Analog Devices Inc./Maxim Integrated DG302ACWE+

Overview

DG302ACWE+ from Maxim Integrated is a dual DPST (double-pole, double-throw) CMOS analog switch optimized for low-power, precision signal routing in ±5V to ±18V dual-supply or +10V to +30V single-supply systems. It features <50Ω on-resistance, 150ns turn-on time, break-before-make switching, and ±15V analog signal range with TTL/CMOS-compatible control inputs - ideal for programmable gain amplifiers and portable instrumentation.

For engineers reviewing the DG302ACWE+ datasheet, DG302ACWE+ pinout, DG302ACWE+ application, or DG302ACWE+ equivalent, key selection criteria include dual DPST topology, guaranteed 0°C to +70°C operation, 16-lead wide SOIC package, and compatibility with legacy DG302/DG302A designs requiring low charge injection (12pC) and high off-isolation (62dB).

Technical Context

The DG302ACWE+ implements monolithic CMOS switch architecture with latchup-proof construction and substrate-isolated V+ connection. Its dual DPST configuration provides four independent SPST switches grouped as two isolated poles, each with break-before-make timing (50ns minimum interval) to prevent signal shorting during state transitions.

It supports rail-to-rail analog signal switching from V− to V+, with on-resistance flatness maintained across the full signal range. Control logic accepts TTL/CMOS voltage levels (0.8V/4.0V thresholds), and supply current remains below 0.5mA at +25°C - enabling direct integration into battery-powered telemetry and sample/hold circuits without level-shifting.

Key Specifications

Pinout & Package

DG302ACWE+ is housed in a 16-lead wide SOIC (SOIC-W) package with 0.300" body width, 1.27mm lead pitch, and exposed pad not present. Pin 1 is marked with a beveled corner or dot; pin numbering follows standard SOIC convention.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4672ESE+ and ADG426BRUZ, DG302ACWE+ delivers guaranteed dual DPST topology with sub-50Ω on-resistance and validated break-before-make behavior - making it uniquely suitable for precision signal routing where pole synchronization and minimal signal path degradation are non-negotiable.

Availability

DG302ACWE+ is available at Aetrix Electronics and suitable for portable instrumentation, programmable gain amplifiers, and low-power sample/hold circuits requiring stable component supply across extended production lifecycles.

Supply support for DG302ACWE+ 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 and mixed-signal ICs for industrial, medical, and communications applications, emphasizing low power, high reliability, and robust performance.

The DG302ACWE+ belongs to the DG300–DG303A family of TTL-compatible CMOS analog switches engineered for battery-powered and rail-to-rail signal routing applications where low on-resistance, fast switching, and low charge injection are essential.

FAQ

What is the operating temperature range for DG302ACWE+?

The DG302ACWE+ is specified for 0°C to +70°C ambient operation, as indicated by the 'C' suffix in its ordering code. This commercial-grade temperature range is validated across all electrical parameters in the datasheet, including on-resistance, switching times, and leakage currents - ensuring reliable performance in office, lab, and non-extreme industrial environments where the DG302ACWE+ is commonly deployed.

Does DG302ACWE+ support single-supply operation?

Yes, DG302ACWE+ supports single-supply operation by connecting V− to GND and applying V+ between +10V and +30V. In this configuration, the analog signal range spans 0V to V+, maintaining full rail-to-rail switching capability. The device retains TTL/CMOS logic compatibility and all key specifications - including <50Ω on-resistance and 150ns turn-on time - under single-supply conditions as verified in Table 1 of the datasheet.

What does "dual DPST" mean for DG302ACWE+?

"Dual DPST" means DG302ACWE+ contains two independent double-pole, double-throw switch sections - effectively four SPST switches grouped into two isolated poles. Each pole routes one signal path with make-before-break isolation. This topology enables simultaneous switching of complementary signals (e.g., differential pairs) or redundant power paths, directly supporting applications like programmable gain amplifiers and power-supply sequencing where coordinated pole action is required.

How is DG302ACWE+ pin-compatible with legacy devices?

DG302ACWE+ is pin-compatible with the original DG302 and DG302A devices, sharing identical 16-lead wide SOIC pinout, terminal functions, and electrical behavior. Maxim explicitly states electrical and pin compatibility across the DG300–DG303 and DG300A–DG303A families. No PCB redesign is needed when upgrading from DG302CWE or DG302ACWE to DG302ACWE+, preserving layout integrity and qualification effort.

What is the maximum analog signal voltage DG302ACWE+ can handle?

DG302ACWE+ supports analog signals from V− to V+, with absolute maximum ratings allowing V+ up to +18V and V− down to −18V in dual-supply mode. Under ±15V supplies, the usable analog range is ±15V - confirmed by VANALOG = −15V to +15V in the Electrical Characteristics table. Signals exceeding these rails are clamped by internal diodes, but sustained operation outside the specified range risks damage or parameter degradation.