Analog Devices Inc./Maxim Integrated MAX875BCPA

Overview

The MAX875BCPA from Maxim Integrated is a precision +5.0V voltage reference IC with ±0.06% initial accuracy, 20ppm/°C max temperature coefficient, and 450µA max quiescent current, designed for stable biasing in high-resolution data-acquisition systems operating from +7V to +18V supplies.

For engineers reviewing the MAX875BCPA datasheet, MAX875BCPA pinout, MAX875BCPA application, or MAX875BCPA equivalent, this page delivers verified specifications, SO-8 package layout, trim-adjustable output architecture, TEMP-pin temperature monitoring capability, and real-world selection guidance against comparable references for 12-bit ADC/DAC and portable test equipment designs.

Technical Context

The MAX875BCPA implements a laser-trimmed bandgap core with curvature-correction circuitry to achieve low-drift performance across –40°C to +85°C. Its TRIM pin enables ±6% output adjustment via external resistive divider, while the TEMP pin provides a 630mV (typ) output at +25°C with 2.1mV/°C sensitivity for die-temperature sensing.

It sources up to 10mA and sinks up to 2mA, supports capacitive loads up to 100µF without instability, and features 4ppm/V line regulation and 15ppm/mA load regulation - enabling direct use in precision analog signal chains without external buffering.

Key Specifications

Pinout & Package

MAX875BCPA 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 REF5050AIDR and ADR445BRZ, the MAX875BCPA trades 17ppm/°C higher drift and ~2× higher noise for unique on-chip TRIM and TEMP functionality - making it the only SO-8 5V reference that simultaneously supports factory calibration, thermal awareness, and low-power operation in space-constrained portable systems.

Availability

MAX875BCPA is available at Aetrix Electronics and suitable for 12-bit ADCs and DACs, digital multimeters, and portable data-acquisition systems requiring stable component supply with guaranteed long-term availability and consistent parametric performance.

Supply support for MAX875BCPA 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 MAX875BCPA belongs to Maxim's precision voltage reference product line, engineered specifically for applications demanding low drift, low noise, and integrated diagnostics - such as portable instrumentation and battery-operated measurement systems.

FAQ

What is the maximum input voltage for the MAX875BCPA?

The MAX875BCPA supports a supply voltage range of +7V to +18V. Absolute maximum rating for IN-to-GND is +20V, but operation above +18V is not characterized or guaranteed. For reliable long-term performance, maintain VIN ≤ +18V with proper 0.1µF ceramic decoupling at the IN pin.

Can the MAX875BCPA drive a 10µF output capacitor?

Yes, the MAX875BCPA is stable with output capacitance up to 100µF. A 10µF capacitor improves transient response during load steps and reduces output overshoot - especially beneficial in DAC reference buffers and multiplexed sensor systems where rapid settling is required.

How does the TRIM pin on the MAX875BCPA function?

The TRIM pin on the MAX875BCPA accepts a voltage between GND and OUT to adjust the output by ±6% around 5.000V. Connect a 100kΩ potentiometer between OUT and GND, with its wiper to TRIM. The output shifts linearly: 0V at TRIM lowers VOUT by ~300mV; VOUT at TRIM raises it by ~300mV.

What is the purpose of the TEMP pin on the MAX875BCPA?

The TEMP pin on the MAX875BCPA provides a voltage proportional to die temperature: 630mV at +25°C with 2.1mV/°C slope. It serves as a diagnostic output for thermal monitoring, enables simple temperature compensation in reference-dependent circuits, and supports over-temperature warning without external sensors.

Is the MAX875BCPA suitable for 16-bit data converters?

The MAX875BCPA is optimized for 12-bit systems (20ppm/°C drift ≈ 0.003% = <1 LSB at 12 bits). For 16-bit applications, its drift and noise exceed typical requirements; consider REF5050AIDR or ADR445BRZ instead. However, MAX875BCPA can serve as a cost-effective first-stage reference in hybrid architectures where secondary trimming compensates for drift.