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Analog Devices Inc./Maxim Integrated DG418LEUA-T
- Part No.:
- DG418LEUA-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
DG418LEUA-T.pdf
- Description:
- IC SWITCH SPST-NOX1 35OHM 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
DG418LEUA-T from Maxim Integrated is a precision +3V logic-compatible SPST analog switch with normally open (NO) configuration, 35Ω max on-resistance, <5nA off-leakage at +85°C, and rail-to-rail analog signal handling up to ±20V dual or +36V single supply - used in battery-operated audio routing and test equipment signal path control.
For engineers reviewing the DG418LEUA-T datasheet, DG418LEUA-T pinout, DG418LEUA-T application, or DG418LEUA-T equivalent, key selection criteria include guaranteed RON matching (≤3Ω), low charge injection (15pC), sub-185ns tOFF, +0.8V/2.0V logic thresholds, and µMAX-8 package compatibility for space-constrained analog front-ends.
Technical Context
The DG418LEUA-T implements a CMOS transmission-gate architecture optimized for bidirectional analog signal switching with minimal distortion. Its digital input stage accepts TTL/CMOS levels directly without level-shifting, enabling seamless interface with +3V microcontrollers and FPGAs.
It operates across extended temperature (−40°C to +85°C) and supports both single-supply (+9V to +36V) and bipolar-supply (±4.5V to ±20V) configurations. Power-supply sequencing is not required - V+, V−, and logic inputs may power up in any order without latch-up risk.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | 35Ω max at ±15V supplies - ensures minimal signal attenuation and gain error in precision instrumentation paths. |
| RON Matching | ≤3Ω max between channels - critical for matched gain/phase in differential or multiplexed signal chains. |
| Off-Leakage Current | <5nA at +85°C - preserves accuracy in high-impedance sample-and-hold or sensor interfaces. |
| Turn-Off Time (tOFF) | <185ns at ±15V - enables fast channel switching in automated test equipment and data acquisition systems. |
| Logic Thresholds | VIL = 0.8V, VIH = 2.0V - guarantees reliable +3V CMOS/TTL compatibility without external biasing. |
| Analog Signal Range | Rail-to-rail: (V− − 0.3V) to (V+ + 0.3V) - supports full dynamic range utilization in ±15V op-amp circuits. |
| Charge Injection | 15pC - limits voltage glitch on sampled nodes, essential for low-distortion ADC driver applications. |
Pinout & Package
Package: 8-pin µMAX (3mm × 3mm, 0.5mm pitch), thermally enhanced, lead-free, RoHS-compliant surface-mount package rated for −40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 COM | Analog Common Terminal | Signal path junction point - connects to load or source; bidirectional conduction when switch is ON. |
| 2 N.C. | No Connection | Internally unconnected - must be left floating or tied to GND per layout best practice; no electrical function. |
| 3 GND | Logic Ground Reference | Reference for digital input thresholds and internal biasing; separate from analog ground but typically tied at single point. |
| 4 V+ | Positive Analog Supply | Provides upper rail for analog signal swing and powers internal circuitry; must be ≥ |V−| for proper operation. |
| 6 IN | Logic Control Input | +3V-compatible digital input - high (≥2.0V) opens switch (COM–NO), low (≤0.8V) disconnects. |
| 7 V− | Negative Analog Supply | Provides lower rail for bipolar analog signals; enables true rail-to-rail operation with negative excursions. |
| 8 NC | Normally Closed Terminal | Not used in DG418L - this pin is unconnected in DG418LEUA-T; only active in DG417L (NC version) or DG419L (SPDT). |
Key Features
| Feature | Design Value |
|---|---|
| +3V Logic Compatibility | VIH/VIL thresholds (2.0V/0.8V) eliminate need for level shifters when interfacing with modern low-voltage controllers. |
| Power-Supply Sequencing Freedom | No required startup order for V+, V−, or logic inputs - simplifies power management design and improves system robustness. |
| Rail-to-Rail Analog Handling | Supports input signals from V− − 0.3V to V+ + 0.3V - preserves full signal integrity in ±15V industrial and military signal chains. |
| Guaranteed RON Flatness | ≤4Ω variation over full analog range - maintains consistent gain and linearity across signal amplitude extremes. |
| Low Off-Capacitance | 8pF (NO/NC) and 8pF (COM) - minimizes crosstalk and loading in high-frequency multiplexed or RF-adjacent paths. |
Applications
| Audio Signal Routing | Test Equipment Multiplexing |
|---|---|
Use Scenario: Selecting between multiple microphone or line-level inputs in portable audio mixers or voice recorders. IC Role / Device Role / Timing Role: SPST NO analog switch controlling signal path continuity with minimal THD (0.002%) and wide bandwidth. Use Value: Enables clean, low-noise channel selection without audible artifacts or level shifts due to low RON flatness and 15pC charge injection. |
Use Scenario: Automated routing of DUT signals to measurement instruments (oscilloscopes, DMMs) in ATE systems. IC Role / Device Role / Timing Role: High-speed, low-leakage analog switch providing sub-185ns channel reconfiguration under microcontroller control. Use Value: Ensures measurement repeatability via <5nA off-leakage at +85°C and matched RON for calibrated signal path consistency. |
| Battery-Operated Instrumentation | Communications System Signal Switching |
Use Scenario: Power-sensitive data loggers or handheld meters requiring ultra-low quiescent current during sleep mode. IC Role / Device Role / Timing Role: Low-power analog switch with ≤10µA supply current (I+, I−, IGND) across full temperature range. Use Value: Extends battery life while maintaining signal fidelity - enabled by CMOS process and sequencing-free operation. |
Use Scenario: Signal path selection in fax machines, modems, or PBX line cards where analog voice and modem tones coexist. IC Role / Device Role / Timing Role: Bidirectional SPST switch supporting rail-to-rail AC-coupled signals up to 20kHz with 0.002% THD. Use Value: Preserves voice quality and modem handshake reliability via low distortion, high off-isolation (−90dB), and low crosstalk (−86dB). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4618EUA+ | Lower RON (12Ω typ), higher supply current (15µA), same µMAX-8 package and +3V logic compatibility. | Better suited for low-distortion, high-bandwidth audio paths where RON matching is less critical than absolute on-resistance. | Select MAX4618EUA+ when minimizing insertion loss outweighs leakage or power budget constraints. |
| ADG1419BRMZ | SPDT configuration, higher RON (1.3Ω typ), requires 5V logic, wider supply range (±15V to ±22V), 10-lead MSOP package. | Designed for dual-path routing in precision instrumentation; incompatible pinout and logic voltage prevents drop-in replacement. | Choose ADG1419BRMZ only when SPDT functionality and higher voltage tolerance justify PCB redesign. |
Compared with DG418LEUA-T, MAX4618EUA+ delivers lower on-resistance for improved signal fidelity but draws more supply current, while ADG1419BRMZ offers SPDT flexibility at the cost of logic incompatibility and non-interchangeable packaging - making DG418LEUA-T optimal for compact, +3V-controlled SPST routing where leakage and sequencing robustness are prioritized.
Availability
DG418LEUA-T is available at Aetrix Electronics and suitable for battery-operated instrumentation, automated test equipment, and portable audio signal routing requiring stable component supply and long-term lifecycle support.
Supply support for DG418LEUA-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 precision analog, mixed-signal, and power management ICs for industrial, communications, and computing applications - emphasizing performance, integration, and reliability.
The DG418LEUA-T belongs to Maxim's legacy high-performance analog switch family, engineered specifically for low-leakage, low-distortion, and logic-compatible signal routing in demanding environments including military radios and guidance systems.
FAQ
What is the maximum analog signal voltage range supported by the DG418LEUA-T?
The DG418LEUA-T supports analog signals from (V− − 0.3V) to (V+ + 0.3V). With ±15V supplies, this yields a full −15.3V to +15.3V range; with +36V single supply, it supports 0V to +36.3V. This rail-to-rail capability ensures compatibility with standard op-amp output stages and sensor interfaces without clipping.
Does the DG418LEUA-T require specific power-supply sequencing during startup?
No - the DG418LEUA-T features power-supply sequencing-free operation. V+, V−, and logic inputs may power up in any order without risk of latch-up or damage. This eliminates the need for external diodes or sequencing controllers required by older DG417/DG418 devices, simplifying power architecture in portable and ruggedized systems.
What is the guaranteed on-resistance matching specification for the DG418LEUA-T?
The DG418LEUA-T guarantees on-resistance matching of ≤3Ω maximum between units across temperature (−40°C to +85°C). This parameter is measured under identical conditions (V+ = +15V, V− = −15V, ICOM = 10mA, VNO/VNC = ±10V) and ensures consistent channel behavior in matched-pair applications like differential signal switching.
Can the DG418LEUA-T operate from a single +12V supply?
Yes - the DG418LEUA-T supports single-supply operation from +9V to +36V. At +12V, typical on-resistance is 100Ω (max 125Ω), turn-off time is ≤310ns, and off-leakage remains <5nA at +85°C. The device maintains full +3V logic compatibility and rail-to-rail analog handling (0V to +12.3V) in this configuration.
Is the DG418LEUA-T pin-compatible with the original DG418 series?
Yes - the DG418LEUA-T is a direct plug-in upgrade for industry-standard DG418 devices, retaining identical pinout, package footprint (µMAX-8), and functional behavior. Key improvements include lower leakage, sequencing-free operation, and tighter RON matching - all without requiring PCB or firmware changes.
DG418LEUA-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- 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):
- 100mOhm
- Voltage - Supply, Single (V+):
- 9V ~ 36V
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 175ns, 185ns
- -3db Bandwidth:
- -
- Charge Injection:
- 15pC
- Channel Capacitance (CS(off), CD(off)):
- 8pF, 8pF
- Current - Leakage (IS(off)) (Max):
- 250pA
- Crosstalk:
- -86dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-µMAX
DG418LEUA-T FAQ
1.How can I place an order for DG418LEUA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for DG418LEUA-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 DG418LEUA-T reliable?
The price and inventory of DG418LEUA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG418LEUA-T is usually 5 days.
3.What payment methods are accepted for DG418LEUA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG418LEUA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG418LEUA-T?
DG418LEUA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG418LEUA-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 DG418LEUA-T?
For technical support, including DG418LEUA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG418LEUA-T requirements.
6.How does Aetrix verify that DG418LEUA-T is sourced from the original manufacturer or authorized distributors?
All DG418LEUA-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 DG418LEUA-T meets industry standards.
7.What is the process for return or replacement of DG418LEUA-T?
All DG418LEUA-T units undergo pre-shipment inspection (PSI). If there is an issue with DG418LEUA-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 DG418LEUA-T part is unused and in its original packaging.
Return procedure for DG418LEUA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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