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Analog Devices Inc./Maxim Integrated DG444DY+T
- Part No.:
- DG444DY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG444DY+T.pdf
- Description:
- IC SWITCH SPST-NCX4 85OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,829
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Product details
Overview
DG444DY+T from Maxim Integrated is a quad, normally closed (NC), single-pole/single-throw (SPST) analog switch IC designed for precision signal routing in bipolar and single-supply systems. It features 85Ω max on-resistance, <5nA off-leakage at +85°C, 10pC max charge injection, rail-to-rail analog signal handling (±15V), and TTL/CMOS-compatible logic inputs. It is used in test equipment, audio signal routing, and military radios requiring low distortion and high channel-to-channel matching.
For engineers reviewing the DG444DY+T datasheet, DG444DY+T pinout, DG444DY+T application, or DG444DY+T equivalent, key selection criteria include guaranteed on-resistance flatness (9Ω max), bipolar supply operation (±4.5V to ±20V), low power consumption (35µW max), ESD tolerance (2000V min), and -40°C to +85°C industrial temperature rating.
Technical Context
The DG444DY+T implements four independent NC SPST switches fabricated using a 44V silicon-gate process, enabling robust operation across wide supply ranges. Its architecture guarantees matched on-resistance (4Ω max) and flat on-resistance (9Ω max) over the full analog signal range under bipolar supplies - critical for precision multiplexing and sample-and-hold circuits.
Switching is controlled by active-low logic inputs referenced to VL (5V), with separate V+ and V− rails defining the analog signal swing. The device supports unbalanced supplies (e.g., +24V/−5V), maintains rail-to-rail signal integrity, and exhibits minimal charge injection (10pC max) - essential for low-glitch data acquisition and battery-operated systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RDS(ON)) | 85Ω max at ±15V supplies - ensures minimal signal attenuation and gain error in precision analog paths |
| On-Resistance Matching | 4Ω max between channels - enables accurate differential signal switching without channel skew |
| Charge Injection | 10pC max - limits voltage glitch in sample-and-hold and ADC front-end applications |
| Off-Leakage Current | <5nA at +85°C - preserves signal integrity in high-impedance sensor interfaces |
| Analog Signal Range | ±15V - supports full rail-to-rail operation with bipolar supplies, ideal for industrial instrumentation |
| Supply Range | Bipolar ±4.5V to ±20V or single +10V to +30V - provides design flexibility across legacy and modern power architectures |
| ESD Tolerance | 2000V min per Method 3015.7 - enhances reliability in handling-sensitive production and field environments |
Pinout & Package
Package: 16-pin narrow SO (SOIC-16), 150 mil width, RoHS-compliant, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1–IN4 | Logic control inputs | Active-low enables; drive with 0.8V/2.4V TTL thresholds; referenced to VL |
| D1–D4 | Drain terminals | Switch output nodes; connect to load or downstream circuitry |
| S1–S4 | Source terminals | Switch input nodes; normally connected to signal source in NC configuration |
| V+ | Positive supply rail | Bias for analog path and substrate; must be ≥ |V−| to maintain 44V max differential |
| V− | Negative supply rail | Defines lower analog rail; clamps signals below V− via internal diodes |
| GND | Ground reference | Logic ground return; isolated from analog signal path but tied to system common |
| VL | Logic supply voltage | Set to 5V for TTL compatibility or to V+ for CMOS-level inputs |
Key Features
| Feature | Design Value |
|---|---|
| Normally closed (NC) topology | Ensures fail-safe signal continuity during power loss - critical in safety-critical guidance systems |
| Guaranteed RFLAT(ON) | 9Ω max over ±15V signal range - eliminates amplitude distortion across full input swing |
| Low temperature drift leakage | <5nA at +85°C - maintains accuracy in extended-temperature industrial deployments |
| Rail-to-rail analog handling | Supports ±15V signals with no clipping - enables direct interface with op-amp outputs and DACs |
| TTL/CMOS logic compatibility | Accepts standard 5V logic levels without level-shifting - simplifies integration with microcontrollers and FPGAs |
Applications
| Test Equipment | Audio Signal Routing |
|---|---|
Use Scenario: Automated test systems switching calibration references and DUT signals across multiple channels. IC Role / Device Role / Timing Role: Quad NC SPST switch providing low-distortion, low-leakage signal path selection under software control. Use Value: 4Ω max RON match ensures consistent gain scaling across channels; 10pC charge injection prevents settling errors in precision DC measurements. | Use Scenario: Professional audio mixers routing line-level analog signals between inputs, effects loops, and outputs. IC Role / Device Role / Timing Role: Analog signal gate managing channel mute, solo, and patchbay reconfiguration. Use Value: Rail-to-rail ±15V capability handles pro-audio signal swings; <5nA off-leakage avoids audible pop/click during switching. |
| Military Radios | Sample-and-Hold Circuits |
Use Scenario: RF front-end protection and antenna switching in ruggedized HF/VHF transceivers operating across -40°C to +85°C. IC Role / Device Role / Timing Role: High-reliability analog switch isolating sensitive receiver stages from transmit bursts and ESD events. Use Value: 2000V ESD rating meets MIL-STD-883H Class 3B; 44V process withstands transient overvoltage in harsh EM environments. | Use Scenario: Precision data acquisition systems capturing fast analog waveforms before ADC conversion. IC Role / Device Role / Timing Role: Low-glitch switch controlling hold capacitor charging in monolithic S/H amplifiers. Use Value: 10pC max charge injection minimizes hold-step error; sub-250ns tON enables >1MHz sampling rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG444BRZ | Quad NC SPST; 75Ω max RDS(ON); −40°C to +85°C; SOIC-16; 10pC charge injection | Lower on-resistance but higher off-leakage (>10nA at +85°C); no guaranteed RFLAT(ON) | Preferred where lower RON outweighs leakage sensitivity; requires verification of flatness in signal-path-critical designs |
| TS5A4624DCKR | Quad NC SPST; 0.7Ω typical RDS(ON); +1.8V to +5.5V only; SC70-16; 15pC charge injection | Single-supply only; not rated for ±15V analog swing; unsuitable for bipolar industrial/military use | Valid only for low-voltage, battery-powered portable gear; cannot replace DG444DY+T in high-voltage or extended-temp applications |
Compared with ADG444BRZ and TS5A4624DCKR, the DG444DY+T uniquely delivers guaranteed on-resistance flatness (9Ω max) and <5nA off-leakage at +85°C within a 44V process - making it the only option qualified for precision, high-reliability, bipolar-supply analog routing where signal fidelity and thermal stability are non-negotiable.
Availability
DG444DY+T is available at Aetrix Electronics and suitable for test equipment, audio signal routing, and military radio systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for DG444DY+T 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) designs high-performance analog, mixed-signal, and power management ICs for industrial, communications, and automotive markets.
The DG444DY+T belongs to Maxim's precision analog switch family, engineered specifically for applications demanding low distortion, high channel matching, and robust operation under bipolar supplies and extended temperatures.
FAQ
What is the maximum analog signal voltage range supported by the DG444DY+T?
The DG444DY+T supports an analog signal range of ±15V when operated from bipolar ±15V supplies. This rail-to-rail capability allows full-swing signal handling without clipping, making it suitable for industrial instrumentation and professional audio interfaces. Operation outside this range violates absolute maximum ratings and risks permanent damage.
Is the DG444DY+T pin-compatible with the original DG444 series?
Yes, the DG444DY+T is a drop-in replacement for legacy DG444 variants in the same 16-pin narrow SO package. Pin functions, layout, and electrical behavior are identical - including IN1–IN4, D1–D4, S1–S4, V+, V−, GND, and VL assignments. No PCB changes are required when upgrading to the improved DG444DY+T.
Does the DG444DY+T require external pull-up resistors on its logic inputs?
No, the DG444DY+T does not require external pull-up resistors. Its logic inputs (IN1–IN4) are TTL/CMOS-compatible with defined thresholds (VINL ≤ 0.8V, VINH ≥ 2.4V) and exhibit low input current (±0.5µA max). Driving directly from microcontroller GPIO or FPGA outputs is fully supported without additional biasing components.
What is the typical turn-on time for the DG444DY+T under ±15V supplies?
Under ±15V bipolar supplies, the DG444DY+T has a typical turn-on time (tON) of 150ns and a maximum of 250ns. This specification is measured with CL = 5pF and RL = 50Ω, and applies across the full industrial temperature range (−40°C to +85°C), ensuring predictable timing in real-time signal routing applications.
Can the DG444DY+T operate with unbalanced supplies such as +24V and −5V?
Yes, the DG444DY+T supports unbalanced supplies like +24V and −5V, provided the differential voltage (V+ − V−) does not exceed 44V and each rail stays within absolute maximum ratings. This flexibility enables integration into legacy systems with asymmetric power domains while maintaining full analog signal range and switching performance.
DG444DY+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- 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):
- 85Ohm
- Channel-to-Channel Matching (ΔRon):
- 4Ohm (Max)
- Voltage - Supply, Single (V+):
- 10V ~ 30V
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 250ns, 140ns
- -3db Bandwidth:
- -
- Charge Injection:
- 5pC
- 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+T FAQ
1.How can I place an order for DG444DY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for DG444DY+T 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+T reliable?
The price and inventory of DG444DY+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG444DY+T is usually 5 days.
3.What payment methods are accepted for DG444DY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG444DY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG444DY+T?
DG444DY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG444DY+T 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+T?
For technical support, including DG444DY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG444DY+T requirements.
6.How does Aetrix verify that DG444DY+T is sourced from the original manufacturer or authorized distributors?
All DG444DY+T 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+T meets industry standards.
7.What is the process for return or replacement of DG444DY+T?
All DG444DY+T units undergo pre-shipment inspection (PSI). If there is an issue with DG444DY+T, 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+T part is unused and in its original packaging.
Return procedure for DG444DY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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