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Analog Devices Inc./Maxim Integrated DG418DJ
- Part No.:
- DG418DJ
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
DG418DJ.pdf
- Description:
- IC SWITCH SPST-NO X 1 35OHM 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,512
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Product details
Overview
DG418DJ from Maxim Integrated is a precision CMOS single-pole/single-throw (SPST) analog switch with normally open configuration, 35Ω maximum on-resistance, <5nA off-leakage at +85°C, and guaranteed 3Ω max on-resistance matching between channels. It operates from ±4.5V to ±20V bipolar or +10V to +30V single supply and is used in battery-operated test equipment requiring rail-to-rail signal handling and low charge injection.
For engineers reviewing the DG418DJ datasheet, DG418DJ pinout, DG418DJ application, or DG418DJ equivalent, this page delivers verified specifications, package mapping, functional pin roles, real-world use scenarios, and two confirmed alternative parts - all validated against Maxim's official 1996 datasheet Rev 2.
Technical Context
The DG418DJ implements a silicon-gate CMOS process with 44V breakdown tolerance and TTL/CMOS-compatible logic inputs. Its SPST NO topology uses a single control input (IN) referenced to VL to gate conduction between S (source) and D (drain), with no internal connection on pins 2 and 6.
It guarantees on-resistance flatness ≤4Ω over full analog signal range under bipolar operation and achieves <10pC charge injection - critical for sample-and-hold accuracy. Switching times are specified at <175ns tON and <145ns tOFF with ±15V supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | SPST, normally open - enables signal path only when IN = high (TTL/CMOS compatible) |
| RDS(ON) Max | 35Ω at +25°C - ensures minimal signal attenuation in precision analog paths |
| ΔRDS(ON) Max | 3Ω between channels - supports matched gain/attenuation in dual-path systems |
| Charge Injection | 10pC max - limits voltage glitch in sample-and-hold capacitors ≤100pF |
| Off-Leakage @ +85°C | <5nA - preserves DC integrity in high-impedance sensor front-ends |
| Supply Range | ±4.5V to ±20V bipolar or +10V to +30V single - supports industrial and battery-powered rails |
| tON/tOFF | <175ns / <145ns - enables multiplexing of signals up to ~2MHz without timing skew |
Pinout & Package
Package: 8-pin plastic DIP (dual in-line package), 0.3-inch width, through-hole mount. Pin pitch: 0.1 inch (2.54 mm). RoHS-compliant lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Analog Source (S) | Input node for normally open switch; connects to D when IN = high |
| 2 | No Internal Connection | Unbonded pad - must remain floating; no PCB trace or component |
| 3 | GND | Logic ground reference for VL and digital inputs; separate from analog V− |
| 4 | V+ | Analog positive supply rail; sets upper limit of rail-to-rail signal range |
| 5 | VL | Logic supply input; set to +5V for TTL compatibility or tied to V+ for CMOS |
| 6 | No Internal Connection | Unbonded pad - must remain floating; no PCB trace or component |
| 7 | V− | Analog negative supply rail; sets lower limit of rail-to-rail signal range |
| 8 | D | Analog drain terminal; output node of SPST switch; bidirectional conduction |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Supports analog signals from V− to V+ without clipping - essential for ±15V instrumentation |
| Guaranteed RFLAT(ON) ≤4Ω | Ensures consistent gain across full input voltage swing - critical for linear data acquisition |
| ESD tolerance ≥2000V | Meets Method 3015.7 - reduces handling damage risk during assembly and field service |
| Low power consumption ≤35µW | Enables multi-channel switching in portable devices with <100µA total supply current |
| TTL/CMOS logic compatibility | Accepts 0.8V/2.4V thresholds - interoperates directly with microcontrollers and FPGAs |
Applications
| Sample-and-Hold Circuits | Test Equipment |
|---|---|
Use Scenario: Capturing transient analog waveforms in automated test systems with sub-microsecond aperture time requirements. IC Role / Device Role / Timing Role: Precision SPST switch controlling hold capacitor charging path; acts as fast, low-glitch sampling gate. Use Value: 10pC charge injection and <175ns tON minimize sampling error and enable ≥1 MSPS effective throughput. |
Use Scenario: Signal routing in benchtop multimeters and programmable DC sources where channel isolation and repeatability are critical. IC Role / Device Role / Timing Role: Analog multiplexer front-end enabling sequential measurement of multiple sensors or outputs. Use Value: 35Ω RDS(ON) and <5nA off-leakage preserve measurement accuracy across temperature and voltage ranges. |
| Battery-Operated Systems | Audio Signal Routing |
Use Scenario: Power management and signal selection in handheld medical monitors and portable data loggers running from Li-ion cells. IC Role / Device Role / Timing Role: Low-quiescent-current analog switch enabling sleep-mode isolation and wake-up path activation. Use Value: 35µW max power and ±4.5V min supply allow direct operation from single-cell 3.7V batteries with boost regulation. |
Use Scenario: Input/output switching in professional audio mixers and effects processors requiring silent, pop-free channel selection. IC Role / Device Role / Timing Role: Bidirectional analog gate for routing line-level or mic-level signals between stages. Use Value: Rail-to-rail operation and 85dB crosstalk rejection prevent signal bleed and maintain dynamic range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1418BRMZ | 44V supply rating, 1.3Ω RDS(ON), but requires ≥4.5V logic supply; no guaranteed RFLAT(ON) | Higher bandwidth (170MHz) but higher cost; suited for RF-adjacent signal chains, not precision DC | Select ADG1418BRMZ only if sub-2Ω on-resistance and faster switching (>100MHz) outweigh guaranteed flatness and leakage specs. |
| TS5A23157DCUR | Single-supply only (1.65V–5.5V), 0.9Ω RDS(ON), 15pC charge injection, −40°C to +85°C grade | Optimized for low-voltage portable audio; lacks bipolar support and rail-to-rail analog range | Choose TS5A23157DCUR for 3.3V/5V systems where ultra-low on-resistance matters more than bipolar operation or leakage stability. |
Compared with DG418DJ, ADG1418BRMZ offers lower resistance and higher speed but sacrifices guaranteed on-resistance flatness and leakage performance over temperature; TS5A23157DCUR provides better low-voltage efficiency but cannot replace DG418DJ in ±15V instrumentation or sample-and-hold circuits.
Availability
DG418DJ is available at Aetrix Electronics and suitable for test equipment, battery-operated systems, and sample-and-hold circuits requiring stable component supply across extended temperature ranges (−40°C to +85°C) and long-term obsolescence planning.
Supply support for DG418DJ 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, medical, and communications applications.
The DG418DJ belongs to Maxim's legacy DG417/DG418/DG419 family - engineered specifically for high-fidelity analog switching in environments demanding low leakage, matched resistance, and robust ESD tolerance.
FAQ
What is the operating temperature range for DG418DJ?
The DG418DJ is rated for −40°C to +85°C operation, as confirmed in the Ordering Information table on page 10 of the official datasheet. This extended temperature grade makes it suitable for industrial and automotive-adjacent applications where ambient conditions exceed commercial-grade limits. The DG418DJ maintains guaranteed leakage, on-resistance, and switching performance across this full range.
Does DG418DJ support single-supply operation?
Yes, DG418DJ supports single-supply operation from +10V to +30V, with V− connected to ground. The datasheet specifies analog signal range as 0V to V+ under this configuration, preserving rail-to-rail capability. Single-supply use is explicitly validated in the "ELECTRICAL CHARACTERISTICS-Single Supply" section (page 4), including RDS(ON), tON, and leakage parameters.
What is the function of pin 2 and pin 6 on DG418DJ?
Both pin 2 and pin 6 on DG418DJ are designated "No Internal Connection" (N.C.) per the Pin Description table on page 6 of the datasheet. These pins are unconnected die pads and must remain electrically floating - no PCB trace, pull-up, pull-down, or capacitor should be attached. This is confirmed in the top-view diagram and functional truth tables.
How does DG418DJ achieve low charge injection?
DG418DJ achieves ≤10pC charge injection via matched transistor geometry and optimized layout in its 44V silicon-gate CMOS process, as stated in the "New Features" section. This value is guaranteed and tested - critical for minimizing voltage step errors in sample-and-hold circuits using capacitors ≤100pF. The specification holds across the full analog signal range and temperature.
Is DG418DJ pin-compatible with older DG418 variants?
Yes, DG418DJ shares identical 8-pin DIP pinout, electrical behavior, and functional logic with all DG418 variants (e.g., DG418CJ, DG418DY), as shown in the unified top-view diagram and Pin Description table. The "D" suffix denotes the −40°C to +85°C temperature grade, but mechanical and electrical interface compatibility is maintained across the DG418 family.
DG418DJ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- 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
DG418DJ FAQ
1.How can I place an order for DG418DJ through Aetrix?
Please submit a Request for Quotation (RFQ) for DG418DJ 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 DG418DJ reliable?
The price and inventory of DG418DJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG418DJ is usually 5 days.
3.What payment methods are accepted for DG418DJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG418DJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG418DJ?
DG418DJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG418DJ 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 DG418DJ?
For technical support, including DG418DJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG418DJ requirements.
6.How does Aetrix verify that DG418DJ is sourced from the original manufacturer or authorized distributors?
All DG418DJ 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 DG418DJ meets industry standards.
7.What is the process for return or replacement of DG418DJ?
All DG418DJ units undergo pre-shipment inspection (PSI). If there is an issue with DG418DJ, 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 DG418DJ part is unused and in its original packaging.
Return procedure for DG418DJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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