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, high-fidelity signal routing in ±5V to ±18V bipolar or +10V to +30V single-supply systems. It delivers <50Ω on-resistance, 150ns turn-on time, and break-before-make switching, with analog signal range spanning V− to V+ - making it 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, TTL/CMOS-compatible control inputs, guaranteed operation over 0°C to +70°C, 16-lead wide SO package, and compatibility with legacy industry-standard analog switch footprints.

Technical Context

The DG302ACWE implements monolithic CMOS switch architecture with latchup-proof construction and fully independent dual DPST channels. Each channel supports bidirectional analog signal routing across the full supply rail range (V− to V+), with matched on-resistance (<50Ω typ.) and low charge injection (12pC).

Its logic interface accepts TTL- and CMOS-level inputs, enabling direct connection to microcontrollers and logic families without level-shifting. Break-before-make timing (50ns min.) prevents momentary shorting during state transitions - critical in precision sample/hold and power-switching applications.

Key Specifications

Pinout & Package

Package: 16-lead wide SO (SOIC-W), 7.6mm × 10.3mm body, 1.27mm lead pitch, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DG302ACWE, ADG422BRZ offers wider supply voltage headroom and broader temperature qualification but uses a narrower SOIC package and exhibits higher leakage; MAX4617ESE+ lacks bipolar support entirely and trades on-resistance for ultra-low voltage operation - neither is pin-compatible, and both require schematic and layout adaptation.

Availability

DG302ACWE is available at Aetrix Electronics and suitable for portable instruments, programmable gain amplifiers, and low-power sample/hold circuits requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

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, mixed-signal, and power management ICs for demanding industrial, medical, and communications applications.

The DG302ACWE belongs to the DG300A family of TTL-compatible CMOS analog switches, engineered specifically for low-power, high-fidelity signal routing in battery-operated and rail-to-rail measurement systems.

FAQ

What is the maximum supply voltage rating for DG302ACWE?

The DG302ACWE supports bipolar supplies up to ±18V (36V total) and single-supply operation from +10V to +30V when V− is tied to GND. Absolute maximum V+ is 44V for DG302A variants, but DG302ACWE is rated to ±18V per its datasheet specifications and ordering information - exceeding this risks permanent damage.

Does DG302ACWE support break-before-make switching, and how is it implemented?

Yes, DG302ACWE guarantees break-before-make operation with a minimum 50ns interval between turn-off of one switch and turn-on of the complementary path in each DPST channel. This is achieved through internal timing control and is verified in the DG301(A)/DG303(A) test circuits - applicable to DG302ACWE as part of the same family architecture.

What is the analog signal range supported by DG302ACWE?

The DG302ACWE supports analog signals ranging from V− to V+, i.e., rail-to-rail operation. With ±15V supplies, this means −15V to +15V; with +24V/V− = GND, it supports 0V to +24V. This eliminates the need for external level-shifting and preserves signal integrity across the full dynamic range.

Is DG302ACWE pin-compatible with older DG302 series devices?

Yes, DG302ACWE is pin-compatible with DG302CWE and other 16-lead wide SO variants in the DG300–DG303A family. All share identical pinout, package dimensions, and electrical interface - enabling drop-in replacement in existing designs without PCB modification.

What is the typical on-resistance matching between channels in DG302ACWE?

Typical on-resistance matching between channels in DG302ACWE is 10%, as documented in the Applications Information section. This tight matching ensures consistent gain and signal attenuation across dual-path configurations - critical in differential or balanced signal routing applications.