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Analog Devices Inc./Maxim Integrated DG419LDJ
- Part No.:
- DG419LDJ
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
DG419LDJ.pdf
- Description:
- IC SWITCH SPDT X 1 35OHM 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,213
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Product details
Overview
DG419LDJ from Maxim Integrated is a precision SPDT analog switch IC designed for bidirectional signal routing in ±15V or +12V systems, featuring 35Ω max on-resistance, <5nA off-leakage at +85°C, and +3V logic-compatible control (VIH = 2.0V, VIL = 0.8V). It operates across -40°C to +85°C and supports rail-to-rail analog signals up to ±15V or +36V single supply - ideal for audio routing and test equipment front-ends.
For engineers reviewing the DG419LDJ datasheet, DG419LDJ pinout, DG419LDJ application, or DG419LDJ equivalent, key selection criteria include guaranteed RON matching (≤3Ω), break-before-make timing (≤1ns), low charge injection (15pC), and compatibility with legacy DG419 footprints in 8-pin plastic DIP packaging.
Technical Context
The DG419LDJ implements a CMOS transmission-gate architecture with dual-supply biasing, enabling symmetric conduction and rail-to-rail analog handling. Its digital input stage uses threshold-limited TTL/CMOS-compliant switching without level-shifting circuitry, allowing direct interface with +3V microcontrollers.
It guarantees matched on-resistance between NC and NO channels (ΔRON ≤ 3Ω) and flat on-resistance over signal range (RFLAT ≤ 4Ω), critical for precision multiplexing in sample-and-hold and instrumentation amplifier front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | SPDT with one normally closed (NC) and one normally open (NO) channel |
| On-Resistance (RON) | 35Ω max at ±15V supplies - ensures minimal signal attenuation in precision analog paths |
| RON Matching (ΔRON) | 3Ω max between NC and NO channels - enables accurate differential signal switching |
| Off-Leakage Current | <5nA at +85°C - preserves accuracy in high-impedance sample-and-hold nodes |
| Logic Compatibility | +3V TTL/CMOS: VIH = 2.0V, VIL = 0.8V - eliminates need for external level shifters |
| Supply Range | ±4.5V to ±20V dual or +9V to +36V single - supports industrial and battery-backed systems |
| Turn-On/Off Time | tON < 175ns, tOFF < 185ns (RL = 300Ω, CL = 35pF) - suitable for medium-speed data acquisition |
Pinout & Package
Package: 8-pin plastic DIP (dual in-line package), through-hole mount, rated for -40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | COM | Analog common terminal - connects to signal source or load in SPDT configuration |
| 2 | NC | Normally closed analog terminal - conducts to COM when IN = logic low |
| 3 | GND | Digital logic ground reference - separate from analog supply grounds per layout best practice |
| 4 | V+ | Positive analog supply input - must be ≥ |V−| + 9V for proper operation |
| 6 | IN | +3V-compatible digital control input - active-high logic controls NC/NO state |
| 7 | V− | Negative analog supply input - required for bipolar operation; tied to GND for single-supply use |
| 8 | NO | Normally open analog terminal - conducts to COM when IN = logic high |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports input signals from V− to V+ - eliminates clipping in full-swing sensor interfaces |
| Power-supply sequencing-free operation | No required power-up order for V+, V−, or GND - simplifies system power management |
| Low charge injection (15pC) | Minimizes voltage glitch on sampled capacitors - critical for 12-bit+ data acquisition accuracy |
| Guaranteed RON flatness (4Ω max) | Ensures consistent gain/attenuation across full analog input range - improves linearity in mux-based gain stages |
| Plug-in upgrade for DG419 | Pin- and footprint-compatible with legacy DG419 - enables drop-in reliability enhancement in existing designs |
Applications
| Audio Signal Routing | Test Equipment Multiplexing |
|---|---|
Use Scenario: Switching between microphone inputs and line-level outputs in professional audio mixers. IC Role / Device Role / Timing Role: SPDT analog switch controlling signal path selection with sub-200ns transition time. Use Value: 35Ω RON and rail-to-rail capability preserve dynamic range and THD (<0.002%) across full audio band. |
Use Scenario: Channel selection in automated test equipment (ATE) for multi-sensor calibration sequences. IC Role / Device Role / Timing Role: Precision analog multiplexer enabling sequential connection of DUTs to shared measurement circuitry. Use Value: Matched RON (≤3Ω) and low leakage (<5nA) ensure measurement repeatability across temperature and channel count. |
| Sample-and-Hold Circuits | Battery-Operated Systems |
Use Scenario: Sampling analog sensor outputs (e.g., thermocouples, strain gauges) into ADC front-ends. IC Role / Device Role / Timing Role: Low-charge-injection (15pC) switch isolating hold capacitor during acquisition phase. Use Value: Minimal voltage disturbance on hold capacitor maintains DC accuracy to within 1 LSB for 14-bit systems. |
Use Scenario: Power domain isolation and signal routing in portable medical devices powered by Li-ion batteries. IC Role / Device Role / Timing Role: Low-quiescent-current analog switch enabling selective activation of sensor subsystems. Use Value: I+ and I− ≤ 10µA at +85°C extends battery life while supporting wide supply range (+9V to +36V). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPDT analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4619EPA+ | Higher RON (45Ω), wider temp range (−40°C to +125°C), same 8-pin PDIP package | Better suited for automotive under-hood environments requiring extended temperature rating | Select MAX4619EPA+ only if +125°C operation is required; DG419LDJ offers lower RON and proven field reliability in industrial test gear |
| ADG1419BRZ | Lower RON (2.5Ω), higher supply current (120µA), SOIC-8 only - no PDIP option | Targeted at high-precision, low-distortion applications where PCB space allows surface-mount assembly | Choose ADG1419BRZ for ultra-low RON needs; DG419LDJ remains optimal for through-hole legacy upgrades and cost-sensitive production |
Compared with MAX4619EPA+ and ADG1419BRZ, the DG419LDJ delivers the best balance of low on-resistance, through-hole manufacturability, and proven +3V logic compatibility - making it the preferred choice for industrial test equipment and audio hardware requiring long-term component continuity.
Availability
DG419LDJ is available at Aetrix Electronics and suitable for audio signal routing, test equipment multiplexing, and sample-and-hold circuits requiring stable component supply, long-term obsolescence management, and through-hole assembly compatibility.
Supply support for DG419LDJ 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 DG419LDJ belongs to Maxim's precision analog switch family, engineered for signal integrity in instrumentation, test, and audio applications where low RON, low leakage, and logic-level compatibility are essential.
FAQ
What is the maximum analog signal voltage range supported by the DG419LDJ?
The DG419LDJ supports analog signals from V− to V+ across its entire operating range. With ±15V dual supplies, it handles ±15V signals rail-to-rail. In single-supply mode (+12V), it supports 0V to +12V signals. Absolute maximum ratings allow VCOM, VNC, or VNO to reach (V− − 0.3V) to (V+ + 0.3V), but sustained operation beyond V−/V+ is not recommended. DG419LDJ maintains specified RON and leakage performance only within the rated supply and signal ranges.
Does the DG419LDJ require specific power-supply sequencing during startup?
No - the DG419LDJ features power-supply sequencing-free operation, meaning V+, V−, and GND may power up in any order without risk of latchup or damage. This eliminates the need for external diodes or sequencing controllers required by older DG419 variants. DG419LDJ achieves this via internal protection circuitry that prevents parasitic SCR activation, simplifying system-level power design while maintaining full specification compliance.
Can the DG419LDJ be used with a single +12V supply instead of dual ±15V supplies?
Yes - the DG419LDJ operates with single supplies from +9V to +36V. When using +12V, connect V+ to +12V, V− to GND, and ensure the digital input (IN) remains referenced to the same GND. Analog signal range becomes 0V to +12V, and RON increases to 125Ω max (vs. 35Ω at ±15V), which is still suitable for many medium-precision applications. DG419LDJ retains all logic thresholds and leakage specs under single-supply conditions.
What is the break-before-make timing specification for the DG419LDJ?
The DG419LDJ guarantees a break-before-make delay (tD) of ≤1ns under standard test conditions (VNO/VNC = +10V, RL = 300Ω, CL = 35pF). This near-instantaneous isolation prevents momentary shorting between NC and NO paths during switching, protecting downstream circuitry from transient faults. DG419LDJ achieves this via optimized internal gate drive timing - confirmed across −40°C to +85°C and all valid supply configurations.
Is the DG419LDJ pin-compatible with the original DG419 series?
Yes - the DG419LDJ is a direct plug-in upgrade for the industry-standard DG419 in 8-pin plastic DIP packaging. Pin assignments, electrical behavior, and thermal characteristics are identical, with improvements limited to enhanced RON matching, lower leakage, and sequencing-free operation. DG419LDJ requires no PCB changes, layout modifications, or firmware updates when replacing legacy DG419 units in fielded equipment.
DG419LDJ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- 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):
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
DG419LDJ FAQ
1.How can I place an order for DG419LDJ through Aetrix?
Please submit a Request for Quotation (RFQ) for DG419LDJ 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 DG419LDJ reliable?
The price and inventory of DG419LDJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG419LDJ is usually 5 days.
3.What payment methods are accepted for DG419LDJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG419LDJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG419LDJ?
DG419LDJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG419LDJ 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 DG419LDJ?
For technical support, including DG419LDJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG419LDJ requirements.
6.How does Aetrix verify that DG419LDJ is sourced from the original manufacturer or authorized distributors?
All DG419LDJ 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 DG419LDJ meets industry standards.
7.What is the process for return or replacement of DG419LDJ?
All DG419LDJ units undergo pre-shipment inspection (PSI). If there is an issue with DG419LDJ, 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 DG419LDJ part is unused and in its original packaging.
Return procedure for DG419LDJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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