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Analog Devices Inc./Maxim Integrated DG418LEUA+
- Part No.:
- DG418LEUA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
DG418LEUA+.pdf
- Description:
- IC SWITCH SPST-NOX1 35OHM 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:151
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Product details
Overview
DG418LEUA+ from Maxim Integrated is a precision CMOS single-pole/single-throw (SPST), normally open analog switch optimized for signal routing in battery-powered and rail-to-rail systems. It delivers 35Ω max on-resistance, 3Ω max RON matching between channels, <5nA off-leakage at +85°C, and operates from ±4.5V to ±20V or +9V to +36V supplies - enabling use in audio signal routing, test equipment, and communications systems.
For engineers reviewing the DG418LEUA+ datasheet, DG418LEUA+ pinout, DG418LEUA+ application, or DG418LEUA+ equivalent, key selection criteria include guaranteed RON flatness (4Ω max), +3V logic-compatible inputs (VIL = 0.8V, VIH = 2.0V), sub-185ns tOFF, and µMAX-8 package compatibility with space-constrained industrial and portable designs.
Technical Context
The DG418LEUA+ implements a fully differential CMOS switch architecture with matched P- and N-channel transistor pairs, enabling symmetrical conduction in both directions and rail-to-rail analog signal handling. Its logic interface eliminates need for level-shifting circuitry when driven by +3V TTL/CMOS sources.
Power-supply sequencing independence is achieved via internal biasing that prevents latch-up across arbitrary V+, V−, and GND power-up orders - a critical enhancement over legacy DG418 devices. The device maintains guaranteed leakage and RON performance across −40°C to +85°C without external compensation.
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 switches - enables accurate differential signal switching without channel imbalance |
| RON Flatness | 4Ω max over full signal range - preserves linearity in audio and data-acquisition applications |
| Off-Leakage Current | <5nA at +85°C - prevents DC offset drift in high-impedance sample-and-hold circuits |
| Logic Thresholds | VIL = 0.8V, VIH = 2.0V - direct interface with +3V microcontrollers and FPGAs without pull-ups or translators |
| Switching Times | tON < 175ns, tOFF < 185ns - supports multiplexing of signals up to ~2MHz without timing skew |
| Analog Signal Range | Rail-to-rail: (V− − 0.3V) to (V+ + 0.3V) - accommodates full supply swing without clipping |
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 Switch Common Terminal | Signal path hub - connects to load or source; bidirectional conduction when switch is ON |
| 2 NC | No Connection | Internally unconnected; must be left floating or tied to GND per layout best practice |
| 3 GND | Logic Ground Reference | Reference for digital input thresholds and internal biasing; requires low-impedance connection to system ground plane |
| 4 V+ | Analog Positive Supply Input | Provides high-side voltage rail for analog path; supports up to +44V absolute max |
| 6 IN | Logic-Level Control Input | +3V-compatible digital control: LOW = switch OFF, HIGH = switch ON (NO configuration) |
| 7 V− | Analog Negative Supply Input | Provides low-side voltage rail for analog path; supports down to −44V absolute min |
| 8 NO | Analog Normally Open Terminal | Signal output terminal - connected to COM only when IN = HIGH; isolated otherwise |
Key Features
| Feature | Design Value |
|---|---|
| +3V logic-compatible inputs | VIL ≤ 0.8V and VIH ≥ 2.0V enable direct drive from low-voltage MCUs without level shifters |
| Power-supply sequencing-free operation | No required startup order for V+, V−, or GND - eliminates risk of latch-up in complex power domains |
| Rail-to-rail analog signal handling | Supports input/output signals spanning V− to V+ - essential for full-scale audio and sensor interfaces |
| Low charge injection (15pC typical) | Minimizes voltage glitch on sampled nodes - critical for high-resolution ADC front-ends and S/H circuits |
| Guaranteed leakage & RON over temperature | Specified at −40°C to +85°C - removes need for derating or thermal margining in industrial deployments |
Applications
| Audio Signal Routing | Test Equipment Multiplexing |
|---|---|
Use Scenario: Selecting between multiple microphone or line-level inputs in portable audio mixers and voice recorders. IC Role / Device Role / Timing Role: SPST analog switch controlling signal path integrity and isolation between sources. Use Value: 35Ω RON and 4Ω RON flatness preserve frequency response and channel balance; low charge injection prevents pop/click artifacts. |
Use Scenario: Channel selection in automated test equipment (ATE) for routing DUT signals to measurement instruments. IC Role / Device Role / Timing Role: Precision signal gate enabling fast, repeatable reconfiguration of analog stimulus/response paths. Use Value: Sub-185ns tOFF supports high-throughput testing; <5nA off-leakage ensures measurement accuracy across temperature. |
| Battery-Operated Systems | Communications Systems |
Use Scenario: Power management and signal path enablement in handheld medical monitors and IoT sensors. IC Role / Device Role / Timing Role: Low-quiescent-current analog switch isolating unused subsystems to extend battery life. Use Value: 10µA max supply current and rail-to-rail operation allow direct integration with single-cell Li-ion or dual AA supplies. |
Use Scenario: Signal routing in fax machines, modems, and PBX line cards for analog voice/data channel switching. IC Role / Device Role / Timing Role: High-isolation SPST switch separating transmit/receive paths and preventing crosstalk. Use Value: −90dB off-isolation and −86dB crosstalk meet telecom-grade signal integrity requirements at 1MHz. |
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), but only rated to +70°C; no guaranteed RON matching or flatness specs | Suitable for commercial-temp consumer audio, not extended-temp industrial test gear | Select DG418LEUA+ when guaranteed −40°C to +85°C performance, RON matching, and flatness are required. |
| ADG1419BRMZ | SPDT configuration (NC/NO), higher supply voltage limit (+36V), but 44Ω RON max and no +3V logic guarantee | Requires external level-shifter for +3V control; better for high-voltage industrial I/O than low-distortion audio | Choose DG418LEUA+ for SPST NO topology, guaranteed +3V logic compatibility, and superior THD (0.002%) in audio paths. |
Compared with MAX4618EUA+ and ADG1419BRMZ, the DG418LEUA+ uniquely combines extended temperature rating, guaranteed RON matching/flatness, and native +3V logic support - making it the preferred choice for precision, battery-powered, and thermally demanding analog routing.
Availability
DG418LEUA+ is available at Aetrix Electronics and suitable for audio signal routing, test equipment multiplexing, and battery-operated systems requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for DG418LEUA+ 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 DG418LEUA+ belongs to Maxim's precision analog switch family designed specifically for low-distortion, rail-to-rail signal routing in portable, test, and telecom equipment where +3V logic compatibility and guaranteed parametric performance across temperature are mandatory.
FAQ
What is the maximum supply voltage rating for DG418LEUA+?
The DG418LEUA+ supports dual supplies from ±4.5V to ±20V and single supplies from +9V to +36V. Absolute maximum ratings specify V+ to V− ≤ 44V, with V+ ≤ +44V referenced to V− and GND ≤ +25V referenced to V−. Exceeding these limits risks permanent damage.
Does DG418LEUA+ require specific power-up sequencing?
No. The DG418LEUA+ features power-supply sequencing-free operation - V+, V−, and GND may power up in any order without latch-up risk. This is a key reliability improvement over legacy DG418 devices and simplifies power domain design in multi-rail systems.
What is the guaranteed on-resistance flatness specification for DG418LEUA+?
The DG418LEUA+ guarantees on-resistance flatness of 4Ω maximum over the full analog signal range (V− to V+) at temperatures from −40°C to +85°C. This ensures consistent gain and linearity across the signal swing - critical for audio and data acquisition applications.
Can DG418LEUA+ operate with a single +12V supply?
Yes. The DG418LEUA+ is fully specified for single-supply operation from +9V to +36V. At +12V, typical RON is 100Ω (max 125Ω), tON < 300ns, and off-leakage remains <5nA at +85°C - enabling use in cost-sensitive, single-rail industrial controls and instrumentation.
Is DG418LEUA+ pin-compatible with the legacy DG418?
No. While functionally similar, DG418LEUA+ uses an updated µMAX-8 package with different pinout: Pin 2 and Pin 5 are N.C., whereas legacy DG418 assigns Pin 2 to NO and Pin 5 to NC. Layout redesign is required; refer to the official DG418LEUA+ pin description table for correct routing.
DG418LEUA+ 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):
- 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:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uMAX/uSOP
DG418LEUA+ FAQ
1.How can I place an order for DG418LEUA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DG418LEUA+ 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+ reliable?
The price and inventory of DG418LEUA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG418LEUA+ is usually 5 days.
3.What payment methods are accepted for DG418LEUA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG418LEUA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG418LEUA+?
DG418LEUA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG418LEUA+ 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+?
For technical support, including DG418LEUA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG418LEUA+ requirements.
6.How does Aetrix verify that DG418LEUA+ is sourced from the original manufacturer or authorized distributors?
All DG418LEUA+ 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+ meets industry standards.
7.What is the process for return or replacement of DG418LEUA+?
All DG418LEUA+ units undergo pre-shipment inspection (PSI). If there is an issue with DG418LEUA+, 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+ part is unused and in its original packaging.
Return procedure for DG418LEUA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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