MAX6682MUA+ by Analog Devices

Thermistor-to-Digital Converter


The MAX6682 converts an external thermistor's temperature-dependent resistance directly into digital form. The thermistor and an external fixed resistor form a voltage-divider that is driven by the MAX6682's internal voltage reference. The MAX6682 measures the voltage across the external resistor and produces a 10-bit + sign output code dependent on that voltage. The MAX6682 does not linearize the highly nonlinear transfer function of a typical negative temperature coefficient (NTC) thermistor, but it does provide linear output data over limited temperature ranges when used with an external resistor of the correct value. Over the 0°C to +50°C temperature range, the MAX6682 produces output data that is scaled to 8 LSBs/°C (for 0.125°C resolution), provided that the correct thermistor and external resistor values are used. Other temperature ranges can be easily accommodated, but do not necessarily yield data scaled to an even number of LSBs per degree. The 3-wire SPI™-compatible interface can be readily connected to a variety of microcontrollers. The MAX6682 is a read-only device, simplifying use in systems where only temperature data is required. Power-management circuitry reduces the average thermistor current, minimizing self-heating. Between conversions, supply current is reduced to 21µA (typ). The internal voltage reference is shut down between measurements. The MAX6682 is available in a small, 8-pin µMAX package and is specified over the -55°C to +125°C temperature range.

Where to Buy

Prices starting from US$2.48

Distributor Stock
Logo for Farnell
Farnell
from US$3.26
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Chip One Stop
from US$2.48
459
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element14
from US$3.46
241
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Analog Devices
from US$3.34
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Newark Electronics
from US$4.43
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Features

Converts Thermistor Temperature to Digital Data
Low Average Thermistor Current Minimizes Self-Heating Errors
Low Supply Current, 21µA (typ) Including 10kΩ Thermistor Current
Internal Voltage Reference Isolates Thermistor from Power-Supply Noise
10-Bit Resolution
Accommodates Any Thermistor Temperature Range
Output Data Scaled for Direct Temperature Readings from 0°C to +50°C
Simple SPI-Compatible Interface
Small, 8-Pin µMAX Package

Specifications

Sensor Type Remote
# Channels One
Interface 3-Wire/SPI
Functions Thermistor-to-Digital Converter
Parasite Pwr. No
Temp. Resolution (bits) 10
Oper. Temp. (°C) -55 to +125
Package/Pins UMAX/8
BudgetaryPrice (See Notes) 2.48


MAX6682MUA+ Sensors & Transducers by Analog Devices

TEMPERATURE SENSOR UMAX-8

Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

IC Output Type Digital
Sensing Accuracy Range -
Sensing Temperature Min -55°C
Sensing Temperature Max 125°C
Sensor Case Style µMAX
No. of Pins 8Pins
Supply Voltage Min 3V
Supply Voltage Max 5.5V
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant To Be Advised
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

TEMPERATURE SENSOR, UMAX-8 | element14
Thermistor-to-Digital Converte | Analog Devices
Temperature Sensor, Umax-8 | Newark Electronics

Frequently Asked Questions

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Is the MAX6682MUA+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for MAX6682MUA+ have stock available?

Authorised distributors including Chip One Stop, element14, Farnell, Analog Devices and Newark Electronics have stock available or on a lead time for MAX6682MUA+ .

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