MAX6666AUT+T datasheet(1/7 Pages) MAXIM

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General Description

The MAX6666/MAX6667 are high-accuracy, low-cost,

low-power temperature sensors with a single-wire

output. The MAX6666/MAX6667 convert the ambient

temperature into a ratiometric PWM output with tempera-

ture information contained in the duty cycle of the output

square wave. The MAX6666 has a push-pull output and

the MAX6667 has an open-drain output.

The MAX6666/MAX6667 operate at supply voltages from

+3V to +5.5V. The typical unloaded supply current at 5.0V

is 200µA. Both devices feature a single-wire output that

minimizes the number of pins necessary to interface with

a microprocessor (µP). The output is a square wave with

a nominal frequency of 35Hz (±20%) at +25°C. The output

format is decoded as follows:

Temperature (°C) = 235 - (400 x t1)/t2

Where t1 is fixed with a typical value of 10ms and t2 is

modulated by the temperature (Figure 1). The MAX6666/

MAX6667 operate from -40°C to +125°C and are avail-

able in space-saving SOT23 packages.

Applications

● Process Control

● Industrial

● HVAC and Environmental Control

● µP and µC Temperature Monitoring

Features

● Simple Single-Wire PWM Output

● ±1.0°C Accuracy at +25°C

● High Accuracy

±1°C at TA = +30°C

±2.5°C at TA = +10°C to +50°C

● Operate Up to +125°C

● Low 200µA Typical Current Consumption

● Small SOT23 package

+Denotes a lead(Pb)-free/RoHS-compliant package.

T = Tape and reel.

PART

TEMP RANGE

PIN-

PACKAGE

TOP

MARK

MAX6666AUT+T

-40°C to +125°C 6 SOT23

AATF

MAX6667AUT+T

-40°C to +125°C 6 SOT23

AATG

VCC

I.C.

GND

1

+

5

6 I.C.

I.C.

DOUT

MAX6666

MAX6667

SOT23

2

3

4

TOP VIEW

VCC

+3.3V

GND

DOUT

t1

t2

µ

C

INPUT TO

TIMER/COUNTER

MAX6666

MAX6667

MAX6666/MAX6667

High-Accuracy PWM Output Temperature Sensors

19-2138; Rev 4; 4/14

Pin Configuration

Typical Operating Circuit

Ordering Information

Số phần tương tự - MAX6666AUT+T

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Maxim Integrated Produc...	MAX6666AUT+T	124Kb / 7P	High-Accuracy PWM Output Temperature Sensors Rev 3; 8/09

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Mô tả tương tự - MAX6666AUT+T

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Maxim Integrated Produc...	MAX6666	268Kb / 8P	High-Accuracy PWM Output Temperature Sensors Rev 1; 12/03
Maxim Integrated Produc...	MAX6666	124Kb / 7P	High-Accuracy PWM Output Temperature Sensors Rev 3; 8/09
Texas Instruments	TMP235	274Kb / 13P	Low-Power, High-Accuracy Analog Output Temperature Sensors
	TMP235	974Kb / 20P	Low-Power, High-Accuracy Analog Output Temperature Sensors
	TMP235_018	975Kb / 20P	Low-Power, High-Accuracy Analog Output Temperature Sensors
	TMP235_1808	1Mb / 25P	Low-Power, High-Accuracy Analog Output Temperature Sensors
	TMP235-Q1	575Kb / 20P	Automotive Grade, High-Accuracy Analog Output Temperature Sensors
	TMP235-Q1	688Kb / 22P	Automotive Grade, High-Accuracy Analog Output Temperature Sensors
Maxim Integrated Produc...	MAX6672	1Mb / 7P	PWM Output Temperature Sensors in SC70 Packages 2014
Maxim Integrated Produc...	MAX6676	1Mb / 7P	Low-Voltage, 1.8kHz PWM Output Temperature Sensors 2015

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