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Analog Devices Inc./Maxim Integrated DG419LEUA+
- Part No.:
- DG419LEUA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
DG419LEUA+.pdf
- Description:
- IC SWITCH SPDT X 1 35OHM 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:454
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Product details
Overview
DG419LEUA+ from Maxim Integrated is a precision SPDT analog switch with +3V logic-compatible control, 35Ω max on-resistance, <5nA off-leakage at +85°C, and rail-to-rail analog signal handling up to ±20V or +36V. It operates in battery-powered test equipment and audio routing systems where low charge injection (2.5pC) and guaranteed RON matching (3Ω max) ensure signal integrity.
For engineers reviewing the DG419LEUA+ datasheet, DG419LEUA+ pinout, DG419LEUA+ application, or DG419LEUA+ equivalent, key selection criteria include its break-before-make timing (1ns min), dual- or single-supply flexibility (±4.5V to ±20V / +9V to +36V), and µMAX-8 package compatibility with space-constrained industrial and communications PCBs.
Technical Context
The DG419LEUA+ implements a CMOS transmission-gate architecture enabling bidirectional analog conduction with matched channel characteristics. Its digital input thresholds (VIL = 0.8V, VIH = 2.0V) guarantee direct interface with +3V TTL/CMOS logic without level-shifting circuitry.
It features power-supply sequencing-free operation-unlike legacy DG419-eliminating latch-up risk during V+, V−, or GND ramp-up sequences. The device maintains guaranteed RON flatness (4Ω max over signal range) and low THD (0.002%) across audio and instrumentation bandwidths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | SPDT with one normally closed (NC) and one normally open (NO) path - enables signal path selection without external logic inversion. |
| On-Resistance (RON) | 35Ω max at ±15V supplies - ensures minimal voltage drop and gain error in precision signal chains. |
| RON Matching | 3Ω max between NC and NO channels - critical for differential signal switching and balanced filter designs. |
| Off-Leakage Current | <5nA at +85°C - preserves accuracy in high-impedance sample-and-hold and sensor front-end circuits. |
| Charge Injection | 2.5pC typical (single-supply) - reduces settling error and droop in fast-switching data acquisition systems. |
| Supply Range | +9V to +36V single supply or ±4.5V to ±20V dual supply - supports wide-input-range industrial sensors and legacy ±15V systems. |
| Logic Compatibility | +3V TTL/CMOS with VIL = 0.8V, VIH = 2.0V - interfaces directly with microcontrollers and FPGAs without pull-ups or translators. |
Pinout & Package
Package: 8-pin µMAX (3mm × 3mm, 0.5mm pitch), RoHS-compliant, surface-mount, thermally enhanced for low-power analog applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | COM | Analog common terminal - connects to signal source or load; bidirectional current path shared by NC and NO switches. |
| 2 | NC | Normally closed analog terminal - conducts to COM when IN = logic low; used for default-path routing. |
| 3 | GND | Digital logic ground reference - must be tied to system digital ground; separate from analog ground unless star-point connected. |
| 4 | V+ | Positive analog supply - powers internal switch core; accepts +9V to +36V or +12V in single-supply mode. |
| 5 | N.C. | No connection - internally unconnected; must remain floating or grounded per layout best practices. |
| 6 | IN | Logic-level control input - active-high; drives internal gate driver; compatible with +3V CMOS outputs. |
| 7 | V− | Negative analog supply - required for dual-supply operation (±4.5V to ±20V); tied to GND in single-supply mode. |
| 8 | NO | Normally open analog terminal - conducts to COM when IN = logic high; provides alternate signal path selection. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports signals from V− to V+ - enables full dynamic range utilization in ±15V op-amp circuits and unipolar +36V sensor interfaces. |
| Break-before-make switching | Guaranteed 1ns minimum delay - prevents momentary short-circuit between NC and NO paths during state transitions. |
| Power-supply sequencing freedom | No required V+/V−/GND ramp order - simplifies power management design and eliminates need for external diode protection networks. |
| Low THD (0.002%) | Preserves audio fidelity and measurement linearity - suitable for 20Hz–20kHz signal routing in professional audio and medical instrumentation. |
| Guaranteed RON flatness (4Ω max) | Minimizes harmonic distortion across full analog input range - essential for precision multiplexing in data converters and calibration systems. |
Applications
| Audio Signal Routing | Test Equipment Multiplexing |
|---|---|
Use Scenario: Selecting between microphone preamp outputs and ADC inputs in a multi-channel audio mixer. IC Role / Device Role / Timing Role: SPDT analog switch providing low-distortion, low-crosstalk path selection under microcontroller control. Use Value: 0.002% THD and −86dB crosstalk maintain channel separation and prevent audible artifacts during real-time mixing. |
Use Scenario: Routing DUT signals to multiple measurement instruments (oscilloscope, DMM, spectrum analyzer) in automated test fixtures. IC Role / Device Role / Timing Role: Precision SPDT switch enabling sequential signal access with sub-200ns switching and <5nA leakage. Use Value: 35Ω RON and 3Ω matching minimize measurement offset errors across channels; µMAX-8 footprint saves board space in dense fixture layouts. |
| Battery-Operated Data Loggers | Modem Analog Front-End |
Use Scenario: Switching sensor inputs (thermocouple, RTD, strain gauge) into a shared instrumentation amplifier in portable environmental monitors. IC Role / Device Role / Timing Role: Low-leakage SPDT switch isolating unused sensors to prevent loading and drift during sleep cycles. Use Value: <5nA off-leakage at +85°C ensures stable bias conditions and long-term accuracy in unattended field deployments. |
Use Scenario: Selecting between line interface and handset audio paths in fax/modem ICs requiring clean analog signal handoff. IC Role / Device Role / Timing Role: +3V logic-controlled analog switch managing bidirectional voice/data signal routing with minimal insertion loss. Use Value: 35Ω RON and rail-to-rail operation preserve signal amplitude across 0–3.3V and ±12V modem signal domains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPDT analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4619EUA+ | Lower RON (12Ω typ), higher supply current (100µA), same µMAX-8 package and +3V logic compatibility. | Better suited for low-voltage, high-speed switching where RON dominates SNR; less optimal for ultra-low-power battery systems. | Select MAX4619EUA+ when minimizing on-resistance-induced gain error is prioritized over quiescent current. |
| ADG1419BRMZ | Higher RON (18Ω typ), wider temp range (−40°C to +125°C), SPI-compatible control interface instead of direct logic input. | Preferred in automotive or extended-temp industrial environments requiring digital configuration and fault reporting. | Select ADG1419BRMZ when system-level diagnostics, temperature resilience beyond +85°C, or programmable switching sequences are required. |
Compared with DG419LEUA+, MAX4619EUA+ delivers lower conduction loss but increases standby power, while ADG1419BRMZ trades direct logic control for digital configurability and extended thermal robustness-making each suitable for distinct system-level trade-offs in precision, power, and control architecture.
Availability
DG419LEUA+ is available at Aetrix Electronics and suitable for test equipment multiplexing, battery-operated data loggers, and audio signal routing requiring stable component supply, long-term lifecycle support, and consistent µMAX-8 packaging.
Supply support for DG419LEUA+ 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.
The DG419L series belongs to Maxim's high-fidelity analog switch product line, engineered for low-distortion, low-leakage signal routing in instrumentation, telecom, and audio systems where parameter matching and thermal stability are critical.
FAQ
What is the maximum analog signal voltage range supported by DG419LEUA+?
The DG419LEUA+ supports analog signals from V− to V+ across its full specified supply range: ±4.5V to ±20V in dual-supply mode, or 0V to +36V in single-supply mode. This rail-to-rail capability allows it to handle full-scale signals in ±15V op-amp circuits and high-voltage sensor interfaces without clipping or distortion-confirmed in the Absolute Maximum Ratings and Electrical Characteristics tables of the official Maxim datasheet.
Does DG419LEUA+ require specific power-supply sequencing during startup?
No, DG419LEUA+ does not require controlled power-supply sequencing. Unlike legacy DG419 devices, it features power-supply sequencing-free operation-V+, V−, and GND may power up in any order without risk of latch-up. This is explicitly documented in the Applications Information section and verified by Maxim's absolute maximum ratings structure, which permits independent voltage application within safe limits.
What is the guaranteed on-resistance matching between the NC and NO channels of DG419LEUA+?
The DG419LEUA+ guarantees on-resistance matching of ≤3Ω maximum between its NC and NO channels under all operating conditions (−40°C to +85°C), measured at V+ = +15V, V− = −15V, ICOM = 10mA, and VNO/VNC = ±10V. This specification is explicitly listed in the Electrical Characteristics table and is critical for differential signal integrity and balanced filter applications.
Can DG419LEUA+ operate from a single +12V supply?
Yes, DG419LEUA+ supports single-supply operation from +9V to +36V. At +12V, its on-resistance is 125Ω max (TMIN to TMAX), turn-on time is 400ns max, and off-leakage remains <5nA at +85°C. These parameters are fully characterized in the "Electrical Characteristics-Single +12V Supply" section of the datasheet, confirming reliable functionality in unipolar industrial and battery-powered systems.
What is the charge injection specification for DG419LEUA+, and why does it matter?
DG419LEUA+ specifies 2.5pC typical charge injection under single-supply conditions (V+ = +12V, V− = 0). This low value minimizes voltage step errors at the output of high-impedance nodes-such as sample-and-hold capacitors or sensor amplifiers-reducing settling time and improving DC accuracy. The value is measured per Figure 4 in the datasheet and validated across temperature and supply conditions.
DG419LEUA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- 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):
- -
- -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-uMAX/uSOP
DG419LEUA+ FAQ
1.How can I place an order for DG419LEUA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DG419LEUA+ 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 DG419LEUA+ reliable?
The price and inventory of DG419LEUA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG419LEUA+ is usually 5 days.
3.What payment methods are accepted for DG419LEUA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG419LEUA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG419LEUA+?
DG419LEUA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG419LEUA+ 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 DG419LEUA+?
For technical support, including DG419LEUA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG419LEUA+ requirements.
6.How does Aetrix verify that DG419LEUA+ is sourced from the original manufacturer or authorized distributors?
All DG419LEUA+ 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 DG419LEUA+ meets industry standards.
7.What is the process for return or replacement of DG419LEUA+?
All DG419LEUA+ units undergo pre-shipment inspection (PSI). If there is an issue with DG419LEUA+, 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 DG419LEUA+ part is unused and in its original packaging.
Return procedure for DG419LEUA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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