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Analog Devices Inc./Maxim Integrated DG418DY+
- Part No.:
- DG418DY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG418DY+.pdf
- Description:
- IC SWITCH SPST-NOX1 35OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,091
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Product details
Overview
DG418DY+ from Maxim Integrated is a precision CMOS single-pole/single-throw (SPST) analog switch with normally open configuration, 35Ω max on-resistance, <5nA off-leakage at +85°C, and guaranteed 3Ω max on-resistance matching between channels - used in battery-operated systems and audio signal routing where rail-to-rail analog handling and low charge injection (10pC max) are critical.
For engineers reviewing the DG418DY+ datasheet, DG418DY+ pinout, DG418DY+ application, or DG418DY+ equivalent, key selection criteria include bipolar ±4.5V to ±20V or single +10V to +30V operation, TTL/CMOS logic compatibility, 175ns max tON, and SO-8 package suitability for space-constrained industrial and communications PCBs.
Technical Context
The DG418DY+ implements a silicon-gate 44V process enabling robust rail-to-rail analog signal switching across ±20V or +30V supplies. Its SPST NO topology uses a single logic-controlled channel with complementary MOSFET pairs to achieve symmetrical conduction and sub-10pC charge injection.
Guaranteed on-resistance flatness (4Ω max over full signal range) and matched RDS(ON) (3Ω max) are specified only under bipolar-supply operation, while leakage performance (<5nA at +85°C) and ESD tolerance (2000V min per Method 3015.7) are validated across the -40°C to +85°C temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | SPST, normally open - enables controlled signal path activation without default continuity |
| RDS(ON) Max | 35Ω at +25°C - ensures minimal voltage drop and power loss in precision analog paths |
| tON / tOFF Max | 175ns / 145ns - supports high-speed multiplexing in test equipment and modems |
| Charge Injection | 10pC max - reduces sampling error in sample-and-hold circuits and ADC front-ends |
| Off-Leakage Current | <5nA at +85°C - maintains signal integrity in high-impedance sensor interfaces |
| Supply Range | Bipolar ±4.5V to ±20V or single +10V to +30V - accommodates wide industrial and military power architectures |
| ESD Tolerance | 2000V min per Method 3015.7 - enhances reliability during handling and system integration |
Pinout & Package
Package: 8-pin SO (Small Outline), surface-mount, RoHS-compliant, JEDEC MS-012 variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Analog Drain (D) | Signal output terminal; connects to load or downstream circuit when switch is ON |
| 2 | No Internal Connection (N.C.) | Unbonded pad; must be left floating or grounded per layout best practices |
| 3 | GND | Logic ground reference; decoupling capacitor required near pin for noise immunity |
| 4 | V+ | Analog positive supply input; must be ≥ |V−| + 1V for proper biasing in bipolar mode |
| 5 | VL | Logic supply input; set to +5V for TTL compatibility or tied to V+ for CMOS-level inputs |
| 6 | IN | Active-high logic control input; drives internal gate drivers to turn switch ON/OFF |
| 7 | V− | Analog negative supply input; required for bipolar operation; connect to 0V for single-supply use |
| 8 | Analog Source (S) | Signal input terminal; bidirectional conduction allows S↔D current flow when enabled |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed RDS(ON) match | 3Ω max between channels - enables precise gain-matching in dual-path instrumentation |
| Rail-to-rail signal handling | Supports analog signals from V− to V+ - eliminates clipping in ±15V op-amp interfaces |
| TTL/CMOS logic compatibility | Accepts 0.8V/2.4V thresholds - simplifies interface with microcontrollers and FPGAs |
| Low power consumption | 35µW max - extends battery life in portable test gear and fax machines |
| Improved off-leakage over temperature | <5nA at +85°C - preserves accuracy in guidance and control systems operating in harsh environments |
Applications
| Sample-and-Hold Circuits | Audio Signal Routing |
|---|---|
Use Scenario: Capturing fast-changing sensor outputs in data acquisition systems with minimal droop between sampling intervals. IC Role / Device Role / Timing Role: Precision analog switch controlling hold capacitor connection; timing-critical path for aperture time and settling. Use Value: 10pC max charge injection and 4Ω max RFLAT(ON) ensure ≤0.01% sampling error in 12-bit+ systems. |
Use Scenario: Dynamic reconfiguration of microphone/line inputs and speaker/headphone outputs in professional audio mixers. IC Role / Device Role / Timing Role: Bidirectional SPST switch isolating signal paths; role defined by logic state, not directionality. Use Value: 35Ω RDS(ON) and rail-to-rail operation preserve dynamic range across ±12V audio rails without level-shifting. |
| Test Equipment | Battery-Operated Systems |
Use Scenario: Automated signal path selection in multichannel oscilloscopes and function generators requiring nanosecond switching fidelity. IC Role / Device Role / Timing Role: High-speed analog multiplexer element; tON/tOFF specs directly impact channel switching latency. Use Value: 175ns tON and 145ns tOFF enable ≤1MHz scan rates across 8-channel configurations with minimal crosstalk. |
Use Scenario: Power management and sensor interface control in handheld medical devices and portable environmental monitors. IC Role / Device Role / Timing Role: Low-quiescent-power signal gate; operates from single +12V or ±9V battery stacks. Use Value: 35µW max power and <5nA leakage at +85°C extend runtime and maintain calibration stability over temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1418BRMZ | 44V supply rating, 4.7Ω RDS(ON), but requires VL = V+ for logic compatibility; no guaranteed RDS(ON) match spec | Higher precision in low-RDS(ON) apps, but lacks guaranteed matching and flatness specs critical for metrology | Select ADG1418BRMZ only if lower on-resistance outweighs need for channel matching in non-differential designs |
| TS5A23157DCUR | Single-supply only (+1.65V to +5.5V), 0.9Ω RDS(ON), but limited to 5.5V max analog range and no bipolar support | Suitable for low-voltage portable audio, but cannot replace DG418DY+ in ±15V test or industrial signal chains | Choose TS5A23157DCUR for cost-sensitive, low-voltage consumer audio; avoid for industrial or bipolar-rail designs |
Compared with ADG1418BRMZ and TS5A23157DCUR, the DG418DY+ uniquely delivers guaranteed on-resistance matching (3Ω), bipolar supply flexibility, and validated 2000V ESD tolerance - making it irreplaceable in military radios, PBX systems, and high-reliability sample-and-hold implementations where parameter correlation across temperature and voltage is mandatory.
Availability
DG418DY+ is available at Aetrix Electronics and suitable for battery-operated systems, audio signal routing, and test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for DG418DY+ 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 DG418DY+ belongs to Maxim's precision analog switch product line, designed specifically for applications demanding guaranteed parametric correlation - such as instrumentation, military comms, and automated test equipment - where channel matching and temperature-stable leakage are non-negotiable.
FAQ
What is the maximum allowable supply voltage for DG418DY+?
The DG418DY+ supports absolute maximum ratings of V+ ≤ 44V referenced to V−, with operational ranges of ±4.5V to ±20V (bipolar) or +10V to +30V (single supply). Exceeding these limits risks permanent damage. For reliable long-term operation, stay within the specified dual-supply range and observe proper sequencing: V+ first, then VL, V−, and logic inputs.
Does DG418DY+ support rail-to-rail analog signal switching?
Yes, the DG418DY+ supports true rail-to-rail analog signal handling from V− to V+, verified across its full operating temperature range (-40°C to +85°C). This capability is enabled by its silicon-gate 44V process and complementary MOSFET architecture, allowing undistorted passage of signals spanning the entire supply rails - essential in ±15V op-amp and data acquisition interfaces.
What is the logic-compatible voltage range for the IN pin of DG418DY+?
The IN pin of DG418DY+ accepts TTL/CMOS logic levels: VINL ≤ 0.8V (logic low) and VINH ≥ 2.4V (logic high), with VL supplied at +5V. When VL is tied to V+, the device accepts CMOS-level inputs referenced to V+. Input current remains below ±0.5µA across temperature, ensuring compatibility with low-drive microcontrollers and FPGA I/O banks without external buffering.
How does DG418DY+ perform in terms of off-isolation and crosstalk?
The DG418DY+ achieves 68dB off-isolation rejection ratio (OIRR) and - as a single-pole device - has no crosstalk specification (crosstalk applies only to multi-channel switches like DG419). Its 68dB OIRR, measured at 1MHz with RL = 500Ω and CL = 5pF, ensures >2000:1 attenuation of off-state signals - critical in sensitive receiver front-ends and high-density multiplexers where signal bleed must be minimized.
Is DG418DY+ pin-compatible with legacy DG418 variants?
Yes, DG418DY+ is a direct plug-in upgrade for all industry-standard DG418 variants in SO-8 and PDIP-8 packages, including DG418DJ and DG418CY. Pinout, footprint, and logic behavior are identical; improvements - including guaranteed RDS(ON) matching, lower leakage, and enhanced ESD tolerance - require no PCB or firmware changes. Full backward compatibility is confirmed in Maxim's 19-0114 Rev 2 datasheet.
DG418DY+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 35Ohm
- Channel-to-Channel Matching (ΔRon):
- 3Ohm (Max)
- Voltage - Supply, Single (V+):
- 10V ~ 30V
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 175ns, 145ns
- -3db Bandwidth:
- -
- Charge Injection:
- 3pC
- Channel Capacitance (CS(off), CD(off)):
- 8pF, 8pF
- Current - Leakage (IS(off)) (Max):
- 250pA
- Crosstalk:
- -85dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
DG418DY+ FAQ
1.How can I place an order for DG418DY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DG418DY+ 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 DG418DY+ reliable?
The price and inventory of DG418DY+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG418DY+ is usually 5 days.
3.What payment methods are accepted for DG418DY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG418DY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG418DY+?
DG418DY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG418DY+ 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 DG418DY+?
For technical support, including DG418DY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG418DY+ requirements.
6.How does Aetrix verify that DG418DY+ is sourced from the original manufacturer or authorized distributors?
All DG418DY+ 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 DG418DY+ meets industry standards.
7.What is the process for return or replacement of DG418DY+?
All DG418DY+ units undergo pre-shipment inspection (PSI). If there is an issue with DG418DY+, 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 DG418DY+ part is unused and in its original packaging.
Return procedure for DG418DY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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