Analog Devices Inc./Maxim Integrated MAX6043BAUT10

Overview

MAX6043BAUT10 from Maxim Integrated is a precision +10.0V voltage reference IC designed for high-accuracy analog signal conditioning in demanding measurement and conversion systems. It delivers 0.1% initial accuracy, 20ppm/°C max temperature coefficient, and operates from +12V to +40V supply across –40°C to +125°C. Its low 320µA quiescent current and stability with up to 100µF capacitive loads make it suitable for battery-powered 16-bit ADC/DAC reference applications.

For engineers reviewing the MAX6043BAUT10 datasheet, MAX6043BAUT10 pinout, MAX6043BAUT10 application, or MAX6043BAUT10 equivalent, this page provides verified technical context, real-world design implications of key specs (e.g., 19µV_P-P noise at 10V output, 390µs turn-on settling), and validated alternative options for automotive-grade precision references.

Technical Context

The MAX6043BAUT10 uses bandgap-based architecture with curvature-correction circuitry and laser-trimmed thin-film resistors to achieve 20ppm/°C max tempco and 0.1% initial accuracy over –40°C to +125°C. It features dual-output force-sense topology (OUTF/OUTS) enabling Kelvin sensing to reject PCB trace resistance effects.

It draws only 320µA supply current while sourcing up to 10mA or sinking 0.6mA, and remains stable without external output capacitance-enabling compact layout in space-constrained industrial sensors and automotive ECUs where long-term drift (<150ppm) and thermal hysteresis must be minimized.

Key Specifications

Pinout & Package

The MAX6043BAUT10 is housed in a RoHS-compliant 6-pin SOT23 package (outline U6FH-6, land pattern 90-0175), measuring 2.9mm × 1.6mm × 1.1mm with gull-wing leads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6043AAUT10#TG16, the MAX6043BAUT10 offers lower cost and adequate performance for 16-bit systems; compared with ADR4510BRZ, it trades off absolute precision for 15× lower quiescent current-critical for portable medical and industrial IoT devices.

Availability

MAX6043BAUT10 is available at Aetrix Electronics and suitable for industrial data acquisition, automotive battery monitoring, and portable test equipment requiring stable component supply with guaranteed long-term availability and automotive-grade qualification.

Supply support for MAX6043BAUT10 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, automotive, and communications markets.

The MAX6043 product line delivers precision voltage references optimized for high-voltage input operation (up to +40V) and extended temperature range performance in harsh environments like engine control and factory automation.

FAQ

What is the maximum capacitive load the MAX6043BAUT10 can drive while remaining stable?

The MAX6043BAUT10 is stable with capacitive loads from 0µF to 100µF on its OUTF pin without requiring external compensation. This eliminates the need for an output bypass capacitor in most applications, saving PCB area and reducing BOM count. Stability is maintained regardless of load current (0–10mA) or temperature (–40°C to +125°C), as confirmed in the datasheet's Typical Operating Characteristics (Figures toc03–toc06).

Does the MAX6043BAUT10 require an input bypass capacitor?

Yes-the MAX6043BAUT10 requires a 0.1µF ceramic capacitor placed as close as possible to the IN pin (Pin 4) and GND (Pin 2) to ensure optimal line-transient response and PSRR performance. While the device functions without it, omitting this capacitor degrades rejection of supply ripple above 10kHz (per Figure toc11/toc12) and increases susceptibility to noise coupling in noisy automotive or industrial power rails.

How does the force-sense (OUTF/OUTS) configuration improve accuracy in the MAX6043BAUT10?

The MAX6043BAUT10's OUTF (Pin 5) and OUTS (Pin 6) pins implement a Kelvin connection: OUTF delivers current to the load, while OUTS senses voltage directly at the load node. This cancels voltage drop across PCB traces or connectors between the IC and load-enabling ±0.1% accuracy even with 1Ω series resistance. This is critical for remote sensor interfaces or modular systems where reference routing spans multiple board sections.

What is the minimum input-to-output differential voltage required for the MAX6043BAUT10 at full 10mA load?

At 10mA load and +125°C, the MAX6043BAUT10 requires a minimum 2.5V input-to-output differential (i.e., VIN ≥ +12.5V for VOUT = +10.0V), as shown in Figure toc10. At room temperature and light loads (<1mA), the dropout drops to ~0.5V. Designers must ensure sufficient headroom across the full operating temperature and current range to avoid regulation loss and increased output drift.

Is the MAX6043BAUT10 qualified for automotive applications?

Yes-the MAX6043BAUT10 is specified and tested for operation across –40°C to +125°C ambient temperature and is manufactured in an AEC-Q100 stress-qualified process. Its 20ppm/°C tempco, 150ppm thermal hysteresis, and robust short-circuit protection meet requirements for automotive body electronics, battery management, and ADAS subsystems where reliability under thermal cycling is mandatory.