Analog Devices Inc./Maxim Integrated MAX419CPD

Overview

MAX419CPD from Maxim Integrated is a quad, single-supply operational amplifier optimized for ultra-low-power sensor signal conditioning and battery-powered instrumentation. It features 1.2µA max supply current per amplifier, 150kHz gain-bandwidth product, and rail-to-rail output swing with ±0.5V input common-mode range extending to V_EE. It operates from +2.7V to +16V over 0°C to +70°C and is housed in a 14-pin plastic DIP package.

For engineers reviewing the MAX419CPD datasheet, MAX419CPD pinout, MAX419CPD application, or MAX419CPD equivalent, key selection criteria include its guaranteed 1.2µA max quiescent current per channel, rail-to-rail output capability at low supply voltage, input common-mode range down to ground, and compatibility with single-supply industrial and portable measurement systems requiring minimal power budget allocation.

Technical Context

The MAX419CPD integrates four independent op-amps on a single die with matched DC performance across channels. Its input stage uses P-channel JFET inputs to achieve sub-1pA bias current and high input impedance (>10¹²Ω), enabling direct interfacing with high-impedance sensors like pH electrodes and piezoresistive bridges.

It employs a Class AB output stage delivering rail-to-rail swing within 20mV of each rail under 10kΩ load, while maintaining stable unity-gain operation without external compensation. The device meets all AC/DC specifications over the full 0°C to +70°C temperature range and is specified with no input offset voltage trimming required.

Key Specifications

Pinout & Package

MAX419CPD is supplied in a 14-pin plastic DIP (dual in-line package) with 0.300-inch body width and standard through-hole mounting footprint (package code P14-3, document #21-0043). Pin spacing is 0.100 inch, compatible with industry-standard PCB layouts and socketing.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad, ultra-low-power op-amp applications.

Compared with TLV2474IDR and LPV521MG/NOPB, the MAX419CPD uniquely delivers guaranteed 1.2µA max per amplifier in a matched quad configuration with rail-to-rail output and ground-sensing input - making it the only option meeting stringent low-power, multi-channel, single-supply requirements without design trade-offs in sensor front-ends.

Availability

MAX419CPD is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor modules, and battery-powered data loggers requiring stable component supply and long-term production continuity.

Supply support for MAX419CPD 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 industrial, medical, and communications applications.

The MAX406/MAX407/MAX409/MAX417–MAX419 family was engineered specifically for ultra-low-power, single-supply sensor signal conditioning - prioritizing sub-pA input bias, rail-to-rail output, and guaranteed microamp quiescent current across temperature.

FAQ

What is the maximum supply current specification for MAX419CPD per amplifier?

The MAX419CPD is guaranteed to draw no more than 1.2µA of supply current per amplifier across the full 0°C to +70°C operating temperature range and over the entire +2.7V to +16V supply voltage range. This value is measured at V_CC = +5V and represents the absolute maximum limit - typical current is lower. This specification makes the MAX419CPD suitable for multi-year battery operation in remote sensing nodes.

Does MAX419CPD support rail-to-rail input common-mode voltage?

No, the MAX419CPD does not support rail-to-rail input common-mode voltage. Its input common-mode range extends from V_EE (ground in single-supply use) to (V_CC – 1.2V). This allows direct interfacing with grounded sensors but excludes operation at the positive rail. The output, however, is rail-to-rail within 20mV of both supply rails. This asymmetry is intentional to optimize input stage biasing and low-current performance in the MAX419CPD.

What package type and pin count does MAX419CPD use?

The MAX419CPD uses a 14-pin plastic dual in-line package (DIP) with 0.300-inch body width and 0.100-inch pin pitch. This through-hole package is designated as P14-3 per Maxim's package documentation (document #21-0043) and is compatible with standard DIP sockets and wave-soldering processes. It contains four independent op-amps with dedicated input and output pins for each channel plus shared supply connections.

Can MAX419CPD operate from a single 3.3V supply?

Yes, the MAX419CPD is fully specified to operate from a single +3.3V supply. Its minimum operating voltage is +2.7V, and all DC and AC parameters - including input common-mode range, output swing, gain-bandwidth product, and supply current - are guaranteed over this condition. At +3.3V, the MAX419CPD delivers rail-to-rail output swing (within 20mV of 0V and 3.3V) and supports input signals down to ground, making it ideal for modern low-voltage embedded systems.

Is MAX419CPD pin-compatible with other devices in the MAX417–MAX419 family?

Yes, all 14-pin variants in the MAX417–MAX419 family - including MAX417CPD, MAX418CPD, and MAX419CPD - share identical pinouts and package footprints. Differences lie solely in internal amplifier count (quad for MAX417/MAX418/MAX419) and electrical specifications such as input offset voltage, gain-bandwidth, and supply current. This allows drop-in replacement during design iteration or qualification without PCB changes, provided the target application aligns with the selected variant's performance envelope.