Analog Devices Inc./Maxim Integrated DG202DY

Overview

DG202DY from Maxim Integrated is a quad SPST normally open CMOS analog switch designed for bidirectional signal routing in ±4.5V to ±18V dual-supply systems. It features guaranteed break-before-make switching, 175Ω typical on-resistance at ±15V, <5pF off-capacitance per channel, and operates across –40°C to +85°C. It serves as a precision signal path selector in programmable gain amplifiers and automatic test equipment.

For engineers reviewing the DG202DY datasheet, DG202DY pinout, DG202DY application, or DG202DY equivalent, key selection criteria include its rail-to-rail analog signal range (±15V), low charge injection (20pC), CMOS/TTL logic compatibility, absence of VL supply requirement, and SOIC-16 packaging with industrial temperature rating.

Technical Context

The DG202DY implements four independent SPST switches using monolithic CMOS process technology, with inverted control inputs relative to DG201/DG211. Each switch guarantees break-before-make operation and maintains constant on-resistance over its full ±15V analog signal range.

It requires only dual supplies (V+, V–) and ground-no separate logic supply (VL)-and remains nonlatching even when power is removed while analog signals remain present. Its input logic thresholds are compatible with both CMOS and TTL voltage levels.

Key Specifications

Pinout & Package

Package: 16-pin SOIC (SO), 0.150" wide, RoHS-compliant lead finish (Pb-free option available as DG202DY+), -40°C to +85°C operating range.

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 DG202DY offers broader supply flexibility (±4.5V to ±18V), industrial temperature support, and VL-free operation-making it optimal for ruggedized test equipment and programmable analog front-ends where supply headroom and reliability outweigh ultra-low on-resistance demands.

Availability

DG202DY is available at Aetrix Electronics and suitable for automatic test equipment, programmable gain amplifiers, communications infrastructure, and sample-and-hold circuits requiring stable component supply across extended temperature ranges and dual-supply analog systems.

Supply support for DG202DY 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 fabless semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and computing markets.

The DG202DY belongs to Maxim's legacy analog switch family designed for robust, rail-to-rail signal routing in dual-supply environments-targeting applications demanding latch-up immunity, wide voltage operation, and simplified power architecture.

FAQ

What is the maximum allowable supply voltage for DG202DY?

The DG202DY supports continuous operation from ±4.5V to ±18V. Absolute maximum ratings specify V+ to V− ≤ 44V, V+ to ground ≤ +25V, and V− to ground ≥ –25V. Exceeding these may cause permanent damage. The device is rated for ±15V nominal operation, where key parameters like R_DS(ON) and leakage are characterized. DG202DY must never be operated beyond its absolute maximum ratings, even momentarily.

Does DG202DY require a separate logic supply (VL)?

No, DG202DY does not require a VL supply. Unlike earlier analog switches such as the original DG212, Maxim eliminated the need for a third logic supply while maintaining full CMOS/TTL compatibility. DG202DY operates using only V+, V−, and GND-reducing system complexity, PCB area, and BOM cost. This is explicitly confirmed in the datasheet's Features section and Ordering Information table.

What is the meaning of "inverted control inputs" in DG202DY?

In DG202DY, a logic low (≤0.8V) on IN1–IN4 turns the corresponding switch ON, while a logic high (≥2.4V) turns it OFF-opposite to the behavior of DG201/DG211. This inversion is inherent to the part's design and is documented in the General Description. Control timing must account for this polarity; for example, asserting IN1 = 0V enables S1–D1 conduction. No external inversion logic is needed-the behavior is built into the DG202DY silicon.

Can DG202DY handle bidirectional analog signals?

Yes, DG202DY supports fully bidirectional analog signal flow through each SPST switch. Its CMOS construction allows current conduction in either direction between S and D terminals, with no offset voltage added to the signal path. This is confirmed in the General Description ("All switches conduct current in either direction and add no offset to the output signal") and is essential for applications like AC-coupled communications and differential signal routing.

What is the thermal performance of DG202DY in SOIC-16 package?

In the 16-pin SOIC package, DG202DY has a power dissipation rating of 696mW at +70°C ambient, with a derating factor of 8.7mW/°C above that temperature. At maximum rated junction temperature (+125°C), usable power dissipation drops to ~290mW. Thermal resistance θ_JA is approximately 115°C/W. Proper PCB copper pour under pin 13 (V+) and thermal vias improve heat transfer-especially important in high-channel-count or high-duty-cycle switching applications.