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Part Number: MAX6677
Description: The MAX6676/MAX6677 are high-accuracy, low-powertemperature sensors with a single-wire output. The MAX...
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MAX6677
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General Description
MAX6677 General Description
The MAX6676/MAX6677 are high-accuracy, low-powertemperature sensors with a single-wire output. The MAX6676/MAX6677 convert the ambient temperatureinto a ratiometric PWM output with temperature informa-tion contained in the duty cycle of the output squarewave. The MAX6676 has an open-drain output and theMAX6677 has a push-pull output.
The MAX6676/MAX6677 are specified for operation withpower-supply voltages from 1.8V to 3.6V, or from 3.6V to5.5V (MAX6676 only). The typical unloaded supply cur-rent is 80A. All devices feature a single-wire output thatminimizes the number of pins necessary to interfacewith a microprocessor (P). The output is a square wavewith a nominal frequency of 1.8kHz (±20%) at +25.The output format is decoded as follows:
Temperature () = 398.15 * (t1 / t2) - 273.15
Where t1 is fixed with a typical value of 0.24ms and t2 ismodulated by the temperature. The MAX6676/MAX6677 operate from -40 to +125 and are avail-able in space-saving 6-pin SOT23 packages.
MAX6677 Maximum Ratings
(Voltages Referenced to GND)
VCC .....................................................................-0.3V to +6.0V
DOUT (MAX6676).................................................-0.3V to +6.0V
DOUT (MAX6677).......................................-0.3V to (VCC + 0.3V)
DOUT Current....................................................-1mA to +50mA
ESD Protection (DOUT, Human Body Model) .................±2000V
Continuous Power Dissipation (TA = +70)
6-Pin SOT23 (derate 8.7mW/ above +70).............695.7mW
Operating Temperature Range .........................-40 to +125
Storage Temperature Range.............................-65 to +150
Junction Temperature......................................................+150
Lead Temperature (soldering, 10s).................................+300
VCC .....................................................................-0.3V to +6.0V
DOUT (MAX6676).................................................-0.3V to +6.0V
DOUT (MAX6677).......................................-0.3V to (VCC + 0.3V)
DOUT Current....................................................-1mA to +50mA
ESD Protection (DOUT, Human Body Model) .................±2000V
Continuous Power Dissipation (TA = +70)
6-Pin SOT23 (derate 8.7mW/ above +70).............695.7mW
Operating Temperature Range .........................-40 to +125
Storage Temperature Range.............................-65 to +150
Junction Temperature......................................................+150
Lead Temperature (soldering, 10s).................................+300
MAX6677 Features
Simple Single-Wire, 1.8kHz PWM Output
Operates Down to 1.8V
High Accuracy
±1.5 at TA = +25
±3.0 at TA = 0to +85
Operates from -40 to +125
Low 80A Typical Current Consumption
Small 6-Pin SOT23 Package
Operates Down to 1.8V
High Accuracy
±1.5 at TA = +25
±3.0 at TA = 0to +85
Operates from -40 to +125
Low 80A Typical Current Consumption
Small 6-Pin SOT23 Package
MAX6677 Typical Application
Process Control
Industrial
HVAC and Environmental Control
Automotive
Portable Devices
P and C Temperature Monitoring
Isolated Temperature Sensing
Industrial
HVAC and Environmental Control
Automotive
Portable Devices
P and C Temperature Monitoring
Isolated Temperature Sensing
MAX6677
PDF/DataSheet Download
- Datasheet: MAX6677
- File Size: 166241 KB
- Manufacturer: MAXIM [Maxim Integrated Products]
- Click here to Download
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The MAX6676/MAX6677 are high-accuracy, low-powertemperature sensors with a single-wire output. The MAX6676/MAX6677 convert the ambient temperatureinto a ratiometric PWM output with temperature informa-tion contained in the duty cycle of the output squarewave...
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