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Analog Devices Inc./Maxim Integrated DG419LEUA+T
- Part No.:
- DG419LEUA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
DG419LEUA+T.pdf
- Description:
- IC SWITCH SPDT X 1 35OHM 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:5,638
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Product details
Overview
DG419LEUA+T from Maxim Integrated is a precision CMOS single-pole/double-throw (SPDT) analog switch with 35Ω max on-resistance, ±4.5V to ±20V or +9V to +36V supply operation, and +3V logic-compatible digital inputs (VIH = 2.0V, VIL = 0.8V). It features rail-to-rail analog signal handling, <5nA off-leakage at +85°C, and is used in audio routing, test equipment, and battery-operated communications systems.
For engineers reviewing the DG419LEUA+T datasheet, DG419LEUA+T pinout, DG419LEUA+T application, or DG419LEUA+T equivalent, key selection criteria include guaranteed RON matching (≤3Ω), break-before-make timing (≤1ns), low charge injection (15pC), and µMAX-8 package compatibility for space-constrained designs.
Technical Context
The DG419LEUA+T implements a CMOS transmission-gate architecture enabling bidirectional analog conduction with matched channel characteristics. Its logic interface operates independently of supply sequencing-no VL bias required-and supports both single- and dual-supply configurations without latch-up risk.
It delivers guaranteed RON flatness ≤4Ω over full signal range and maintains <5nA off-leakage across –40°C to +85°C. The SPDT topology integrates one normally closed (NC) and one normally open (NO) path referenced to a common (COM) terminal, with transition time <185ns and break-before-make delay ≤1ns under standard load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | 35Ω max at ±15V supplies - ensures minimal signal attenuation and voltage drop in precision signal paths |
| RON Matching (∆RON) | 3Ω max between NC/NO channels - enables accurate differential or ratiometric measurements |
| RON Flatness | 4Ω max over signal range - preserves linearity and THD <0.002% in audio and instrumentation |
| Off-Leakage Current | <5nA at +85°C - critical for high-impedance sample-and-hold and sensor front-ends |
| Logic Thresholds | VIH = 2.0V, VIL = 0.8V - ensures reliable TTL/CMOS interfacing with +3V microcontrollers |
| Supply Range | ±4.5V to ±20V or +9V to +36V - supports industrial, military, and wide-range battery-powered systems |
| Switching Time (tON/tOFF) | <175ns / <185ns - suitable for multiplexing up to ~3MHz signals in data acquisition |
Pinout & Package
Package: 8-pin µMAX (3mm × 3mm, 0.5mm pitch), rated for –40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 COM | Analog Common Terminal | Signal path shared by both NC and NO switches; must be connected to source or load |
| 2 NC | Normally Closed Terminal | Conducts to COM when IN = logic low; default path in unpowered or inactive state |
| 3 GND | Logic Ground Reference | Reference for digital input thresholds; separate from analog supply grounds per layout best practice |
| 4 V+ | Positive Analog Supply | Bias for internal CMOS switches; sets upper analog signal limit (up to V+ – 0.3V) |
| 5 N.C. | No Connection | Internally unconnected; must remain floating or tied to GND per PCB design rules |
| 6 IN | Digital Control Input | +3V-compatible logic input; active-high control toggles between NC and NO paths |
| 7 V− | Negative Analog Supply | Bias for internal CMOS switches; sets lower analog signal limit (down to V− + 0.3V) |
| 8 NO | Normally Open Terminal | Conducts to COM only when IN = logic high; provides break-before-make isolation |
Key Features
| Feature | Design Value |
|---|---|
| +3V logic compatibility | VIH/VIL thresholds (2.0V/0.8V) enable direct interface with low-voltage MCUs without level-shifting |
| Power-supply sequencing freedom | No VL pin or strict V+/V−/GND power-up order required - eliminates external diode protection circuits |
| Rail-to-rail analog handling | Supports signals from V− + 0.3V to V+ − 0.3V - preserves full dynamic range in ±15V or +12V systems |
| Low charge injection (15pC) | Minimizes voltage glitch on sampled capacitors - essential for high-resolution ADC front-ends |
| Guaranteed RON matching (≤3Ω) | Enables precise gain-matching in dual-path instrumentation and balanced signal routing |
| µMAX-8 package | 3mm × 3mm footprint saves >60% board area vs. SO-8 - ideal for portable test gear and compact modems |
Applications
| Audio Signal Routing | Test Equipment Multiplexing |
|---|---|
Use Scenario: Switching line-level stereo signals between multiple DAC outputs and headphone amplifiers in portable audio devices. IC Role / Device Role / Timing Role: SPDT analog switch selecting between two independent audio sources while maintaining channel separation and low THD. Use Value: 0.002% THD and <15pC charge injection prevent audible artifacts; µMAX-8 enables integration into space-limited handheld form factors. |
Use Scenario: Routing calibrated reference voltages and DUT signals in automated test equipment (ATE) with 16-channel scan cards. IC Role / Device Role / Timing Role: Precision SPDT switch providing low-RON, matched-path signal selection for metrology-grade voltage measurement paths. Use Value: ≤3Ω RON matching and <5nA off-leakage ensure measurement accuracy stability across temperature and channel count. |
| Battery-Operated Modems | Military Radio Front-Ends |
Use Scenario: Managing analog signal paths (FXS/FXO, codec interfaces) in low-power DSL/fax modems powered by 3.7V Li-ion batteries. IC Role / Device Role / Timing Role: Low-quiescent-current analog switch enabling power-gating of unused signal chains during sleep mode. Use Value: <10µA supply current and +9V to +36V single-supply operation extend battery life while supporting legacy telecom voltage rails. |
Use Scenario: Selecting between primary and backup RF receive paths in ruggedized HF/VHF radios operating in –40°C to +85°C environments. IC Role / Device Role / Timing Role: High-reliability SPDT switch providing fail-safe signal routing with guaranteed performance across extended temperature range. Use Value: Extended temp rating, ±20V dual-supply support, and <5nA leakage at +85°C ensure uninterrupted operation in harsh field conditions. |
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 (15Ω), higher supply current (100µA), same µMAX-8 package and logic thresholds | Better for low-distortion audio; less suitable for ultra-low-power battery systems | Select MAX4619EUA+ when RON <20Ω is mandatory and supply current budget allows ≥10× increase |
| ADG1419BRMZ | Higher voltage rating (±25V), 1.8V logic compatible, but larger MSOP-10 package and no extended-temp guarantee | Preferred for mixed-signal ASIC interfaces with 1.8V I/O; not drop-in for existing µMAX-8 layouts | Choose ADG1419BRMZ only if 1.8V logic compatibility or ±25V operation is required and board rework is acceptable |
Compared with DG419LEUA+T, MAX4619EUA+ improves on-resistance at the cost of quiescent power, while ADG1419BRMZ adds 1.8V logic support and higher voltage tolerance but requires PCB redesign due to package and pinout differences.
Availability
DG419LEUA+T is available at Aetrix Electronics and suitable for audio signal routing, test equipment multiplexing, and battery-operated modems requiring stable component supply, long-term lifecycle assurance, and extended temperature compliance.
Supply support for DG419LEUA+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) 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 DG419LEUA+T belongs to Maxim's precision analog switch product line, designed specifically for applications demanding low on-resistance matching, rail-to-rail signal handling, and robust operation across extended temperature and supply ranges.
FAQ
What is the maximum analog signal voltage range supported by DG419LEUA+T?
DG419LEUA+T supports analog signals from (V− + 0.3V) to (V+ − 0.3V). With ±15V supplies, this yields a ±14.7V range; with +12V single supply (V− = 0), it supports 0.3V to 11.7V. This rail-to-rail capability ensures full utilization of input dynamic range in both bipolar and unipolar systems.
Does DG419LEUA+T require specific power-supply sequencing during startup?
No. DG419LEUA+T eliminates the need for controlled power-up sequences (e.g., V+ before V−) required by legacy DG419 devices. Its internal architecture prevents latch-up regardless of supply ramp order, simplifying system power design and removing the need for external protection diodes.
Can DG419LEUA+T be used with +3.3V logic controllers without level shifting?
Yes. DG419LEUA+T has VIH = 2.0V and VIL = 0.8V, making it fully compatible with +3.3V CMOS and TTL logic outputs. A 3.3V logic high exceeds the 2.0V threshold, and a 3.3V logic low stays well below the 0.8V threshold - no external level translation is needed.
What is the typical charge injection value for DG419LEUA+T, and why does it matter?
DG419LEUA+T specifies 15pC typical charge injection. This parameter quantifies the transient voltage glitch injected onto the COM node during switching. In sample-and-hold or switched-capacitor circuits, low charge injection (<25pC) prevents settling errors and preserves DC accuracy - critical for 12-bit+ data acquisition systems.
Is DG419LEUA+T pin-compatible with the older DG419 series?
Yes - DG419LEUA+T is a direct replacement for DG419 in µMAX-8 packages, sharing identical pinout, electrical behavior, and footprint. Key improvements include enhanced RON matching, lower leakage, and elimination of power-sequencing constraints, all while maintaining backward compatibility in existing designs.
DG419LEUA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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+T FAQ
1.How can I place an order for DG419LEUA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for DG419LEUA+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 DG419LEUA+T reliable?
The price and inventory of DG419LEUA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG419LEUA+T is usually 5 days.
3.What payment methods are accepted for DG419LEUA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG419LEUA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG419LEUA+T?
DG419LEUA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG419LEUA+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 DG419LEUA+T?
For technical support, including DG419LEUA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG419LEUA+T requirements.
6.How does Aetrix verify that DG419LEUA+T is sourced from the original manufacturer or authorized distributors?
All DG419LEUA+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 DG419LEUA+T meets industry standards.
7.What is the process for return or replacement of DG419LEUA+T?
All DG419LEUA+T units undergo pre-shipment inspection (PSI). If there is an issue with DG419LEUA+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 DG419LEUA+T part is unused and in its original packaging.
Return procedure for DG419LEUA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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