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Vishay Siliconix DG444DY
- Part No.:
- DG444DY
- Manufacturer:
- Vishay Siliconix
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG444DY.pdf
- Description:
- IC SWITCH SPST-NCX4 85OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,491
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Product details
Overview
DG444DY from Maxim Integrated is a quad, normally closed (NC), single-pole/single-throw (SPST) analog switch IC designed for precision signal routing in bipolar or single-supply systems. It delivers 85Ω max on-resistance, 4Ω max on-resistance matching between channels, <5nA off-leakage at +85°C, 10pC max charge injection, and rail-to-rail analog signal handling up to ±15V - enabling high-fidelity switching in test equipment and military radios.
For engineers reviewing the DG444DY datasheet, DG444DY pinout, DG444DY application, or DG444DY equivalent, key selection criteria include guaranteed RON flatness (9Ω max), ESD tolerance (2000V min per Method 3015.7), TTL/CMOS logic compatibility, dual-supply operation (±4.5V to ±20V), and -40°C to +85°C industrial temperature rating.
Technical Context
The DG444DY implements four independent NC analog switches fabricated using a 44V silicon-gate process, supporting both bipolar (±4.5V to ±20V) and single-supply (+10V to +30V) operation with VL referenced to +5V for TTL compatibility. Its architecture guarantees matched channel performance: RON match ≤4Ω and RFLAT(ON) ≤9Ω over the full analog signal range (±15V).
Switching is controlled by active-low logic inputs (IN1–IN4), with propagation delays under 250ns tON and 70ns tOFF at ±16.5V supplies. The device features low power consumption (35µW max), electrostatic discharge protection (2000V min), and leakage currents fully tested at +85°C - critical for battery-operated and ruggedized systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RDS(ON)) | 85Ω max - ensures minimal signal attenuation and voltage drop across switched paths at full analog range |
| On-Resistance Match | 4Ω max - enables precise gain/phase matching in multi-channel instrumentation and audio routing |
| On-Resistance Flatness | 9Ω max - maintains consistent insertion loss across ±15V signal swing, critical for linearity-sensitive applications |
| Charge Injection | 10pC max - minimizes voltage glitch on sample-and-hold capacitors and prevents DAC output disturbance |
| Off-Leakage Current | <5nA at +85°C - preserves signal integrity in high-impedance sensor interfaces and long-duration hold circuits |
| Supply Range | ±4.5V to ±20V (bipolar) or +10V to +30V (single) - supports wide dynamic range and legacy system compatibility |
| ESD Tolerance | 2000V min (HBM, Method 3015.7) - provides robust handling during board assembly and field service |
Pinout & Package
DG444DY is supplied in a 16-pin narrow SO (Small Outline) package with standard 1.27mm pitch, JEDEC MS-012 compliant footprint, and exposed pad connected to V+ for thermal enhancement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1–IN4 | Logic Control Inputs | Active-low digital control lines; compatible with TTL/CMOS logic levels when VL = +5V |
| D1–D4 | Drain Outputs | Switch output terminals; conduct to Sx when corresponding INx = logic low (NC configuration) |
| S1–S4 | Source Outputs | Switch input terminals; tied internally to V− in NC state; support bidirectional signal flow |
| V+ | Positive Supply Voltage | Primary positive rail (up to +30V); also connects to substrate and exposed pad for thermal stability |
| V− | Negative Supply Voltage | Primary negative rail (down to −30V); required for bipolar operation; clamps analog signals |
| GND | Ground Reference | Signal ground reference point; separate from power supply return paths |
| VL | Logic Supply Voltage | Input logic level reference; set to +5V for TTL compatibility or to V+ for CMOS-level thresholds |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports ±15V continuous signal swing without clipping or distortion - essential for full-scale industrial sensor interfacing |
| Guaranteed RON flatness | 9Ω max variation across entire ±15V analog range - ensures consistent gain and THD in audio and measurement paths |
| Low charge injection | 10pC max - reduces settling error in precision sample-and-hold and multiplexed ADC front-ends |
| Bipolar and single-supply operation | Operates from ±4.5V to ±20V or +10V to +30V - eliminates need for external level shifters in mixed-voltage systems |
| TTL/CMOS logic compatibility | Accepts standard 0.8V/2.4V thresholds with VL = +5V - simplifies integration with FPGA, MCU, and ASIC control logic |
Applications
| Test Equipment | Military Radios |
|---|---|
|
Use Scenario: Signal path selection in automated test equipment (ATE) for RF and baseband calibration sequences. IC Role / Device Role / Timing Role: Quad SPST NC switch routing calibrated reference signals to DUT inputs while maintaining isolation between channels. Use Value: 4Ω RON match and 9Ω RFLAT(ON) ensure measurement repeatability across all four channels without correction tables. |
Use Scenario: Antenna and filter bank switching in secure HF/VHF transceivers operating in harsh environmental conditions. IC Role / Device Role / Timing Role: High-reliability analog switch isolating receive/transmit paths and selecting band-specific filters under microcontroller control. Use Value: <5nA off-leakage at +85°C and 2000V ESD rating maintain signal integrity and survivability in mobile field deployments. |
| Sample-and-Hold Circuits | Battery-Operated Systems |
|
Use Scenario: Precision sampling of low-current sensor outputs (e.g., thermocouples, strain gauges) in data acquisition modules. IC Role / Device Role / Timing Role: Low-charge-injection (10pC max) switch connecting sensor to hold capacitor with minimal voltage step error. Use Value: Charge injection spec directly limits hold-step error to ≤1 LSB in 16-bit systems using 10nF hold capacitors. |
Use Scenario: Power domain switching and signal routing in portable medical monitors and handheld test instruments. IC Role / Device Role / Timing Role: Low-power (35µW max) analog switch enabling selective activation of sensor chains and signal paths to extend battery life. Use Value: Ultra-low standby current and guaranteed performance down to -40°C allow reliable operation in unheated outdoor or clinical environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1414BRUZ | Quad SPST, normally open; 1.8Ω typical RON; requires ±15V or +12V single supply; higher bandwidth but no guaranteed RON match spec | Better for low-RON precision muxes where NC function is not required; lacks guaranteed flatness or leakage specs at +85°C | Select ADG1414BRUZ only if normally open topology and sub-2Ω RON outweigh need for matched flatness and high-temp leakage control. |
| TS5A3157DCKR | Single SPDT, 0.75Ω typical RON; +1.65V to +5.5V supply only; 30pC charge injection; rated for 0°C to +70°C only | Targeted at low-voltage portable audio routing; incompatible with bipolar supplies or extended temperature requirements | Choose TS5A3157DCKR only for cost-sensitive, single-channel, 3.3V-only designs where industrial temp range and leakage are non-critical. |
Compared with ADG1414BRUZ and TS5A3157DCKR, DG444DY uniquely combines NC configuration, guaranteed RON matching and flatness, -40°C to +85°C operation, and bipolar supply support - making it irreplaceable in ruggedized test and defense systems requiring channel consistency and thermal reliability.
Availability
DG444DY is available at Aetrix Electronics and suitable for test equipment, military radios, sample-and-hold circuits, battery-operated systems requiring stable component supply, long-term BOM continuity, and traceable sourcing.
Supply support for DG444DY 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
Maxim Integrated (now part of Analog Devices) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and computing markets.
The DG444DY belongs to Maxim's precision analog switch product line, engineered for applications demanding low distortion, tight channel matching, and operation across extreme temperatures and supply configurations.
FAQ
What is the logic configuration of DG444DY?
DG444DY implements four normally closed (NC) SPST analog switches. When logic inputs IN1–IN4 are low, the corresponding D–S paths are closed; when high, they open. This differs from the DG445DY (NO configuration) and is confirmed in the functional diagrams and truth table on page 1 of the datasheet.
Does DG444DY support single-supply operation?
Yes, DG444DY operates from a single +10V to +30V supply. In this mode, connect V− to GND, set VL to +5V for TTL compatibility, and ensure analog signals remain within 0V to V+ − 1V. Performance parameters such as RDS(ON) and leakage are specified for both single- and dual-supply conditions.
What is the maximum analog signal range for DG444DY?
The DG444DY supports a continuous analog signal range of ±15V when operated with bipolar supplies (e.g., V+ = +15V, V− = −15V). With single-supply operation (+12V), the usable range is 0V to +11V. These limits are defined by the absolute maximum ratings and verified in the Electrical Characteristics tables.
Is DG444DY pin-compatible with legacy DG444 devices?
Yes, DG444DY maintains identical pinout and functionality with earlier DG444 variants (e.g., DG444DJ, DG444CY) in the same 16-pin narrow SO package. The "Y" suffix denotes the -40°C to +85°C temperature grade and narrow SO packaging - no layout changes are needed for upgrade.
How is charge injection specified for DG444DY?
DG444DY guarantees ≤10pC maximum charge injection, measured with CL = 1nF, VGEN = 0V, RGEN = 0Ω, and VS = ±10V (Figure 3). This value is tested at +25°C and applies to all four channels - critical for minimizing voltage glitches in sample-and-hold and switched-capacitor circuits.
DG444DY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 85Ohm
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- 5V ~ 36V
- Voltage - Supply, Dual (V±):
- ±5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 250ns, 140ns
- -3db Bandwidth:
- -
- Charge Injection:
- -1pC
- Channel Capacitance (CS(off), CD(off)):
- 4pF, 4pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -100dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
DG444DY FAQ
1.How can I place an order for DG444DY through Aetrix?
Please submit a Request for Quotation (RFQ) for DG444DY 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 DG444DY reliable?
The price and inventory of DG444DY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG444DY is usually 5 days.
3.What payment methods are accepted for DG444DY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG444DY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG444DY?
DG444DY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG444DY 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 DG444DY?
For technical support, including DG444DY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG444DY requirements.
6.How does Aetrix verify that DG444DY is sourced from the original manufacturer or authorized distributors?
All DG444DY 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 DG444DY meets industry standards.
7.What is the process for return or replacement of DG444DY?
All DG444DY units undergo pre-shipment inspection (PSI). If there is an issue with DG444DY, 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 DG444DY part is unused and in its original packaging.
Return procedure for DG444DY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DG444DY Tags
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