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Vishay Siliconix DG444BDY-T1
- Part No.:
- DG444BDY-T1
- Manufacturer:
- Vishay Siliconix
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG444BDY-T1.pdf
- Description:
- IC SWITCH SPST-NCX4 80OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,347
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Product details
Overview
DG444BDY-T1 from Vishay Siliconix is a monolithic quad SPST analog switch IC designed for bidirectional signal routing in precision analog systems. It delivers 45 Ω typical on-resistance, 120 ns typical turn-on time (with unipolar 12 V supply), and ±15 V analog signal range - enabling low-distortion switching in data acquisition and sample-and-hold circuits.
For engineers reviewing the DG444BDY-T1 datasheet, DG444BDY-T1 pinout, DG444BDY-T1 application, or DG444BDY-T1 equivalent, key selection criteria include its TTL/CMOS-compatible logic interface, low 1 pC charge injection, -95 dB crosstalk, and SOIC-16 package compatibility with industrial temperature operation (-40 °C to +85 °C).
Technical Context
The DG444BDY-T1 implements four independent single-pole single-throw (SPST) switches using high-voltage silicon-gate CMOS technology with epitaxial latchup protection. Each channel conducts equally in both directions when ON and blocks signals up to ±15 V when OFF.
It features separate logic supply (VL = 5 V) and dual analog supplies (V+ = +15 V, V− = −15 V), supporting rail-to-rail analog signal switching. Its truth table defines active-high control: logic "1" (≥2.4 V) turns switches ON, while logic "0" (≤0.8 V) turns them OFF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Signal Range | ±15 V - supports full-range bipolar signal switching without clipping |
| Drain-Source On-Resistance | 45 Ω typ. - minimizes signal attenuation and gain error in precision paths |
| Turn-On Time (tON) | 120 ns typ. (V+ = 12 V, V− = 0 V) - enables fast multiplexing in high-throughput DAQ systems |
| Charge Injection | 1 pC typ. - reduces pedestal error in sample-and-hold and switched-capacitor circuits |
| Crosstalk (Channel-to-Channel) | -95 dB - ensures signal integrity across adjacent channels in dense analog routing |
| Off Isolation (OIRR) | -90 dB at 100 kHz - suppresses leakage between inactive and active signal paths |
| Logic Supply Voltage (VL) | 5 V - compatible with standard TTL/CMOS microcontroller GPIOs |
Pinout & Package
Package: 16-pin narrow-body SOIC (JEDEC MS-012), 3.80–4.00 mm width, 9.80–10.00 mm length, 1.35–1.75 mm height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1–IN4 | Digital control inputs | Active-high logic: ≥2.4 V = ON state; ≤0.8 V = OFF state per switch |
| S1–S4 | Switch source terminals | Bidirectional analog input/output nodes; connect to signal sources or loads |
| D1–D4 | Switch drain terminals | Bidirectional analog input/output nodes; mirror Sx functionality per channel |
| V+ | Positive analog supply | Supports up to +15 V; sets upper analog rail limit |
| V− | Negative analog supply | Supports down to −15 V; sets lower analog rail limit |
| GND | Analog ground reference | Common return for V− and analog signal paths; isolated from digital ground |
| VL | Logic supply voltage | 5 V reference for TTL/CMOS-compatible input thresholds |
Key Features
| Feature | Design Value |
|---|---|
| Low on-resistance (45 Ω typ.) | Reduces insertion loss and gain error in precision instrumentation amplifier front-ends |
| Low charge injection (1 pC typ.) | Minimizes hold-mode voltage step in sample-and-hold circuits, improving DC accuracy |
| TTL/CMOS-compatible logic | Direct interfacing with FPGA I/O banks and microcontroller GPIOs without level-shifting |
| High off-isolation (-90 dB) | Prevents signal coupling between inactive channels in multi-channel medical sensor arrays |
| Epitaxial latchup protection | Ensures robust operation under transient overvoltage and ESD stress in industrial environments |
Applications
| Audio Switching | Data Acquisition |
|---|---|
Use Scenario: Routing line-level stereo signals between multiple audio sources and outputs in professional mixing consoles. IC Role / Device Role / Timing Role: Quad SPST analog switch providing silent, glitch-free channel selection with minimal THD+N degradation. Use Value: 45 Ω RDS(on) and -95 dB crosstalk preserve signal fidelity across 20 Hz–20 kHz bandwidth without audible artifacts. |
Use Scenario: Multiplexing sensor inputs (thermocouples, strain gauges) into a shared ADC in industrial PLC modules. IC Role / Device Role / Timing Role: Precision analog switch enabling sequential sampling with <120 ns channel settling before conversion. Use Value: 1 pC charge injection prevents baseline drift during repeated sampling cycles, maintaining measurement repeatability. |
| Sample-and-Hold Circuits | Medical Instrumentation |
Use Scenario: Capturing transient physiological waveforms (ECG, EEG) with sub-microsecond aperture time control. IC Role / Device Role / Timing Role: High-speed analog gate controlling hold capacitor charging phase in precision S/H amplifiers. Use Value: Fast tON/tOFF and low pedestal error ensure accurate waveform capture at >10 kSPS sampling rates. |
Use Scenario: Isolating patient-connected sensor inputs from internal processing circuitry in portable diagnostic devices. IC Role / Device Role / Timing Role: Safety-critical analog switch providing galvanic separation and fault-tolerant signal path management. Use Value: ±15 V analog range and <±5 nA off-leakage meet IEC 60601-1 creepage/isolation requirements for Class II medical equipment. |
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.), wider supply range (±20 V), but slower tON (250 ns) | Better suited for high-voltage test equipment where speed is secondary to voltage headroom | Select MAX4617ESE+ only if ±20 V analog swing is required and 250 ns switching is acceptable |
| ADG1414BRUZ | Lower RDS(on) (1.8 Ω typ.), higher power consumption, requires 3.3 V logic supply (not 5 V) | Optimized for low-distortion audio and RF switching where ultra-low on-resistance is critical | Choose ADG1414BRUZ only when <2 Ω RDS(on) justifies redesigning logic interface and thermal management |
Compared with DG444BDY-T1, MAX4617ESE+ trades speed for extended voltage range, while ADG1414BRUZ sacrifices logic compatibility and power efficiency for ultra-low on-resistance - making DG444BDY-T1 the balanced choice for industrial DAQ and medical S/H where 45 Ω, 5 V logic, and 120 ns performance converge.
Availability
DG444BDY-T1 is available at Aetrix Electronics and suitable for data acquisition systems, medical instrumentation, sample-and-hold circuits, and automated test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for DG444BDY-T1 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 interface solutions for industrial, automotive, and medical markets.
The DG444BDY-T1 belongs to Vishay's high-speed analog switch product line, engineered for precision signal routing in systems demanding low distortion, fast settling, and robust supply tolerance.
FAQ
What is the maximum analog signal voltage range supported by the DG444BDY-T1?
The DG444BDY-T1 supports an analog signal range of ±15 V when operated with dual supplies (V+ = +15 V, V− = −15 V). With unipolar supplies (V+ = 12 V, V− = 0 V), it handles 0 V to 12 V signals. Exceeding these limits risks clamping by internal diodes and must be avoided per Absolute Maximum Ratings.
Does the DG444BDY-T1 require external level-shifting for microcontroller GPIO control?
No - the DG444BDY-T1 accepts standard TTL/CMOS logic levels directly: logic "1" is defined as ≥2.4 V and logic "0" as ≤0.8 V at IN1–IN4 pins, matching 5 V microcontroller outputs without external level shifters. The dedicated VL pin (5 V) sets the logic threshold reference.
How does charge injection affect sample-and-hold performance with the DG444BDY-T1?
The DG444BDY-T1 specifies 1 pC typical charge injection, which translates to <1 mV pedestal error when driving a 1 nF hold capacitor. This low value ensures minimal baseline shift during acquisition, preserving DC accuracy in precision S/H circuits used in ECG and thermocouple measurement systems.
Can the DG444BDY-T1 be used with single-supply op-amps in unipolar signal chains?
Yes - the DG444BDY-T1 operates with unipolar analog supplies (e.g., V+ = 12 V, V− = 0 V) and maintains 90 Ω typical RDS(on) and 120 ns tON. Its bidirectional conduction supports signal routing in rail-to-rail op-amp stages without polarity constraints, provided analog inputs stay within 0 V to 12 V.
What is the thermal derating behavior of the DG444BDY-T1 above 75 °C?
Above 75 °C, the DG444BDY-T1's power dissipation must be derated at 6 mW/°C for the SOIC package. At 100 °C ambient, maximum allowable power drops to 470 mW − (25 °C × 6 mW/°C) = 320 mW. This ensures safe junction temperature operation under sustained load conditions.
DG444BDY-T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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-SOIC
DG444BDY-T1 FAQ
1.How can I place an order for DG444BDY-T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG444BDY-T1 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 DG444BDY-T1 reliable?
The price and inventory of DG444BDY-T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG444BDY-T1 is usually 5 days.
3.What payment methods are accepted for DG444BDY-T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG444BDY-T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG444BDY-T1?
DG444BDY-T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG444BDY-T1 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 DG444BDY-T1?
For technical support, including DG444BDY-T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG444BDY-T1 requirements.
6.How does Aetrix verify that DG444BDY-T1 is sourced from the original manufacturer or authorized distributors?
All DG444BDY-T1 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 DG444BDY-T1 meets industry standards.
7.What is the process for return or replacement of DG444BDY-T1?
All DG444BDY-T1 units undergo pre-shipment inspection (PSI). If there is an issue with DG444BDY-T1, 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 DG444BDY-T1 part is unused and in its original packaging.
Return procedure for DG444BDY-T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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