Analog Devices Inc./Maxim Integrated DG418CJ

Overview

DG418CJ from Maxim Integrated is a precision single-pole/single-throw (SPST), normally open analog switch fabricated in a 44V silicon-gate CMOS process. It delivers guaranteed on-resistance matching ≤3Ω, on-resistance flatness ≤4Ω over signal range, charge injection ≤10pC, off-leakage <5nA at +85°C, and operates from ±4.5V to ±20V or +10V to +30V supplies. It is used in sample-and-hold circuits, audio signal routing, and battery-operated test equipment.

For engineers reviewing the DG418CJ datasheet, DG418CJ pinout, DG418CJ application, or DG418CJ equivalent, key selection criteria include guaranteed R_DS(ON) match across temperature, rail-to-rail analog signal handling up to ±15.5V, TTL/CMOS logic compatibility, low power consumption (≤35µW), and ESD tolerance ≥2000V per Method 3015.7.

Technical Context

The DG418CJ implements a monolithic CMOS transmission gate architecture with matched P- and N-channel devices, enabling bidirectional conduction and rail-to-rail analog signal switching. Its logic interface accepts TTL- or CMOS-level inputs referenced to VL, supporting flexible supply configurations including unbalanced rails like +24V/–5V.

Guaranteed performance parameters-including R_DS(ON) match (≤3Ω), R_FLAT(ON) (≤4Ω), and off-leakage (<5nA at +85°C)-are specified only under bipolar-supply operation and validated across the full 0°C to +70°C commercial temperature range. Switching times (t_ON ≤175ns, t_OFF ≤145ns) are characterized at ±15V with 300Ω/35pF load.

Key Specifications

Pinout & Package

Package: 8-pin plastic DIP (0.300" wide), RoHS-compliant, through-hole mountable. Pin 1 identified by notch or dot; pin 1 is Analog-Switch Source Terminal (normally open).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar analog switch applications.

Compared with ADG1418BRUZ and TS5A23157DCUR, DG418CJ uniquely guarantees both R_DS(ON) matching (≤3Ω) and flatness (≤4Ω) over its full signal range-critical for gain-matched multiplexing and precision hold circuits-while supporting true bipolar ±20V operation unmatched by either alternative.

Availability

DG418CJ is available at Aetrix Electronics and suitable for sample-and-hold circuits, audio signal routing, and battery-operated test equipment requiring stable component supply, long-lifecycle availability, and traceable sourcing.

Supply support for DG418CJ 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 high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and computing applications.

The DG418CJ belongs to Maxim's precision analog switch family engineered for metrology-grade signal integrity-emphasizing guaranteed R_DS(ON) matching, low charge injection, and robust bipolar supply operation in demanding test and measurement systems.

FAQ

What is the maximum analog signal voltage range supported by DG418CJ?

The DG418CJ supports rail-to-rail analog signals up to ±15.5V when operated with ±16.5V supplies, or up to +12V with a +12V single supply (V− = 0V). This range is defined by the absolute maximum ratings and confirmed in the Electrical Characteristics tables for dual- and single-supply conditions. The DG418CJ maintains guaranteed R_FLAT(ON) ≤4Ω across this full range only under bipolar-supply operation.

Does DG418CJ require external pull-up or pull-down resistors on the IN pin?

No, DG418CJ does not require external biasing on the IN pin. Its logic input is fully compatible with standard TTL (0.8V/2.4V thresholds) and CMOS levels, and internal input structure ensures valid logic recognition across the full supply range. The DG418CJ datasheet specifies I_INH and I_INL ≤ ±0.5µA at +25°C, confirming negligible input current draw that eliminates need for external resistors.

Can DG418CJ operate with unbalanced supplies such as +24V and –5V?

Yes, DG418CJ supports unbalanced supplies including +24V and –5V, provided the difference between V+ and V− does not exceed +44V and each supply remains within its absolute maximum rating (V+ ≤ +44V referenced to V−, GND ≤ +25V referenced to V−). This flexibility is explicitly stated in the Applications Information section and enables simplified power design in systems with asymmetric rail requirements.

What is the guaranteed off-leakage current specification for DG418CJ at elevated temperature?

The DG418CJ guarantees off-leakage current <5nA at +85°C, as tested and documented in the Electrical Characteristics table under "ID(OFF)" and "IS(OFF)". This value is 100% production-tested at maximum rated hot temperature and correlated to +25°C performance. The DG418CJ's leakage remains stable across temperature due to its 44V silicon-gate process and optimized layout.

Is DG418CJ pin-compatible with legacy DG418 variants like DG418DJ or DG418CY?

Yes, DG418CJ is pin-compatible with all other DG418 variants (e.g., DG418DJ, DG418CY, DG418C/D) in the same package type-8-pin plastic DIP. All share identical pinout, electrical interface, and functional behavior. The suffix denotes temperature grade (CJ = 0°C to +70°C) and package (J = plastic DIP); no circuit or timing differences exist between these variants beyond temperature rating and reliability screening.