Analog Devices Inc./Maxim Integrated DG417LDJ+

Overview

DG417LDJ+ from Maxim Integrated is a precision CMOS single-pole/single-throw (SPST) analog switch with normally closed (NC) configuration, 35Ω max on-resistance, ±4.5V to ±20V dual-supply or +9V to +36V single-supply operation, and +3V logic-compatible digital inputs (VIH = 2.0V, VIL = 0.8V). It delivers rail-to-rail analog signal handling, <5nA off-leakage at +85°C, and sub-250ns switching in battery-powered test equipment and communications systems.

For engineers reviewing the DG417LDJ+ datasheet, DG417LDJ+ pinout, DG417LDJ+ application, or DG417LDJ+ equivalent, key selection criteria include guaranteed RON matching (≤3Ω), RON flatness (≤4Ω), charge injection (15pC), off-isolation (–90dB @ 1MHz), and extended –40°C to +85°C temperature rating in an 8-pin plastic DIP package.

Technical Context

The DG417LDJ+ implements a fully differential CMOS transmission gate architecture enabling bidirectional conduction with symmetrical on-resistance across the full analog range. Its logic interface eliminates power-supply sequencing requirements-V+, V−, and GND may power up in any order without latchup risk.

It supports both bipolar (±4.5V to ±20V) and single-ended (+9V to +36V) supplies while maintaining guaranteed performance: on-resistance flatness ≤4Ω, off-leakage <5nA at +85°C, and break-before-make timing <1ns (DG419L only; DG417LDJ+ is SPST NC, no BBM).

Key Specifications

Pinout & Package

Package: 8-pin plastic DIP (0.300" wide), through-hole mount, rated for –40°C to +85°C operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4617CPA+ and ADG1419BRZ, DG417LDJ+ uniquely balances low RON (35Ω), tight matching (≤3Ω), guaranteed flatness (≤4Ω), and industry-standard 8-DIP packaging-making it the preferred choice for upgrading legacy test and telecom equipment without layout changes.

Availability

DG417LDJ+ is available at Aetrix Electronics and suitable for sample-and-hold circuits, communications systems, and battery-operated instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for DG417LDJ+ 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 DG417LDJ+ belongs to Maxim's precision analog switch family designed for signal integrity-critical applications including test equipment, medical instrumentation, and military-grade communications-where guaranteed RON matching, low leakage, and sequencing-free operation are mandatory.

FAQ

What is the maximum allowable analog signal voltage range for DG417LDJ+?

The DG417LDJ+ supports analog signals from V− to V+ across its COM, NC, and NO terminals. With ±15V supplies, this yields a ±15V range; with +36V single supply and V− = 0V, it supports 0V to +36V. Absolute maximum ratings limit VCOM, VNC, or VNO to (V− − 0.3V) to (V+ + 0.3V), and exceedance triggers internal diode clamping-so design within the specified operating range to avoid distortion or damage. DG417LDJ+ maintains rail-to-rail capability across all supported supply configurations.

Does DG417LDJ+ require power-supply sequencing during startup?

No, DG417LDJ+ does not require power-supply sequencing. Unlike legacy DG417 switches, it eliminates the need for strict V+, VL, then V− ordering. V+, V−, and GND may power up in any sequence without risk of latchup. This simplifies power architecture in systems with multiple independent rails and removes the need for external protection diodes. DG417LDJ+ achieves this via internal circuit enhancements confirmed in Maxim's Applications Information section.

What is the typical charge injection value for DG417LDJ+, and why does it matter?

DG417LDJ+ specifies 15pC typical charge injection (Q) under standard test conditions (VGEN = 0, RGEN = 0, CL = 1nF). This parameter quantifies the transient voltage glitch injected onto a hold capacitor during switching-directly impacting accuracy in sample-and-hold and switched-capacitor circuits. At 15pC into a 1nF capacitor, the resulting step is 15mV; lower Q values like this minimize settling error and preserve resolution in 12-bit+ data acquisition systems using DG417LDJ+.

Can DG417LDJ+ operate from a single +12V supply?

Yes, DG417LDJ+ supports single-supply operation from +9V to +36V. When powered from +12V (V+ = +12V, V− = 0V), it maintains full functionality: analog signal range 0V to +12V, logic thresholds remain VIH = 2.0V/VIL = 0.8V, and RON is 125Ω max (vs. 45Ω at ±15V). Switching times increase slightly (tON ≤ 400ns), but the device remains fully specified and qualified for this mode-enabling use in cost-sensitive, single-rail industrial controls and portable instruments where bipolar supplies are impractical.

Is DG417LDJ+ pin-compatible with the original DG417?

Yes, DG417LDJ+ is a direct pin-compatible upgrade for the industry-standard DG417 in the 8-pin plastic DIP package. Pin functions (COM, NC, GND, V+, IN, V−, NC) match identically, and electrical specifications-including RON, leakage, and timing-are either equal or improved. The "L" suffix denotes enhanced features: sequencing-free operation, tighter RON matching (3Ω vs. unspecified), and guaranteed flatness (4Ω). No PCB or schematic changes are needed when replacing DG417 with DG417LDJ+ in existing designs.