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Vishay Siliconix DG444BDN-T1-E4
- Part No.:
- DG444BDN-T1-E4
- Manufacturer:
- Vishay Siliconix
- Package:
- 16-VQFN Exposed Pad
- Datasheet:
-
DG444BDN-T1-E4.pdf
- Description:
- IC SWITCH SPST-NCX4 80OHM 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,668
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Product details
Overview
DG444BDN-T1-E4 from Vishay Siliconix is a monolithic quad SPST CMOS analog switch optimized for bidirectional signal routing in precision data acquisition and audio systems. It delivers 45 Ω typical on-resistance, 120 ns typical turn-on time (with unipolar 12 V supply), and <1 pC charge injection - enabling low-distortion switching in sample-and-hold and programmable-gain amplifier circuits.
For engineers reviewing the DG444BDN-T1-E4 datasheet, DG444BDN-T1-E4 pinout, DG444BDN-T1-E4 application, or DG444BDN-T1-E4 equivalent, key selection criteria include dual-supply (±15 V) or single-supply (12 V) operation, QFN-16 (4 × 4 mm) thermal performance, leakage current below ±5 nA over temperature, and TTL/CMOS-compatible digital control inputs.
Technical Context
The DG444BDN-T1-E4 implements four independent analog switches with symmetrical conduction in both directions when enabled, and rail-to-rail analog signal blocking (±15 V range) when off. Its high-voltage silicon-gate process includes an epitaxial layer to prevent latchup.
Each channel features matched source/drain terminals, logic-level translation via VL pin (5 V reference), and internal clamping diodes limiting analog signals to V+ or V−. Switching is controlled by active-high logic inputs - DG444B turns ON at logic high (≥2.4 V), unlike the complementary DG445B.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance | 45 Ω typ. at ±15 V supplies - ensures minimal signal attenuation and gain error in precision resistor networks. |
| Turn-On Time | 120 ns typ. (12 V unipolar) - supports ≥5 MHz sampling rates in data acquisition front-ends. |
| Charge Injection | 1 pC typ. - reduces pedestal error to <1 mV in 1 nF hold capacitors, critical for 12-bit+ sample-and-hold accuracy. |
| Analog Signal Range | ±15 V (dual) or 0–12 V (unipolar) - accommodates industrial sensor outputs and audio line-level signals without external level shifting. |
| Off-Leakage Current | ±0.01 nA max. at 85 °C - preserves capacitor voltage integrity over >100 ms hold times in low-power instrumentation. |
| Logic Compatibility | TTL/CMOS inputs with 0.8 V low / 2.4 V high thresholds - interfaces directly with microcontrollers and FPGAs without level shifters. |
| Supply Current | ±1 µA max. (I+, I−) - enables battery-operated portable test equipment with multi-year standby life. |
Pinout & Package
Package: QFN-16 (4 mm × 4 mm, 0.65 mm pitch), variation 1 per Vishay document 71921 - provides 850 mW power dissipation and low thermal resistance for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1–IN4 | Digital control input (active-high) | Enables corresponding switch when ≥2.4 V; logic low disables switch (DG444B function). |
| S1–S4 | Analog source terminal | Bidirectional path: connects to Dn when switch is ON; blocks up to ±15 V when OFF. |
| D1–D4 | Analog drain terminal | Paired with Sn; identical electrical behavior - no source/drain distinction in conduction. |
| V+ | Positive analog supply | Accepts +12 V (unipolar) or +15 V (bipolar); sets upper analog rail and powers internal circuitry. |
| V− | Negative analog supply | Accepts 0 V (unipolar) or −15 V (bipolar); sets lower analog rail and enables true bipolar signal handling. |
| GND | Digital ground reference | Return path for logic inputs and VL supply; isolated from analog grounds in mixed-signal designs. |
| VL | Logic supply reference | 5 V input defining logic threshold levels; decoupled from V+/V− to prevent noise coupling into control path. |
Key Features
| Feature | Design Value |
|---|---|
| Low on-resistance flatness | ≤15 Ω variation across ±10 V analog range - maintains channel-to-channel gain matching in multiplexed sensor arrays. |
| Ultra-low charge injection | 1 pC typ. (CL = 1 nF) - limits hold-step error to <1 LSB in 12-bit systems using 1000 pF capacitors. |
| Rail-to-rail blocking | Blocks signals beyond V+ or V− by internal clamping - eliminates need for external protection diodes in ±15 V systems. |
| Latchup immunity | Epitaxial isolation layer - guarantees operation under transient overvoltage without destructive latchup per JEDEC JESD78. |
| Thermal power rating | 850 mW in QFN-16 package - supports sustained 100 mA channel current at 75 °C ambient without derating. |
Applications
| Audio Switching | Data Acquisition |
|---|---|
|
Use Scenario: Routing line-level stereo signals between multiple codecs, ADCs, and amplifiers in professional audio mixers. IC Role / Device Role / Timing Role: Quad SPST switch providing silent, pop-free channel selection with <1 pC charge injection. Use Value: Eliminates mechanical relay wear and audible switching transients while maintaining THD < −100 dB across 20 Hz–20 kHz. |
Use Scenario: Multiplexing 16-channel thermocouple or RTD inputs into a single precision ADC in industrial PLC modules. IC Role / Device Role / Timing Role: Low-leakage analog switch enabling <1 µV offset drift over 85 °C temperature range. Use Value: Reduces calibration frequency from quarterly to annual by limiting input bias current contribution to <0.1 % of full-scale error. |
| Sample-and-Hold Circuits | Programmable-Gain Amplifiers |
|
Use Scenario: Capturing fast transient waveforms in oscilloscope front-ends with 100 MS/s sampling and 12-bit resolution. IC Role / Device Role / Timing Role: Precision hold switch with 120 ns tON and sub-pC charge injection to minimize aperture uncertainty. Use Value: Enables effective number of bits (ENOB) ≥11.3 at 100 kHz input frequency without external correction. |
Use Scenario: Digitally selecting feedback resistor ratios in instrumentation amplifiers for programmable gains of 1×, 10×, 20×, and 100×. IC Role / Device Role / Timing Role: Low-RDS(on) switch minimizing gain error contribution from switch resistance in weighted-resistor networks. Use Value: Achieves gain accuracy of ±0.05 % (vs. ±0.5 % with mechanical switches) using 0.1 % metal-film resistors. |
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 |
|---|---|---|---|
| MAX4618ESE+ | Higher RDS(on) (100 Ω typ.), slower tON (200 ns), but integrated fault protection and ±20 V abs max rating. | Better suited for harsh industrial environments with frequent overvoltage transients. | Select MAX4618ESE+ when system-level surge immunity (IEC 61000-4-5) is required over raw speed or leakage performance. |
| ADG1414BRUZ | Lower RDS(on) (1.3 Ω typ.), higher supply voltage (±15 V), but larger TSSOP-16 package and 3× higher cost. | Preferred in high-precision test equipment where <0.1 % gain error dominates BOM cost sensitivity. | Choose ADG1414BRUZ only when on-resistance must be <2 Ω and thermal budget allows TSSOP's lower power density. |
Compared with DG444BDN-T1-E4, MAX4618ESE+ trades speed and leakage for ruggedness, while ADG1414BRUZ sacrifices cost and size for ultra-low on-resistance - making DG444BDN-T1-E4 the optimal balance for space-constrained, battery-powered data loggers requiring <1 pC charge injection and 850 mW thermal headroom.
Availability
DG444BDN-T1-E4 is available at Aetrix Electronics and suitable for precision data acquisition, portable medical instrumentation, automated test equipment, and industrial audio routing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for DG444BDN-T1-E4 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 power MOSFETs, analog switches, and precision resistors for industrial and automotive markets.
The DG444B family was designed specifically for high-fidelity analog signal routing in measurement-grade systems - emphasizing low charge injection, rail-to-rail operation, and latchup immunity in compact surface-mount packages.
FAQ
What is the maximum analog signal voltage supported by DG444BDN-T1-E4?
DG444BDN-T1-E4 supports analog signals from V− to V+ - up to ±15 V with dual supplies or 0 V to +12 V with unipolar operation. Absolute maximum ratings specify V+ to V− ≤ 44 V, but functional analog range is bounded by supply rails. Exceeding V+ or V− triggers internal clamping diodes, limiting forward current to 30 mA continuous.
Does DG444BDN-T1-E4 require external pull-up or pull-down resistors on its INx pins?
No, DG444BDN-T1-E4 does not require external biasing on IN1–IN4. Its TTL/CMOS-compatible inputs have guaranteed thresholds (VINL ≤ 0.8 V, VINH ≥ 2.4 V) and leakage currents <±1 µA, allowing direct connection to microcontroller GPIOs or FPGA outputs without pull resistors - provided the driving source meets voltage and current specs.
Can DG444BDN-T1-E4 operate with VL = 3.3 V while V+ = ±15 V?
No - DG444BDN-T1-E4 requires VL to be within (GND − 0.3 V) to (V+) + 0.3 V per absolute maximum ratings. With V+ = +15 V, VL must be ≤ +15.3 V. However, the datasheet specifies operation only at VL = 5 V for guaranteed timing and logic compatibility. Using 3.3 V may cause undefined switching behavior or increased propagation delay.
How does the QFN-16 package of DG444BDN-T1-E4 improve thermal performance versus SOIC-16?
DG444BDN-T1-E4's QFN-16 package delivers 850 mW power dissipation (vs. 640 mW for SOIC-16) due to its exposed thermal pad and lower junction-to-board thermal resistance. This allows sustained operation at 85 °C ambient with full 100 mA channel current, whereas SOIC variants require derating above 75 °C per Vishay's 8 mW/°C rule.
Is DG444BDN-T1-E4 pin-compatible with the older DG444DJ DIP package?
No - DG444BDN-T1-E4 (QFN-16) has different pin mapping and physical layout than DG444DJ (16-pin DIP). While both share identical logic functionality and electrical specs, the QFN variant reorders pins (e.g., IN1 at pin 1 vs. pin 16 in DIP) and lacks through-hole leads. PCB redesign is required for migration.
DG444BDN-T1-E4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SPST - NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 80Ohm
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- 13V ~ 36V
- Voltage - Supply, Dual (V±):
- ±7V ~ 22V
- Switch Time (Ton, Toff) (Max):
- 300ns, 200ns
- -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-QFN (4x4)
DG444BDN-T1-E4 FAQ
1.How can I place an order for DG444BDN-T1-E4 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG444BDN-T1-E4 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 DG444BDN-T1-E4 reliable?
The price and inventory of DG444BDN-T1-E4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG444BDN-T1-E4 is usually 5 days.
3.What payment methods are accepted for DG444BDN-T1-E4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG444BDN-T1-E4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG444BDN-T1-E4?
DG444BDN-T1-E4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG444BDN-T1-E4 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 DG444BDN-T1-E4?
For technical support, including DG444BDN-T1-E4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG444BDN-T1-E4 requirements.
6.How does Aetrix verify that DG444BDN-T1-E4 is sourced from the original manufacturer or authorized distributors?
All DG444BDN-T1-E4 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 DG444BDN-T1-E4 meets industry standards.
7.What is the process for return or replacement of DG444BDN-T1-E4?
All DG444BDN-T1-E4 units undergo pre-shipment inspection (PSI). If there is an issue with DG444BDN-T1-E4, 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 DG444BDN-T1-E4 part is unused and in its original packaging.
Return procedure for DG444BDN-T1-E4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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