Analog Devices Inc./Maxim Integrated MAX6610AUT

Overview

MAX6610AUT from Maxim Integrated is a precision analog temperature sensor with integrated 2.560V voltage reference, designed for ADC reference and temperature-sensing functions in single-chip solutions. It operates from 3.0V to 5.5V, delivers ±1°C accuracy over –40°C to +125°C, draws ≤150µA typical supply current, and outputs a linear 10mV/°C temperature voltage (0.75V at 0°C). It is used in system thermal monitoring where ADC bit weight alignment (e.g., 1°C per 8-bit LSB) is required.

For engineers reviewing the MAX6610AUT datasheet, MAX6610AUT pinout, MAX6610AUT application, or MAX6610AUT equivalent, key selection criteria include its 2.560V reference output, 10mV/°C temperature slope, shutdown current ≤1µA, SOT23-6 package compatibility, and guaranteed performance across automotive-grade temperature range.

Technical Context

The MAX6610AUT integrates a bandgap-based temperature sensor and a curvature-compensated series voltage reference on a single BiCMOS die. Its TEMP output provides a ratiometric, linear voltage (0.75V + 10mV/°C) referenced to GND, while REF delivers a stable 2.560V ±0.5% output with ±10ppm/°C typical TC and <100µV_P-P noise (0.1Hz–10kHz).

It features active-low SHDN control that disables internal circuitry, pulling REF to GND via 150kΩ and placing TEMP in high-Z state. Turn-on settling time is 300µs (REF) and 500µs (TEMP) to specified accuracy thresholds after VCC or SHDN assertion.

Key Specifications

Pinout & Package

MAX6610AUT is housed in a 6-pin SOT23-6 package (JEDEC MO-178AA), with pins arranged in standard top-view configuration and pin 1 marked by dot or notch. The package uses gull-wing leads, rated for 260°C reflow, and requires 0.1µF VCC-to-GND bypass capacitance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar temperature-sensor-and-reference applications.

Compared with LM60QIM3X/NOPB and ADT7310TRZ, the MAX6610AUT uniquely combines matched analog TEMP and REF outputs in one SOT23-6 package, enabling true single-component ADC interfacing with guaranteed 1°C/8-bit-LSB scaling - reducing design complexity and qualification effort for analog-centric systems.

Availability

MAX6610AUT is available at Aetrix Electronics and suitable for motor drive thermal protection, industrial PLC temperature input modules, smart HVAC thermostat sensor nodes, and automotive cabin temperature monitors requiring stable component supply across extended temperature ranges.

Supply support for MAX6610AUT 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, automotive, and communications applications.

The MAX6610AUT belongs to Maxim's precision temperature sensor and reference family, engineered to simplify thermal monitoring in resource-constrained systems by integrating two critical analog functions - sensor and reference - into one ultra-small package with guaranteed ADC-ready scaling.

FAQ

What is the reference voltage tolerance and temperature coefficient of the MAX6610AUT?

The MAX6610AUT provides a 2.560V reference output with ±0.5% initial tolerance over temperature and ±10ppm/°C typical temperature coefficient (–40°C to +85°C). This ensures stable ADC full-scale calibration across wide ambient ranges without software compensation - a key enabler for consistent 1°C-per-LSB performance in 8-bit systems using the MAX6610AUT.

How does the MAX6610AUT achieve 1°C resolution with an 8-bit ADC?

The MAX6610AUT achieves 1°C resolution with an 8-bit ADC through coordinated design: its 2.560V reference sets a 10mV/LSB full-scale step, while its temperature output has a 10mV/°C slope (0.75V + 10mV/°C). This creates exact 1°C-per-LSB mapping - no gain/offset correction needed in firmware. The MAX6610AUT thus delivers calibrated digital temperature directly from standard ADC hardware.

What is the maximum capacitive load the MAX6610AUT REF and TEMP outputs can drive?

The MAX6610AUT REF output can drive up to 1µF capacitive load without instability, while the TEMP output supports up to 0.2µF. These values are validated for transient stability under step-load conditions. Using capacitors within these limits improves overshoot/undershoot response during supply or load transients - especially valuable in noisy industrial or automotive power environments where the MAX6610AUT is commonly deployed.

Does the MAX6610AUT require external calibration for accurate temperature measurement?

No, the MAX6610AUT requires no external calibration. Its temperature sensor gain and reference voltage are factory-laser-trimmed to match precisely - ensuring the 10mV/°C TEMP slope and 2.560V REF output deliver 1°C-per-8-bit-LSB accuracy out-of-the-box. This eliminates production-line trimming steps and reduces test time, making the MAX6610AUT ideal for high-volume applications like HVAC controls and motor drives.

What happens to the REF and TEMP outputs during shutdown mode of the MAX6610AUT?

When SHDN is driven low, the MAX6610AUT enters shutdown mode: REF is actively pulled to GND through an internal 150kΩ resistor, and TEMP transitions to high-impedance (Hi-Z) state. Supply current drops to ≤1µA. This behavior prevents back-driving or loading of downstream circuits - critical for preserving signal integrity in multi-channel systems where the MAX6610AUT shares a common ADC or reference rail.