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MAX6676-MAX6677

更新时间： 2024-11-05 22:55:15
品牌 Logo 应用领域
美信 - MAXIM 传感器温度传感器
页数 文件大小 规格书
7页 163K
描述
Low-Voltage, 1.8kHz PWM Output Temperature Sensors

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MAX6676-MAX6677 数据手册

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19-2660; Rev 1; 1/03  
Low-Voltage, 1.8kHz PWM Output Temperature  
Sensors  
General Description  
Features  
The MAX6676/MAX6677 are high-accuracy, low-power  
temperature sensors with a single-wire output. The  
MAX6676/MAX6677 convert the ambient temperature  
into a ratiometric PWM output with temperature informa-  
tion contained in the duty cycle of the output square  
wave. The MAX6676 has an open-drain output and the  
MAX6677 has a push-pull output.  
ꢀ Simple Single-Wire, 1.8kHz PWM Output  
ꢀ Operates Down to 1.8V  
ꢀ High Accuracy  
±1.ꢀ5° at ꢁ = +2ꢀ5°  
A
±±.ꢂ5° at ꢁ = ꢂ5° to +8ꢀ5°  
A
ꢀ Operates from -4ꢂ5° to +12ꢀ5°  
ꢀ Low 8ꢂµA ꢁypical °urrent °onsumption  
ꢀ Small 6-Pin SOꢁ2± Package  
The MAX6676/MAX6677 are specified for operation with  
power-supply voltages from 1.8V to 3.6V, or from 3.6V to  
5.5V (MAX6676 only). The typical unloaded supply cur-  
rent is 80µA. All 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 1.8kHz (±±0ꢀ) at ꢁ±5ꢂ°.  
The output format is decoded as follows:  
Ordering Information  
TEMP  
RANGE  
PIN-  
PACKAGE  
PART  
✕
Temperature (ꢂ°) = 398.15 (t1 / t±) - ±73.15  
MAX6676AUT3-T  
MAX6676AUT5-T  
MAX6677AUT3-T  
-40ꢂC to +125ꢂC  
-40ꢂC to +125ꢂC  
-40ꢂC to +125ꢂC  
6 SOT23-6  
6 SOT23-6  
6 SOT23-6  
Where t is fixed with a typical value of 0.±4ms and t is  
1
±
modulated by the temperature. The MAX6676/  
MAX6677 operate from -40ꢂ° to ꢁ1±5ꢂ° and are avail-  
able in space-saving 6-pin SOT±3 packages.  
Applications  
Selector Guide  
Process °ontrol  
SUPPLY  
OUTPUT  
TYPE  
TOP  
VOLTAGE  
MARK  
PART  
Industrial  
RANGE (V)  
HVA° and Environmental °ontrol  
Automotive  
MAX6676AUT3  
MAX6676AUT5  
MAX6677AUT3  
Open drain  
Open drain  
Push-pull  
1.8 to 3.6  
3.6 to 5.5  
1.8 to 3.6  
ABBF  
ABBG  
ABBH  
Portable Devices  
µP and µ° Temperature Monitoring  
Isolated Temperature Sensing  
Typical Operating Circuit  
Pin Configuration  
V
CC  
TOP VIEW  
5.1kΩ*  
V
CC  
DOUT  
1
2
3
6
5
4
GND  
GND  
GND  
INPUT TO  
DOUT  
TIMER/COUNTER  
MAX6676  
MAX6677  
t
GND  
0.1µF  
2
MAX6676  
µC  
t
1
V
CC  
GND  
SOT23  
*REQUIRED ONLY FOR MAX6676.  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at  
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.  
1234567

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