Analog Devices Inc./Maxim Integrated MAX4622CPE+

Overview

MAX4622CPE+ from Maxim Integrated is a dual SPDT analog switch with two normally closed (NC) and two normally open (NO) poles, designed for precision signal routing in low-distortion systems. It delivers 5Ω max on-resistance, 0.5Ω max channel-to-channel R_ON match, <200ns turn-off time, and operates from ±4.5V to ±18V bipolar or +4.5V to +36V single supply - ideal for audio-signal routing and test equipment switching.

For engineers reviewing the MAX4622CPE+ datasheet, MAX4622CPE+ pinout, MAX4622CPE+ application, or MAX4622CPE+ equivalent, key selection criteria include guaranteed break-before-make timing, rail-to-rail analog signal handling, leakage <5nA at +85°C, and pin compatibility with DG403 for reed-relay replacement in military radios and PBX systems.

Technical Context

The MAX4622CPE+ implements a monolithic CMOS analog switch architecture with independent control of two SPDT sections, each enforcing guaranteed break-before-make operation to prevent signal shorting during transition. Its internal logic accepts TTL/CMOS-compatible inputs (0.8V/2.4V thresholds) and drives switches across the full V+ to V– analog range.

It supports both single-supply (+4.5V to +36V) and dual-supply (±4.5V to ±18V) configurations while maintaining low charge injection (45pC typ), flat on-resistance (±5Ω max variation over signal range), and high off-isolation (–62dB at 1MHz), enabling accurate signal integrity in data-acquisition and avionics timing paths.

Key Specifications

Pinout & Package

MAX4622CPE+ uses a 16-pin plastic DIP package (0.3-inch width) with through-hole mounting and standard JEDEC MO-011AC footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4622CSE+, the MAX4622CPE+ offers identical performance in a through-hole DIP package for prototyping and ruggedized systems; versus ADG403BRZ, it provides superior transition safety, tighter leakage control, and direct DG403 drop-in capability - making it preferred for military, test, and telecom upgrades.

Availability

MAX4622CPE+ is available at Aetrix Electronics and suitable for reed relay replacement, military radio design, and automated test equipment requiring stable component supply across extended temperature and long-lifecycle programs.

Supply support for MAX4622CPE+ 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 MAX462x family was designed specifically for precision analog switching in mission-critical systems where reliability, low distortion, and guaranteed timing behavior supersede cost-driven alternatives.

FAQ

What is the maximum supply voltage rating for MAX4622CPE+ in single-supply operation?

The MAX4622CPE+ supports single-supply operation from +4.5V to +36V. Absolute maximum rating for V+ to GND is +44V, but continuous operation above +36V is not specified or guaranteed. For reliable long-term use, stay within the +4.5V to +36V range as defined in the Electrical Characteristics table under "Power-Supply Range" for single-supply conditions.

Does MAX4622CPE+ require separate logic and analog supplies?

Yes, the MAX4622CPE+ requires VL (logic supply, typically +5V) and V+ (analog positive supply) as distinct pins. This separation minimizes digital noise coupling into analog paths. VL must be ≤ V+ + 0.3V and ≥ –0.3V, and is internally regulated to drive CMOS logic inputs - confirmed in Absolute Maximum Ratings and Pin Description sections of the datasheet.

Is break-before-make timing guaranteed for both SPDT sections of MAX4622CPE+?

Yes, break-before-make operation is guaranteed for both SPDT sections of the MAX4622CPE+. The datasheet explicitly states "Guaranteed Break-Before-Make Operation (MAX4622)" in the Features list and confirms it in Truth Tables and Switching-Time Test Circuits (Figure 3). Measured t_D (delay) is 90ns min, ensuring no overlap between NC and NO conduction.

Can MAX4622CPE+ operate with V– grounded in single-supply mode?

No - grounding V– is not valid for single-supply operation. In single-supply mode, V– must be connected to GND (pin 14), not left floating or tied to another potential. The datasheet specifies "V– = 0" for single-supply characterization, and Absolute Maximum Ratings define V– to GND as +0.3V to –44V - meaning 0V is acceptable and required. Confusing V– with a negative rail is incorrect; it serves as the analog ground reference in this configuration.

What is the typical charge injection value for MAX4622CPE+ and why does it matter?

The MAX4622CPE+ has a typical charge injection of 45pC (tested at V+ = +15V, V– = –15V). This parameter quantifies unwanted voltage step injected onto the COM node during switching, directly impacting settling time and accuracy in sample-and-hold or high-impedance multiplexed ADC applications. Low 45pC enables sub-16-bit accuracy in precision data acquisition without additional correction circuitry.