Analog Devices Inc./Maxim Integrated MAX410BEPA

Overview

The MAX410BEPA from Maxim Integrated is a single, precision, low-noise operational amplifier designed for high-speed, low-voltage signal conditioning in instrumentation and measurement systems. It delivers 2.4nV/√Hz input voltage-noise density at 1kHz, 28MHz unity-gain bandwidth, and 4.5V/µs slew rate while operating from ±2.4V to ±5V supplies and consuming only 2.5mA per amplifier. It is commonly used in ultra-low-noise instrumentation amplifiers and infrared detector front-ends.

For engineers reviewing the MAX410BEPA datasheet, MAX410BEPA pinout, MAX410BEPA application, or MAX410BEPA equivalent, key selection considerations include its guaranteed −40°C to +85°C temperature range, 8-pin plastic DIP package, low 250µV max offset voltage (B-grade), and bipolar-input architecture optimized for voltage-noise-critical analog signal chains.

Technical Context

The MAX410BEPA employs a bipolar input stage engineered to minimize voltage noise without compromising DC accuracy or AC stability - achieving <2.4nV/√Hz at 1kHz while maintaining 115dB min open-loop gain and 105dB min CMRR over its full operating temperature range. Its design avoids input current-limiting resistors to preserve noise performance, relying instead on back-to-back clamp diodes for ±0.1V differential input protection.

It supports stable unity-gain operation with 28MHz bandwidth and drives 2kΩ loads to ±3.5V output swing from ±5V supplies. The device remains stable driving up to 3900pF capacitive loads in voltage-follower configuration, and its noise-optimal source resistance is below 10kΩ - making it suitable for transducer interfaces where resistor noise dominates.

Key Specifications

Pinout & Package

MAX410BEPA is housed in an 8-pin plastic DIP package (package code P8-1), with standard op-amp pinout compatible with industry-wide PCB footprints for single amplifiers.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-noise, precision op amp applications.

Compared with OPA211IDR and LT1028ACN8#PBF, the MAX410BEPA uniquely balances ultra-low voltage noise (2.4nV/√Hz), low supply current (2.5mA), and wide dual-supply flexibility (±2.4V to ±5.25V) in a through-hole DIP package - making it optimal for cost-sensitive, thermally demanding, or legacy-compatible industrial instrumentation.

Availability

MAX410BEPA is available at Aetrix Electronics and suitable for industrial instrumentation, infrared sensing, and precision audio applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX410BEPA 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 semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and consumer applications.

The MAX410BEPA belongs to Maxim's precision op amp product line, engineered specifically for low-noise, wideband signal conditioning in measurement and sensor interface applications where voltage-noise density and DC accuracy are critical.

FAQ

What is the maximum capacitive load the MAX410BEPA can drive stably in unity-gain configuration?

The MAX410BEPA remains stable driving up to 3900pF in voltage-follower (unity-gain) configuration, as verified in the datasheet's Typical Operating Characteristics. For loads exceeding this value, an output isolation resistor (e.g., 10Ω) must be added between the amplifier output and the capacitive load to restore phase margin and prevent oscillation. This behavior is consistent across all temperature grades, including the −40°C to +85°C range of the MAX410BEPA.

Does the MAX410BEPA require external offset nulling in precision applications?

The MAX410BEPA includes dedicated offset-null pins (Pins 1 and 5) supporting external trimming via a 10kΩ potentiometer, enabling adjustment of up to ±450µV. While the B-grade version guarantees ≤250µV max input offset voltage at +25°C, nulling is recommended for applications requiring sub-50µV DC accuracy over temperature - especially in high-gain instrumentation amplifier configurations where offset drift accumulates.

Is the MAX410BEPA pin-compatible with other op amps in the same DIP-8 footprint?

The MAX410BEPA uses the industry-standard single-op-amp pinout (Pin 2 = −IN, Pin 3 = +IN, Pin 6 = OUT, Pin 4 = V−, Pin 7 = V+), matching generic DIP-8 op amps like the OP27 or AD797. However, it is not functionally or electrically pin-compatible with those parts due to differences in input structure (bipolar vs. JFET/FET), noise profile, and supply requirements. Direct substitution requires validation of noise, offset, bandwidth, and stability in the target circuit.

What is the minimum total supply voltage for reliable operation of the MAX410BEPA?

The MAX410BEPA is fully specified down to ±2.4V (4.8V total), and functional operation is guaranteed at this level. Output swing degrades linearly below ±5V - e.g., at ±2.4V supplies, the output delivers approximately ±1.7V into 2kΩ. PSRR remains ≥90dB across the full ±2.4V to ±5.25V range, ensuring robust rejection of supply ripple even at minimum voltage.

How does the MAX410BEPA's input protection differ from conventional op amps?

Unlike most op amps that use series current-limiting resistors (which increase input noise), the MAX410BEPA omits them to preserve its 2.4nV/√Hz noise performance. Instead, it integrates back-to-back clamp diodes between inputs, providing ±0.1V differential protection. For higher differential voltages, external 200Ω–1kΩ series resistors must be added to limit input current to <20mA - a deliberate trade-off favoring noise-critical applications over ruggedness.