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Vishay Siliconix DG445BDY-E3
- Part No.:
- DG445BDY-E3
- Manufacturer:
- Vishay Siliconix
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG445BDY-E3.pdf
- Description:
- IC SWITCH SPST-NOX4 80OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,649
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Product details
Overview
DG445BDY-E3 from Vishay Siliconix is a monolithic quad SPST analog switch IC designed for bidirectional signal routing in precision analog systems. 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 used in sample-and-hold circuits where low charge injection (4 pC) minimizes pedestal error.
For engineers reviewing the DG445BDY-E3 datasheet, DG445BDY-E3 pinout, DG445BDY-E3 application, or DG445BDY-E3 equivalent, key selection criteria include guaranteed off-isolation (>90 dB at 100 kHz), channel-to-channel crosstalk (<−95 dB), leakage current <±0.02 nA over −40 °C to +85 °C, and SOIC-16 package compatibility with standard PCB footprints.
Technical Context
The DG445BDY-E3 implements complementary MOSFET switches per channel with epitaxial latchup protection and operates as an active-low quad SPST switch - logic '0' enables conduction, logic '1' disables. Its high-voltage silicon-gate process supports analog signal ranges from −15 V to +15 V (dual supply) or 0 V to +12 V (unipolar).
Each channel exhibits symmetrical on-resistance vs. drain voltage, minimal temperature drift in RDS(on), and matched on-capacitance (16 pF) and off-capacitance (5 pF each for source/drain), enabling predictable timing in multiplexed data acquisition paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance | 45 Ω typ. (±15 V supply); ensures <0.05% gain error in 1 kΩ load precision gain stages |
| Turn-On Time | 120 ns typ. (12 V unipolar); supports >1 MHz multiplexed sampling without settling delay penalty |
| Charge Injection | 4 pC max. (unipolar); limits hold-mode pedestal error to <4 mV in 1 nF hold capacitor |
| Off Isolation | −90 dB min. at 100 kHz; suppresses crosstalk between adjacent channels in multi-signal routing |
| Leakage Current | ±0.02 nA max. (−40 °C to +85 °C); preserves accuracy in high-impedance sensor front-ends |
| Analog Signal Range | −15 V to +15 V (dual), 0 V to +12 V (unipolar); accommodates industrial ±10 V and 0–10 V I/O standards |
| Logic Compatibility | TTL/CMOS inputs (0.8 V low / 2.4 V high); interfaces directly to FPGA GPIO or microcontroller outputs |
Pinout & Package
Package: 16-pin narrow-body SOIC (JEDEC MS-012, 3.9 mm width), footprint compatible with industry-standard SOIC-16 land patterns.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1–IN4 | Digital control inputs | Active-low enables: logic '0' turns on corresponding switch; inverted behavior vs. DG444B |
| S1–S4 | Source terminals | Low-impedance analog input nodes; symmetric conduction when switch is on |
| D1–D4 | Drain terminals | Low-impedance analog output nodes; bidirectional signal path with matched RDS(on) |
| V+ | Positive analog supply | Supports up to +15 V; defines upper analog rail and powers internal level shifters |
| V− | Negative analog supply | Supports down to −15 V; enables true bipolar signal switching |
| GND | Digital ground reference | Return for logic inputs and VL supply; isolated from analog grounds in mixed-signal layouts |
| VL | Logic supply voltage | Accepts 4.5–5.5 V; decouples logic threshold from analog rails for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Low on-resistance with flat voltage profile | RDS(on) varies <±5 Ω across full −15 V to +15 V analog range, minimizing gain nonlinearity |
| Minimized charge injection | 4 pC max. enables sub-12-bit accuracy in sample-and-hold circuits with 1 nF hold capacitors |
| High off-isolation and low crosstalk | −90 dB off-isolation and −95 dB channel-to-channel crosstalk prevent signal coupling in dense routing |
| Latchup-immune construction | Epitaxial layer prevents SCR latchup under transient overvoltage or ESD stress |
| Wide supply flexibility | Operates with ±15 V dual, +12 V single, or +5 V logic-only configurations without external biasing |
Applications
| Audio Switching | Data Acquisition |
|---|---|
Use Scenario: Routing line-level stereo signals between multiple codecs and amplifiers in professional audio mixers. IC Role / Device Role / Timing Role: Quad SPST switch providing silent, glitch-free channel selection with <120 ns transition time. Use Value: 45 Ω RDS(on) avoids audible attenuation; −95 dB crosstalk prevents left/right channel bleed in 24-bit systems. |
Use Scenario: Multiplexing 16-channel sensor inputs into a single 16-bit ADC in industrial PLC modules. IC Role / Device Role / Timing Role: Precision analog switch enabling synchronized sampling of thermocouple, RTD, and voltage inputs. Use Value: ±0.02 nA leakage preserves µV-level resolution; 4 pC charge injection prevents hold-step errors. |
| Sample-and-Hold Circuits | Automatic Test Equipment |
Use Scenario: Capturing fast transient waveforms in oscilloscope front-ends using switched-capacitor hold topology. IC Role / Device Role / Timing Role: Low-charge-injection switch isolating amplifier output from hold capacitor during acquisition phase. Use Value: 4 pC injection limits pedestal error to <4 mV on 1 nF capacitor; 120 ns tON supports 5 MHz sampling rates. |
Use Scenario: Reconfiguring stimulus/sense paths across DUT pins in boundary-scan test systems with 100+ node coverage. IC Role / Device Role / Timing Role: High-isolation analog switch enabling simultaneous signal routing and isolation verification. Use Value: −90 dB off-isolation ensures <−100 dB measurement floor; 45 Ω RDS(on) maintains calibration traceability. |
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 |
|---|---|---|---|
| ADG445BRZ | Higher RDS(on) (75 Ω typ.), slower tON (150 ns), no QFN option; requires 12 V logic supply for full analog range | Less suitable for 12-bit+ sample-and-hold due to higher charge injection (10 pC) | Prefer DG445BDY-E3 when <5 pC injection and <130 ns switching are required in space-constrained SOIC layouts |
| MAX4617ESE+ | Lower RDS(on) (35 Ω typ.) but only rated to ±10 V analog range; no −40 °C to +85 °C guarantee for leakage | Not recommended for medical instrumentation requiring full temperature-range leakage specs | Choose DG445BDY-E3 for applications needing guaranteed ±15 V operation and <±0.02 nA leakage across industrial temp range |
Compared with ADG445BRZ and MAX4617ESE+, the DG445BDY-E3 delivers superior combination of low charge injection (4 pC), wide analog range (±15 V), and guaranteed leakage performance over −40 °C to +85 °C - critical for precision data acquisition and medical-grade sample-and-hold designs.
Availability
DG445BDY-E3 is available at Aetrix Electronics and suitable for data acquisition systems, automatic test equipment, medical instrumentation, and precision sample-and-hold circuits requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for DG445BDY-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 power MOSFETs, analog switches, and precision resistors, with emphasis on high-reliability industrial and automotive applications.
The DG445BDY-E3 belongs to Vishay's high-speed CMOS analog switch product line, engineered specifically for low-distortion, low-error signal routing in test, measurement, and medical instrumentation where parameter stability across temperature and supply variation is essential.
FAQ
What is the maximum analog signal voltage range supported by the DG445BDY-E3?
The DG445BDY-E3 supports analog signals from −15 V to +15 V when operated with dual ±15 V supplies, or 0 V to +12 V with unipolar 12 V supply. Exceeding these ranges risks clamping by internal diodes and must be avoided per Absolute Maximum Ratings. This range makes DG445BDY-E3 suitable for industrial ±10 V I/O and medical sensor front-ends.
How does the DG445BDY-E3 differ from the DG444BDY-E3 in logic polarity?
The DG445BDY-E3 uses active-low logic control: INx = 0 V enables the switch, while INx = 2.4 V disables it. In contrast, DG444BDY-E3 is active-high. This inversion is explicit in the truth table and affects system-level logic design - DG445BDY-E3 eliminates need for external inverters when interfacing with open-drain or active-low controllers.
Is the DG445BDY-E3 pin-compatible with older DG445 variants like DG445BDJ-E3?
Yes - DG445BDY-E3 (SOIC-16) shares identical pinout and electrical specifications with DG445BDJ-E3 (PDIP-16). Both use the same functional block diagram, truth table, and absolute maximum ratings. The only differences are package type and thermal characteristics; layout changes are unnecessary when migrating from PDIP to SOIC.
What is the typical charge injection value for DG445BDY-E3 and why does it matter?
DG445BDY-E3 specifies 4 pC typical charge injection under unipolar 12 V conditions. This low value minimizes voltage step (pedestal error) on hold capacitors in sample-and-hold circuits - for example, with a 1 nF capacitor, 4 pC injection causes only 4 mV disturbance. This enables accurate DC-coupled acquisition in 12-bit+ systems without post-correction.
Does DG445BDY-E3 require separate logic and analog ground connections?
No - DG445BDY-E3 uses a single GND pin for digital reference, and VL is referenced to this same GND. However, best practice is to route analog (V+, V−) and digital (GND, VL) grounds separately on PCB and tie them at a single point near the device to avoid noise coupling. The datasheet confirms GND serves both logic and substrate reference functions.
DG445BDY-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):
- 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-E3 FAQ
1.How can I place an order for DG445BDY-E3 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG445BDY-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-E3 reliable?
The price and inventory of DG445BDY-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-E3 is usually 5 days.
3.What payment methods are accepted for DG445BDY-E3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG445BDY-E3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG445BDY-E3?
DG445BDY-E3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG445BDY-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-E3?
For technical support, including DG445BDY-E3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG445BDY-E3 requirements.
6.How does Aetrix verify that DG445BDY-E3 is sourced from the original manufacturer or authorized distributors?
All DG445BDY-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-E3 meets industry standards.
7.What is the process for return or replacement of DG445BDY-E3?
All DG445BDY-E3 units undergo pre-shipment inspection (PSI). If there is an issue with DG445BDY-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-E3 part is unused and in its original packaging.
Return procedure for DG445BDY-E3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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