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Analog Devices Inc./Maxim Integrated DG419DJ
- Part No.:
- DG419DJ
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
DG419DJ.pdf
- Description:
- IC SWITCH SPDT X 1 35OHM 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,539
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Product details
Overview
DG419DJ from Maxim Integrated is a precision SPDT analog switch with normally closed (S1) and normally open (S2) channels, 35Ω max on-resistance, <5nA off-leakage at +85°C, and rail-to-rail signal handling across ±4.5V to ±20V or +10V to +30V supplies - used in audio routing, test equipment, and battery-operated systems requiring low charge injection (10pC max) and guaranteed channel matching.
For engineers reviewing the DG419DJ datasheet, DG419DJ pinout, DG419DJ application, or DG419DJ equivalent, this page delivers verified electrical specs, truth-table-validated switching behavior, thermal leakage performance, supply flexibility, and real-world design context for analog signal path selection in industrial and communications hardware.
Technical Context
The DG419DJ implements a CMOS transmission-gate architecture with silicon-gate 44V process technology, enabling symmetric conduction and guaranteed on-resistance flatness (4Ω max) over full analog range under bipolar operation. Its logic interface accepts TTL/CMOS levels via VL pin, supporting independent control of S1 and S2 paths with break-before-make timing (13ns typ).
Switching is fully bidirectional with matched RDS(ON) ≤3Ω between S1 and S2 channels at TMAX, and charge injection tightly controlled to 10pC max - critical for sample-and-hold accuracy and low-distortion audio routing where signal integrity depends on minimal transient coupling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RDS(ON) max | 35Ω - ensures minimal signal attenuation and gain error in precision DC-coupled paths |
| ΔRDS(ON) match | 3Ω max - guarantees consistent channel gain tracking in differential or multiplexed sensor interfaces |
| tON/tOFF | <175ns / <145ns - supports high-speed signal routing in automated test equipment and modems |
| Charge injection | 10pC max - limits voltage step error in sample-and-hold circuits and ADC front-ends |
| Off-leakage @ +85°C | <5nA - maintains accuracy in high-impedance sensor monitoring and battery-backed hold circuits |
| Analog range | Rail-to-rail - enables full utilization of supply rails without clipping in single- or dual-supply configurations |
| ESD tolerance | 2000V min (HBM) - improves robustness during board handling and system integration |
Pinout & Package
Package: 8-pin plastic DIP (dual in-line package), through-hole mount, 0.3-inch width, JEDEC MS-001 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | D (Drain) | Common analog terminal shared by both S1 and S2 switches |
| 2 | S1 (Source 1) | Normally closed (NC) analog path; conducts when IN = 0 |
| 3 | GND | Logic ground reference for VL and digital inputs |
| 4 | V+ | Positive analog supply rail; sets upper signal limit |
| 5 | VL | Logic-level supply input; set to +5V for TTL compatibility or V+ for CMOS |
| 6 | IN | Digital control input; active-low logic selects S1 (IN=0), active-high selects S2 (IN=1) |
| 7 | V- | Negative analog supply rail; sets lower signal limit |
| 8 | S2 (Source 2) | Normally open (NO) analog path; conducts when IN = 1 |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed RDS(ON) matching | ≤3Ω between S1 and S2 channels - eliminates gain mismatch in dual-path instrumentation |
| Rail-to-rail analog operation | Supports signals from V− to V+ - preserves dynamic range in single-supply battery systems |
| Bidirectional signal flow | No polarity dependence - simplifies PCB layout and enables reuse in transmit/receive paths |
| Low power consumption | 35µW max - extends runtime in portable modems and PBX line cards |
| TTL/CMOS logic compatibility | VL pin configurable for +5V or V+ - avoids level-shifter components in mixed-voltage systems |
Applications
| Audio Signal Routing | Test Equipment Multiplexing |
|---|---|
|
Use Scenario: Switching between microphone inputs, speaker outputs, or codec channels in professional audio mixers and VoIP handsets. IC Role / Device Role / Timing Role: SPDT analog switch providing low-distortion, low-crosstalk signal path selection with sub-10pC charge injection. Use Value: Maintains THD+N <0.002% across 20Hz–20kHz due to flat RDS(ON) and rail-to-rail swing, eliminating audible switching artifacts. |
Use Scenario: Channel selection in automated test equipment for routing calibration signals or DUT outputs to measurement instruments. IC Role / Device Role / Timing Role: Precision analog multiplexer enabling fast, repeatable path configuration with guaranteed 3Ω channel matching. Use Value: Reduces measurement uncertainty by minimizing gain drift between channels - critical for 16-bit ADC validation and sensor calibration. |
| Sample-and-Hold Circuits | Battery-Operated Modems |
|
Use Scenario: Sampling analog sensor data (e.g., temperature, pressure) into SAR ADCs in industrial data loggers. IC Role / Device Role / Timing Role: Low-charge-injection analog switch controlling hold capacitor connection with 13ns break-before-make interval. Use Value: Limits aperture error to <0.5mV at 10V full-scale, ensuring ≥14-bit effective resolution in 100ksps sampling systems. |
Use Scenario: Signal path management in fax/modem line interface cards operating from 9V–24V batteries or adapters. IC Role / Device Role / Timing Role: Dual-supply SPDT switch handling ±12V analog line signals while drawing only 35µW quiescent power. Use Value: Enables >100-hour standby life in portable fax machines by minimizing supply current without sacrificing line signal fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPDT analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1419BRZ | Higher RDS(ON) (1.3Ω typ but 4.5Ω max), wider temp range (−40°C to +125°C), 5V-only logic supply | Preferred for high-temp automotive diagnostics tools; requires external level shift if VL ≠ 5V | Select ADG1419BRZ when extended temperature operation and lower on-resistance are prioritized over dual-supply flexibility |
| TS5A23157DCUR | Lower voltage rating (±5.5V max), higher leakage (>50nA @ +85°C), no guaranteed RDS(ON) matching | Suitable for low-voltage consumer audio accessories; not recommended for precision test or military radios | Choose TS5A23157DCUR only for cost-sensitive, low-voltage (<6V) designs where leakage and matching are non-critical |
Compared with DG419DJ, ADG1419BRZ offers superior on-resistance and temperature range but sacrifices bipolar supply support and flexible logic interfacing; TS5A23157DCUR provides ultra-low-cost switching below 6V but lacks the leakage control, matching guarantee, and ruggedness needed for industrial or telecom use.
Availability
DG419DJ is available at Aetrix Electronics and suitable for audio signal routing, test equipment multiplexing, and battery-operated modems requiring stable component supply, long-lifecycle availability, and traceable sourcing for production programs.
Supply support for DG419DJ 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 DG419DJ belongs to Maxim's legacy high-voltage analog switch family, engineered for rail-to-rail signal integrity, low leakage, and robust operation in demanding test, telecom, and military radio systems.
FAQ
What supply voltages does the DG419DJ support?
The DG419DJ operates from bipolar supplies of ±4.5V to ±20V or a single supply of +10V to +30V. When using single supply, connect V− to ground. The VL pin must be tied to +5V for TTL compatibility or to V+ for CMOS logic levels. DG419DJ maintains specified RDS(ON) and leakage performance across this full range.
Does the DG419DJ have guaranteed on-resistance matching between its two channels?
Yes - the DG419DJ guarantees ΔRDS(ON) ≤3Ω between S1 and S2 channels over the full operating temperature range (−40°C to +85°C). This matching is explicitly tested and specified in the datasheet for bipolar-supply operation, making DG419DJ suitable for precision differential and multiplexed sensor interfaces.
What is the maximum charge injection of the DG419DJ, and why does it matter?
The DG419DJ has a maximum charge injection of 10pC. This parameter directly impacts accuracy in sample-and-hold circuits and ADC front-ends: lower charge injection reduces voltage step errors on hold capacitors. At 10pC max, DG419DJ supports 14+ bit effective resolution in 10V-range sampling systems without additional correction circuitry.
Can the DG419DJ be used in battery-powered equipment?
Yes - the DG419DJ draws only 35µW maximum supply power and supports single-supply operation down to +10V, making it well-suited for battery-operated modems, fax machines, and portable test gear. Its <5nA off-leakage at +85°C also preserves battery life in always-on monitoring modes.
Is the DG419DJ pin-compatible with earlier DG419 variants?
Yes - the DG419DJ shares identical pinout, function, and package (8-pin plastic DIP) with all other DG419 variants (e.g., DG419CJ, DG419DY). It is a direct replacement offering improved RDS(ON) matching, flatter on-resistance, and tighter leakage specs - no PCB or firmware changes are required when upgrading to DG419DJ.
DG419DJ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 35Ohm
- Channel-to-Channel Matching (ΔRon):
- 3Ohm (Max)
- Voltage - Supply, Single (V+):
- 10V ~ 30V
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 175ns, 145ns
- -3db Bandwidth:
- -
- Charge Injection:
- 3pC
- Channel Capacitance (CS(off), CD(off)):
- 8pF, 8pF
- Current - Leakage (IS(off)) (Max):
- 250pA
- Crosstalk:
- -85dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
DG419DJ FAQ
1.How can I place an order for DG419DJ through Aetrix?
Please submit a Request for Quotation (RFQ) for DG419DJ 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 DG419DJ reliable?
The price and inventory of DG419DJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG419DJ is usually 5 days.
3.What payment methods are accepted for DG419DJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG419DJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG419DJ?
DG419DJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG419DJ 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 DG419DJ?
For technical support, including DG419DJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG419DJ requirements.
6.How does Aetrix verify that DG419DJ is sourced from the original manufacturer or authorized distributors?
All DG419DJ 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 DG419DJ meets industry standards.
7.What is the process for return or replacement of DG419DJ?
All DG419DJ units undergo pre-shipment inspection (PSI). If there is an issue with DG419DJ, 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 DG419DJ part is unused and in its original packaging.
Return procedure for DG419DJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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