Analog Devices Inc./Maxim Integrated DG212EUE+

Overview

DG212EUE+ from Maxim Integrated is a quad SPST CMOS analog switch with normally open configuration, designed for bidirectional signal routing in ±4.5V to ±18V dual-supply systems. It features guaranteed break-before-make switching, 175Ω max R_DS(ON) at ±15V, <5pF OFF-capacitance per channel, and operates across –40°C to +85°C - used in programmable gain amplifiers and automatic test equipment.

For engineers reviewing the DG212EUE+ datasheet, DG212EUE+ pinout, DG212EUE+ application, or DG212EUE+ equivalent, key selection criteria include analog signal range (±15V), leakage current (<5nA), switching speed (t_ON = 460ns), and absence of VL supply requirement - critical for portable and industrial analog multiplexing designs.

Technical Context

The DG212EUE+ implements four independent CMOS transmission gates with inverted logic control inputs relative to DG211/DG201. Each switch guarantees nonlatching behavior when power supplies are disconnected while analog signals remain present, and maintains constant on-resistance over its full ±15V analog signal range.

It requires only dual supplies (V+, V–) and ground - eliminating the third logic supply (VL) needed by legacy equivalents. All channels support bidirectional current flow, add no DC offset, and exhibit matched dynamic characteristics including 90dB crosstalk rejection and 70dB OFF-isolation at 100kHz.

Key Specifications

Pinout & Package

Package: 16-pin TSSOP (4.4mm body width), RoHS-compliant, lead-free, exposed pad optional (connect to V+ or leave unconnected).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4617ESE+ and ADG1412BRUZ, the DG212EUE+ uniquely balances bipolar ±18V operation, no-VL simplicity, and industrial temperature rating - making it optimal for cost-sensitive, dual-supply test and instrumentation systems requiring proven reliability without design overhead.

Availability

DG212EUE+ is available at Aetrix Electronics and suitable for programmable gain amplifiers, analog multiplexers, automatic test equipment, communications systems, and sample-and-hold circuits requiring stable component supply across industrial temperature ranges.

Supply support for DG212EUE+ 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 DG212EUE+ belongs to Maxim's high-voltage analog switch product line, engineered for robust signal routing in dual-supply instrumentation and test systems where latch-up immunity and supply flexibility are mandatory.

FAQ

What is the maximum analog signal voltage supported by the DG212EUE+?

The DG212EUE+ supports an analog signal range of ±15V, meaning it can pass signals from –15V to +15V without distortion or clipping when operated with ±15V supplies. This is specified in the Electrical Characteristics table under VANALOG, and remains valid across its full operating temperature range of –40°C to +85°C. The DG212EUE+ maintains this range under all guaranteed conditions, including worst-case R_DS(ON) and leakage performance.

Does the DG212EUE+ require a separate logic supply voltage (VL)?

No, the DG212EUE+ does not require a VL supply. Unlike earlier analog switches such as the DG211, Maxim eliminated the need for a third logic supply rail while retaining full TTL/CMOS compatibility. The DG212EUE+ accepts logic inputs directly referenced to GND and operates reliably with V+ and V– only - simplifying power architecture and reducing component count in portable and space-constrained designs.

How does the DG212EUE+ ensure safe operation when power supplies are removed?

The DG212EUE+ is guaranteed nonlatching: it will not enter a destructive high-current state if V+ or V– is disconnected while analog signals remain applied to S or D pins. This fault tolerance is achieved through internal design that prevents parasitic SCR activation. The DG212EUE+ continues to block signal paths safely under these conditions - a key reliability feature for hot-swap or maintenance-mode scenarios in industrial systems.

What is the typical on-resistance (R_DS(ON)) of the DG212EUE+ and how does it vary with supply voltage?

The DG212EUE+ has a maximum R_DS(ON) of 175Ω at ±15V, with typical value of 115Ω. As supply voltage decreases, R_DS(ON) increases - e.g., at ±10V it rises to ~250Ω, and at ±5V exceeds 350Ω. This variation is documented in the "R_DS(ON) vs. Power Supplies" graph. Designers must verify R_DS(ON) at their actual operating supplies to assess insertion loss and gain error in precision applications.

Can the DG212EUE+ be used in bidirectional signal paths?

Yes, the DG212EUE+ supports fully bidirectional analog signal flow. Each SPST switch conducts equally well from source (S) to drain (D) or drain to source - with identical R_DS(ON), leakage, and capacitance specifications in both directions. This symmetry makes the DG212EUE+ suitable for AC-coupled voice paths, differential sensor interfaces, and any application where signal direction may reverse or is undefined.