Analog Devices Inc./Maxim Integrated MAX4690EAE+

Overview

MAX4690EAE+ from Maxim Integrated is a dual SPST normally open (NO) CMOS analog switch with 1.25Ω max on-resistance, ±4.5V to ±20V dual-supply or +4.5V to +36V single-supply operation, and rail-to-rail signal handling up to ±10V. It delivers guaranteed R_ON matching ≤0.3Ω between channels and <0.3Ω flatness over full signal range, enabling precision low-distortion switching in automated test equipment and data acquisition systems.

For engineers reviewing the MAX4690EAE+ datasheet, MAX4690EAE+ pinout, MAX4690EAE+ application, or MAX4690EAE+ equivalent, key selection criteria include its NO configuration, -40°C to +85°C extended temperature rating, SSOP-16 package, 5nA max off-leakage at +85°C, and TTL/CMOS-compatible control inputs with separate VL supply for logic-level flexibility across wide analog supply ranges.

Technical Context

The MAX4690EAE+ implements two independent normally open analog switches using high-voltage CMOS process technology, supporting true rail-to-rail analog signal routing without clipping. Its dual-supply architecture allows symmetric ±15V operation or asymmetric configurations while maintaining matched on-resistance and low charge injection (±550pC typical).

Each channel features independent digital control via IN1/IN2 pins referenced to VL, enabling logic compatibility with 3V or 5V systems regardless of analog supply voltage. Internal ESD protection exceeds 2kV per Method 3015.7, and break-before-make timing is not guaranteed-only the MAX4700 variant includes that feature.

Key Specifications

Pinout & Package

MAX4690EAE+ is housed in a 16-pin SSOP (Shrink Small Outline Package) with 0.65mm lead pitch, JEDEC MO-153 compliant, footprint compatible with SOIC-16 but 30% smaller area. Thermal resistance θ_JA = 140°C/W.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG1419BRUZ and TS5A3159DBVR, the MAX4690EAE+ uniquely provides dual independent NO switches with extended voltage range, separate VL logic supply, and guaranteed R_ON matching - making it the only option among the three qualified for high-precision, wide-supply, multi-channel industrial signal routing.

Availability

MAX4690EAE+ is available at Aetrix Electronics and suitable for automated test equipment, industrial data acquisition systems, and telecom infrastructure requiring stable component supply across extended temperature and voltage ranges.

Supply support for MAX4690EAE+ 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 MAX4680/MAX4690/MAX4700 family was designed specifically for high-fidelity analog signal routing in environments demanding low on-resistance, rail-to-rail operation, and robust thermal performance - targeting automatic test equipment and precision instrumentation.

FAQ

What is the maximum analog signal voltage range supported by the MAX4690EAE+?

The MAX4690EAE+ supports rail-to-rail analog signals from V− to V+, meaning it can handle input voltages spanning the full range of its analog supplies. With ±15V dual supplies, this equals ±15V; with +12V/0V single supply, it handles 0V to +12V. Absolute maximum ratings allow V+ up to +44V and V− down to −44V, but operational signal range remains bounded by the applied V+ and V− values. The MAX4690EAE+ datasheet confirms ±10V signal handling is fully specified and characterized.

Does the MAX4690EAE+ support break-before-make switching?

No, the MAX4690EAE+ does not support guaranteed break-before-make (BBM) switching. BBM is explicitly documented only for the MAX4700 variant in the same family. The MAX4690EAE+ implements simple SPST NO switches with independent control - both channels may conduct simultaneously if their respective IN pins are asserted, and no timing guarantee prevents overlap. For applications requiring BBM, the MAX4700EAE+ is the designated alternative within this family.

Can the MAX4690EAE+ operate with a 3.3V logic supply while using ±15V analog supplies?

Yes, the MAX4690EAE+ supports this exact configuration via its dedicated VL pin. The VL pin accepts 2.4V to 5.5V and sets the logic input thresholds (0.8V low, 2.4V high), allowing direct interface to 3.3V microcontrollers or FPGAs. Meanwhile, V+ and V− can be set to ±15V independently - the device's internal level-shifting circuitry ensures correct switch actuation without external components. This separation is confirmed in the Electrical Characteristics table under "Logic Input Voltage High/Low" test conditions.

What is the thermal performance of the MAX4690EAE+ in its SSOP-16 package?

The MAX4690EAE+ in 16-pin SSOP has a junction-to-ambient thermal resistance (θ_JA) of 140°C/W under standard JEDEC JESD51-7 conditions. At maximum rated power dissipation of 571mW (for T_A = +70°C), this yields a worst-case junction temperature rise of ~80°C above ambient - well within the -40°C to +85°C operating range. Derating begins above +70°C at 7.1mW/°C, ensuring reliable operation up to +85°C ambient when power dissipation remains below 450mW.

How does the MAX4690EAE+ compare to the MAX4680EAE+ in terms of switch configuration and use cases?

The MAX4690EAE+ contains two normally open (NO) switches, whereas the MAX4680EAE+ contains two normally closed (NC) switches. This fundamental difference dictates system behavior during power loss or logic fault: MAX4690EAE+ defaults to open-circuit (signal isolation), while MAX4680EAE+ defaults to closed-path (signal continuity). Use MAX4690EAE+ where fail-safe isolation is required (e.g., protecting sensitive inputs); use MAX4680EAE+ where default conduction is needed (e.g., bias path maintenance). Both share identical R_ON, leakage, and supply specifications.