Analog Devices Inc./Maxim Integrated MAX6177AASA+T

Overview

MAX6177AASA+T from Maxim Integrated is a high-precision, low-noise 3.3V voltage reference with integrated temperature sensor output. It delivers ±0.06% initial accuracy, 3ppm/°C max temperature coefficient over –40°C to +125°C, and 5µV_P-P (0.1Hz–10Hz) noise - enabling use in 16-bit+ ADC/DAC systems requiring stable excitation or calibration references in automotive and industrial instrumentation.

For engineers reviewing the MAX6177AASA+T datasheet, MAX6177AASA+T pinout, MAX6177AASA+T application, or MAX6177AASA+T equivalent, key selection criteria include its TRIM-adjustable output, TEMP pin's 2.1mV/°C linear transducer response, no-output-capacitor stability, AEC-Q100-compatibility (for /V variants), and sourcing capability up to 30mA under wide input range (5.3V to 40V).

Technical Context

The MAX6177AASA+T employs bandgap-based architecture with proprietary curvature-correction circuitry and laser-trimmed thin-film resistors to achieve ultra-low drift and tight initial tolerance. Its internal TEMP output is directly proportional to die temperature (630mV at +25°C, 2.1mV/°C), enabling on-chip thermal monitoring without external sensors.

It features a dedicated TRIM terminal allowing ±6% output adjustment via external resistive divider, while maintaining stability across capacitive loads up to 100µF - eliminating mandatory bypass capacitors and simplifying layout in space-constrained applications.

Key Specifications

Pinout & Package

MAX6177AASA+T is housed in an 8-pin SO package (S8+4 outline, JEDEC MO-153, 150mil width). Pin 1 and 8 are internally connected (I.C.), Pin 7 is no-connect (N.C.). The device requires no external output capacitor for stability and supports capacitive loads up to 100µF.

Key Features

Applications

Equivalent & Alternatives

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

Compared with REF5033IDR and ADR4533BRZ, the MAX6177AASA+T uniquely combines 3.3V reference performance with a calibrated linear temperature transducer in one SO-8 package - reducing system-level BOM, calibration steps, and thermal uncertainty in automotive and industrial sensing applications.

Availability

MAX6177AASA+T is available at Aetrix Electronics and suitable for automotive battery management, industrial data acquisition, portable medical instrumentation, and calibration equipment requiring stable component supply with guaranteed long-term continuity.

Supply support for MAX6177AASA+T 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 high-performance analog and mixed-signal semiconductor solutions for industrial, automotive, communications, and computing markets.

The MAX6177AASA+T belongs to the MAX6173–MAX6177 family of precision voltage references with integrated temperature sensors - engineered specifically for applications demanding simultaneous high-accuracy voltage referencing and on-die thermal monitoring in harsh environments.

FAQ

What is the output voltage tolerance and temperature coefficient of the MAX6177AASA+T?

The MAX6177AASA+T has a nominal output voltage of +3.3V with ±0.06% initial accuracy (3.298V to 3.302V at +25°C) and a maximum temperature coefficient of 3ppm/°C over the full –40°C to +125°C operating range. These specifications are guaranteed by design and 100% tested at +25°C, making the MAX6177AASA+T suitable for high-resolution data converter applications where drift must remain below 0.5 LSB in 16-bit systems.

Does the MAX6177AASA+T require an output bypass capacitor for stability?

No, the MAX6177AASA+T does not require an output bypass capacitor for stability. It is inherently stable with capacitive loads ranging from 0 to 100µF. This eliminates the need for external output capacitance in most applications, saving PCB area and reducing component count - a key advantage in space-constrained designs such as portable medical devices and automotive ECUs where the MAX6177AASA+T is commonly deployed.

How is the TEMP output of the MAX6177AASA+T used, and what is its accuracy?

The TEMP pin of the MAX6177AASA+T provides a voltage linearly proportional to die temperature: 630mV at +25°C with a slope of 2.1mV/°C. Accuracy is typically ±1.5°C over –40°C to +125°C when self-heating is minimized. The output is unbuffered and intended for high-impedance ADC inputs; it enables real-time thermal monitoring without external sensors - a critical feature in the MAX6177AASA+T for automotive battery management and industrial safety systems.

Can the output voltage of the MAX6177AASA+T be adjusted, and how?

Yes, the MAX6177AASA+T output voltage can be trimmed ±6% using the TRIM pin. Connect a resistive divider between OUT and GND, with the wiper (or center tap) connected to TRIM. The output change follows ∆V_OUT = 2 × (V_TRIM − V_OUT/2) × k, where k ≈ ±6%. This allows factory calibration to compensate for system-level gain errors - a capability not found in standard references like the REF5033IDR or ADR4533BRZ, making the MAX6177AASA+T especially valuable in calibrated instrumentation.

What is the supply current and input voltage range for the MAX6177AASA+T?

The MAX6177AASA+T draws 320µA typical quiescent supply current at +25°C (max 500µA), supporting low-power and battery-operated applications. Its input voltage range is +5.3V to +40V - sufficient to accommodate 12V/24V/48V industrial buses and automotive systems with load-dump transients. This wide VIN range, combined with 30mA sourcing capability, allows the MAX6177AASA+T to directly power downstream analog circuitry without additional regulators.