 package, power dissipation must be derated by 10 mW/°C above +75 °C ambient. At 125 °C junction temperature, maximum allowable power drops to ~300 mW (vs. 800 mW at 25 °C). Layouts must ensure adequate copper area and airflow to maintain junction temperature within limits during continuous 30 mA channel current operation.
DG333ALDQ-T1-E3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 45Ohm
- Channel-to-Channel Matching (ΔRon):
- 2Ohm (Max)
- Voltage - Supply, Single (V+):
- 5V ~ 40V
- Voltage - Supply, Dual (V±):
- ±4V ~ 22V
- Switch Time (Ton, Toff) (Max):
- 175ns, 145ns
- -3db Bandwidth:
- -
- Charge Injection:
- 10pC
- Channel Capacitance (CS(off), CD(off)):
- 8pF
- Current - Leakage (IS(off)) (Max):
- 250pA
- Crosstalk:
- -80dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- 20-TSSOP
DG333ALDQ-T1-E3 FAQ
1.How can I place an order for DG333ALDQ-T1-E3 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG333ALDQ-T1-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 DG333ALDQ-T1-E3 reliable?
The price and inventory of DG333ALDQ-T1-E3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG333ALDQ-T1-E3 is usually 5 days.
3.What payment methods are accepted for DG333ALDQ-T1-E3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG333ALDQ-T1-E3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG333ALDQ-T1-E3?
DG333ALDQ-T1-E3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG333ALDQ-T1-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 DG333ALDQ-T1-E3?
For technical support, including DG333ALDQ-T1-E3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG333ALDQ-T1-E3 requirements.
6.How does Aetrix verify that DG333ALDQ-T1-E3 is sourced from the original manufacturer or authorized distributors?
All DG333ALDQ-T1-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 DG333ALDQ-T1-E3 meets industry standards.
7.What is the process for return or replacement of DG333ALDQ-T1-E3?
All DG333ALDQ-T1-E3 units undergo pre-shipment inspection (PSI). If there is an issue with DG333ALDQ-T1-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 DG333ALDQ-T1-E3 part is unused and in its original packaging.
Return procedure for DG333ALDQ-T1-E3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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