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Vishay Siliconix DG445BDY-T1-E3
- Part No.:
- DG445BDY-T1-E3
- Manufacturer:
- Vishay Siliconix
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG445BDY-T1-E3.pdf
- Description:
- IC SWITCH SPST-NOX4 80OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,922
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Product details
Overview
DG445BDY-T1-E3 from Vishay Siliconix is a monolithic quad SPST analog switch IC designed for bidirectional signal routing in precision analog and audio paths. It features 45 Ω typical on-resistance, 120 ns typical turn-on time (with unipolar 12 V supply), and TTL/CMOS-compatible logic control. The device operates with dual ±15 V or single 12 V supplies and is optimized for sample-and-hold circuits and data acquisition systems.
For engineers reviewing the DG445BDY-T1-E3 datasheet, DG445BDY-T1-E3 pinout, DG445BDY-T1-E3 application, or DG445BDY-T1-E3 equivalent, key selection criteria include guaranteed low charge injection (1 pC typ.), high off-isolation (–90 dB at 100 kHz), and SOIC-16 package compatibility with industrial temperature range (–40 °C to +85 °C).
Technical Context
The DG445BDY-T1-E3 implements four independent SPST switches with complementary logic behavior versus the DG444B: logic high enables conduction (ON), logic low disables (OFF). Each channel conducts equally well in both directions when ON and blocks analog signals up to the supply rails when OFF.
It uses Vishay Siliconix's high-voltage silicon-gate process with an epitaxial layer to prevent latchup. Switching performance is specified across dual-supply (±15 V) and unipolar (12 V) configurations, with RDS(on) varying predictably with drain voltage and temperature per published curves.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance | 45 Ω typical (±15 V supplies); ensures minimal signal attenuation and gain error in precision gain-setting networks |
| Turn-On Time | 120 ns typical (12 V unipolar supply); supports sampling rates up to ~4 MHz in data acquisition front-ends |
| Charge Injection | 1 pC typical (CL = 1 nF); limits pedestal error to < 1 mV in 12-bit sample-and-hold applications |
| Off Isolation | –90 dB at 100 kHz; suppresses crosstalk between adjacent channels in multi-channel multiplexers |
| Analog Signal Range | ±15 V (dual supply) or 0–12 V (unipolar); accommodates full-rail audio and industrial sensor outputs |
| Logic Compatibility | TTL/CMOS inputs (VINL ≤ 0.8 V, VINH ≥ 2.4 V); interfaces directly with microcontrollers and FPGAs without level shifters |
| Supply Current | ±1 µA typical (I+, I−); enables low-power operation in battery-backed instrumentation |
Pinout & Package
Package: 16-pin narrow-body SOIC (JEDEC MS-012), 3.9 mm × 9.9 mm footprint, 1.75 mm max height, lead-free and RoHS-compliant (E3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 5, 8 | IN1–IN4 (Digital Control Inputs) | Active-high logic inputs controlling respective switch states; inverted relative to DG444B |
| 2, 3, 6, 7 | S1–S4 (Source Terminals) | Switch input nodes; bidirectional-function as either source or drain depending on signal flow |
| 10, 11, 14, 15 | D1–D4 (Drain Terminals) | Switch output nodes; matched impedance and capacitance to sources for symmetric signal routing |
| 9 | GND | Analog and digital ground reference; must be low-impedance for low-noise switching |
| 12 | VL | Logic supply pin (typically 5 V); decoupled separately to minimize digital noise coupling into analog path |
| 13 | V− | Negative analog supply rail; sets lower bound of analog signal range and bias for internal circuitry |
| 16 | V+ | Positive analog supply rail; sets upper bound of analog signal range and powers switch core |
Key Features
| Feature | Design Value |
|---|---|
| Low on-resistance matching | ≤ 5 % channel-to-channel variation ensures consistent gain scaling in programmable-gain amplifier topologies |
| Minimized charge injection | 1 pC typical enables sub-12-bit settling accuracy in precision sample-and-hold circuits without external correction |
| High off-isolation | –90 dB at 100 kHz prevents signal bleed between active and inactive channels in multi-sensor monitoring systems |
| Latchup immunity | Epitaxial layer structure eliminates risk of destructive latchup under transient overvoltage conditions |
| Bidirectional conduction | Identical RDS(on) and capacitance in both directions simplifies PCB layout and supports AC-coupled signal routing |
Applications
| Audio Switching | Data Acquisition |
|---|---|
|
Use Scenario: Routing line-level stereo signals between multiple codecs, amplifiers, or ADCs in professional audio mixers. IC Role / Device Role / Timing Role: Quad SPST switch providing silent, glitch-free analog path selection with no DC offset or level shift. Use Value: 45 Ω RDS(on) and < 1 pC charge injection preserve dynamic range and THD+N below –100 dB. |
Use Scenario: Multiplexing 16-channel sensor inputs (thermocouples, strain gauges) into a single high-resolution ADC. IC Role / Device Role / Timing Role: Precision analog switch enabling sequential sampling with minimal channel crosstalk and pedestal error. Use Value: –90 dB off-isolation and matched on-resistance ensure < 0.01 % inter-channel gain mismatch. |
| Sample-and-Hold Circuits | Communication Systems |
|
Use Scenario: Capturing fast transient waveforms in oscilloscope front-ends or RF envelope detectors. IC Role / Device Role / Timing Role: Low-charge-injection switch isolating hold capacitor during acquisition phase. Use Value: 1 pC typical charge injection limits hold-step error to < 0.5 mV for 1 nF hold capacitors. |
Use Scenario: Signal routing in baseband IF stages of cellular infrastructure equipment and software-defined radios. IC Role / Device Role / Timing Role: High-speed analog switch selecting between calibration paths, filters, or gain stages. Use Value: 120 ns tON supports > 4 MSPS switching for real-time adaptive filtering and self-test sequences. |
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) (100 Ω typ.), slower tON (200 ns), but offers fault protection and higher ESD rating (±4 kV HBM) | Better suited for industrial field I/O modules where overvoltage transients are common | Select MAX4617ESE+ when robustness against ±20 V faults outweighs need for lowest on-resistance |
| ADG1414BRUZ | Lower RDS(on) (1.3 Ω typ.), faster switching (125 ns), but requires higher logic supply (VL = 3.3 V or 5 V) and costs ~3× more | Ideal for high-precision test equipment demanding sub-16-bit linearity and ultra-low thermal EMF | Choose ADG1414BRUZ only when system-level accuracy justifies premium cost and tighter layout constraints |
Compared with DG445BDY-T1-E3, MAX4617ESE+ trades speed and on-resistance for ruggedness, while ADG1414BRUZ delivers superior analog performance at significantly higher cost and complexity-making DG445BDY-T1-E3 the optimal balance for cost-sensitive, high-fidelity industrial data acquisition.
Availability
DG445BDY-T1-E3 is available at Aetrix Electronics and suitable for data acquisition systems, medical instrumentation, and communication infrastructure requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for DG445BDY-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 semiconductor manufacturer specializing in discrete MOSFETs, diodes, optoelectronics, and precision analog switches with emphasis on reliability and high-voltage performance.
The DG445B family was developed to upgrade legacy DG445 analog switches with improved RDS(on), reduced charge injection, and enhanced latchup immunity for next-generation test and measurement equipment.
FAQ
What is the maximum analog signal voltage supported by DG445BDY-T1-E3?
DG445BDY-T1-E3 supports analog signals from V− to V+ - up to ±15 V with dual supplies or 0 V to 12 V with unipolar 12 V supply. Exceeding these rails clamps signals via internal diodes; forward current must remain below 30 mA continuous or 100 mA pulsed to avoid damage. Always observe absolute maximum ratings in the datasheet.
How does DG445BDY-T1-E3 differ from DG444BDY-T1-E3 in logic behavior?
DG445BDY-T1-E3 has active-high logic control: INx = high enables the switch (ON), INx = low disables it (OFF). DG444BDY-T1-E3 is active-low - its truth table is inverted. This difference is critical for firmware compatibility; swapping them without logic inversion causes functional failure in existing designs.
Can DG445BDY-T1-E3 operate with VL = 3.3 V while using ±15 V analog supplies?
Yes - DG445BDY-T1-E3 accepts VL from 2.4 V to 5.5 V independently of V+/V−. With VL = 3.3 V, VINH remains ≥ 2.4 V and VINL ≤ 0.8 V, satisfying TTL/CMOS thresholds. However, ensure VL is decoupled with a 0.1 µF ceramic capacitor close to Pin 12 to prevent digital noise from modulating analog performance.
What is the typical charge injection value for DG445BDY-T1-E3 and how does it affect sample-and-hold accuracy?
DG445BDY-T1-E3 specifies 1 pC typical charge injection (Q) under CL = 1 nF, Vgen = 0 V conditions. In a 1 nF hold capacitor, this produces a 1 mV pedestal error (ΔV = Q/C). For 12-bit accuracy (LSB = 2.4 mV at 10 V full scale), this error is within tolerance - no correction circuitry needed.
Is DG445BDY-T1-E3 pin-compatible with older DG445 variants like DG445DJ?
Yes - DG445BDY-T1-E3 shares identical pinout and electrical specifications with all DG445 variants in SOIC-16 (e.g., DG445BDY-E3, DG445BDJ-E3). The "B" suffix denotes the improved process generation; "DY" indicates narrow SOIC; "T1-E3" specifies tape-and-reel packaging and lead-free finish. No PCB changes are required for drop-in replacement.
DG445BDY-T1-E3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Last Time Buy
- Switch Circuit:
- SPST - NO
- 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-SOIC
DG445BDY-T1-E3 FAQ
1.How can I place an order for DG445BDY-T1-E3 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG445BDY-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 DG445BDY-T1-E3 reliable?
The price and inventory of DG445BDY-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 DG445BDY-T1-E3 is usually 5 days.
3.What payment methods are accepted for DG445BDY-T1-E3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG445BDY-T1-E3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG445BDY-T1-E3?
DG445BDY-T1-E3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG445BDY-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 DG445BDY-T1-E3?
For technical support, including DG445BDY-T1-E3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG445BDY-T1-E3 requirements.
6.How does Aetrix verify that DG445BDY-T1-E3 is sourced from the original manufacturer or authorized distributors?
All DG445BDY-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 DG445BDY-T1-E3 meets industry standards.
7.What is the process for return or replacement of DG445BDY-T1-E3?
All DG445BDY-T1-E3 units undergo pre-shipment inspection (PSI). If there is an issue with DG445BDY-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 DG445BDY-T1-E3 part is unused and in its original packaging.
Return procedure for DG445BDY-T1-E3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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