Analog Devices Inc./Maxim Integrated MAX876BCPA

Overview

MAX876BCPA from Maxim Integrated is a precision +10.0V voltage reference IC with ±0.05% initial accuracy, 20ppm/°C max temperature coefficient, and 29µVRMS (10Hz–1kHz) output noise - designed for high-resolution data acquisition in portable and low-power systems requiring stable, trimmable reference voltage.

For engineers reviewing the MAX876BCPA datasheet, MAX876BCPA pinout, MAX876BCPA application, or MAX876BCPA equivalent, this page delivers verified specifications, SO-8 package layout, temperature-compensated operation, TRIM-adjustable output, and real-world selection guidance for 12-bit to 16-bit ADC/DAC reference design.

Technical Context

The MAX876BCPA employs a proprietary curvature-corrected bandgap core with laser-trimmed thin-film resistors to achieve low drift and high initial accuracy. Its TEMP pin provides a 2.1mV/°C proportional voltage for external temperature compensation or monitoring circuits.

It operates from +12V to +18V input, sources up to 10mA, sinks up to 2mA, and features internal short-circuit protection limiting output current to 60mA when shorted to GND. The TRIM pin enables ±6% output adjustment using a simple resistive divider.

Key Specifications

Pinout & Package

MAX876BCPA is housed in an 8-pin SOIC (SO-8) package with 150-mil body width, JEDEC MS-012 compliant, lead-free (RoHS), and rated for –40°C to +85°C operation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar precision voltage reference applications.

Compared with REF5010AIDR and ADR445BRZ, the MAX876BCPA uniquely combines low quiescent current (≤700µA), integrated temperature-sensing (TEMP pin), and ±6% TRIM adjustability in a standard SO-8 package - making it optimal for portable, cost-sensitive, and thermally compensated designs where moderate drift is acceptable.

Availability

MAX876BCPA is available at Aetrix Electronics and suitable for portable instrumentation, industrial data loggers, and medical device reference circuits requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.

Supply support for MAX876BCPA 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 consumer applications.

The MAX873/MAX875/MAX876 family was designed specifically for precision voltage reference needs in portable, low-power, and thermally demanding systems - emphasizing accuracy, low drift, and integrated diagnostics like TEMP output.

FAQ

What is the maximum input voltage for the MAX876BCPA?

The MAX876BCPA supports a supply input range of +12V to +18V per its electrical characteristics table. Absolute maximum rating for IN-to-GND is +20V, but sustained operation above +18V is not specified and may impact long-term reliability or parametric performance. For robust design, operate within the recommended +12V to +18V window.

Does the MAX876BCPA require an output capacitor for stability?

No, the MAX876BCPA is internally compensated and stable without an output capacitor. It remains stable with capacitive loads up to 100µF. An output capacitor is optional and used only to improve transient response - for example, a 1µF ceramic cap reduces overshoot during load steps. No minimum ESR or specific type is mandated.

How does the TRIM pin function on the MAX876BCPA?

The TRIM pin on the MAX876BCPA accepts a voltage between GND and OUT to adjust the output by ±6% (±600mV). A 100kΩ potentiometer connected between OUT and GND, with its wiper to TRIM, provides full-range adjustment. The relationship is linear: ∆VOUT = 2 × (VTRIM − VOUT/2) × 0.06. Leaving TRIM open retains the factory-set +10.000V output.

Can the TEMP pin on the MAX876BCPA be used for accurate ambient temperature measurement?

The TEMP pin on the MAX876BCPA outputs a voltage proportional to die temperature (630mV at +25°C, 2.1mV/°C), not ambient temperature. Self-heating causes ~1–2°C offset under typical load. For ambient sensing, use with thermal isolation and calibration; for die-temperature monitoring or compensation, it provides direct, monotonic, and repeatable response without external components.

What is the short-circuit protection behavior of the MAX876BCPA?

When the MAX876BCPA output is shorted to GND, internal circuitry limits current to 60mA maximum. When shorted to the IN supply, current is limited to 3mA. This protection is active during both power-up and steady-state operation and prevents damage during test, assembly, or field faults - enabling safe integration into systems without external current-limiting resistors.