Analog Devices Inc./Maxim Integrated MAX6033BAUT25#TG16

Overview

MAX6033BAUT25#TG16 from Maxim Integrated is a precision 2.5V series voltage reference IC with ±0.20% initial accuracy, 15ppm/°C max temperature coefficient over –40°C to +125°C, and 200mV max dropout voltage at 1mA load. It delivers ultra-low 40µA quiescent current and supports capacitive loads up to 100µF, making it suitable for high-resolution ADC/DAC biasing in automotive-grade instrumentation.

For engineers reviewing the MAX6033BAUT25#TG16 datasheet, MAX6033BAUT25#TG16 pinout, MAX6033BAUT25#TG16 application, or MAX6033BAUT25#TG16 equivalent, key selection criteria include output stability under wide-temperature operation, low-noise performance (16µV_P-P, 0.1Hz–10Hz), and compatibility with single-supply 2.5V reference architectures requiring minimal external components.

Technical Context

The MAX6033BAUT25#TG16 employs bandgap-based series architecture with laser-trimmed thin-film resistors and post-package trimming to achieve tight initial accuracy and long-term stability (40ppm/1000hr). Its dual-output force-sense topology (OUTF/OUTS) enables precise regulation independent of PCB trace resistance and load variations.

It operates across 2.7V to 12.6V input range with excellent line regulation (≤25µV/V at +25°C) and load regulation (0.001mV/mA at +25°C), supporting stable reference generation even under dynamic supply and load conditions typical in industrial sensor signal chains and automotive control units.

Key Specifications

Pinout & Package

The MAX6033BAUT25#TG16 is housed in a RoHS-compliant 6-pin SOT23 package (U6F+6 outline), optimized for space-constrained automotive and industrial PCBs with thermal resistance θ_JA = 134.4°C/W on four-layer board.

Key Features

Applications

Equivalent & Alternatives

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

Compared with REF3025AIDBZR and ADR3425ARJZ-R7, the MAX6033BAUT25#TG16 uniquely combines automotive-grade temperature stability, ultra-low IQ, and force-sense architecture-enabling high-accuracy remote regulation in space- and power-sensitive embedded systems without sacrificing long-term reliability.

Availability

MAX6033BAUT25#TG16 is available at Aetrix Electronics and suitable for automotive sensor modules, portable test equipment, and industrial process controllers requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for MAX6033BAUT25#TG16 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 and mixed-signal ICs for demanding industrial, automotive, and medical applications.

The MAX6033BAUT25#TG16 belongs to the MAX6033 series of high-precision, low-dropout series voltage references engineered specifically for automotive-grade signal conditioning and high-resolution data conversion systems operating from –40°C to +125°C.

FAQ

What is the maximum capacitive load supported by the MAX6033BAUT25#TG16?

The MAX6033BAUT25#TG16 is stable with output capacitance ranging from 0.1µF to 100µF. This wide range allows designers to select optimal bypassing for EMI filtering or transient response without risking oscillation. The 0.1µF minimum ensures stability under all operating conditions, while the 100µF upper limit accommodates large bulk capacitors used in noisy industrial environments. Always place the capacitor as close as possible to the OUTF and GND pins.

Does the MAX6033BAUT25#TG16 require an input capacitor?

The MAX6033BAUT25#TG16 does not require an input capacitor for basic stability, but a 0.1µF ceramic capacitor placed close to the IN pin is recommended for optimal line-transient performance. This capacitor suppresses high-frequency noise and supply ripple that could otherwise modulate the reference output. In low-noise applications such as precision data acquisition, omitting the input capacitor may degrade PSRR above 10kHz, as shown in the typical operating characteristics graphs.

How does the force-sense (OUTF/OUTS) configuration improve accuracy in the MAX6033BAUT25#TG16?

The MAX6033BAUT25#TG16 uses separate OUTF (force) and OUTS (sense) pins to implement Kelvin sensing, eliminating errors caused by voltage drop across PCB traces or interconnects. By routing the sense line directly to the load point, the device regulates voltage precisely at the destination rather than at its own output pad. This ensures <±0.5mV regulation error even with 100mΩ trace resistance at 15mA load - a critical advantage in high-accuracy analog signal chains where trace IR drop would otherwise dominate total error budget.

What is the turn-on settling time specification for the MAX6033BAUT25#TG16?

The MAX6033BAUT25#TG16 settles to within ±0.01% of final value in 500µs under typical conditions (VIN = 5V, COUT = 0.1µF, TA = +25°C). Settling time increases with larger output capacitance or lower input voltage margin - up to 2ms at minimum dropout and maximum load. This fast turn-on enables use in power-gated subsystems and wake-on-event architectures where rapid analog subsystem readiness is required after sleep mode.

Is the MAX6033BAUT25#TG16 qualified for automotive applications?

Yes, the MAX6033BAUT25#TG16 is specified for the automotive temperature range (–40°C to +125°C) and packaged in a RoHS-compliant SOT23 variant (U6F+6) with JEDEC-standard thermal characteristics. While not explicitly AEC-Q200 certified in this datasheet, its guaranteed parametric performance across –40°C to +125°C, 150ppm temperature hysteresis, and 40ppm/1000hr long-term stability align with requirements for automotive sensor and control modules. System-level qualification remains the responsibility of the end customer.