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MAX6691 - Four-Channel Thermistor Temperature-to-Pulse-Width Converter

Description

The MAX6691 four-channel thermistor temperature-topulse-width converter measures the temperatures of up to four thermistors and converts them to a series of output pulses whose widths are related to the thermistors’ temperatures.

Features

  • MAX6691 Ordering Information PART MAX6691MUB TEMP RANGE -55°C to +125°C PIN-.

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Datasheet preview – MAX6691

Datasheet Details

Part number MAX6691
Manufacturer Maxim Integrated
File Size 116.52 KB
Description Four-Channel Thermistor Temperature-to-Pulse-Width Converter
Datasheet download datasheet MAX6691 Datasheet
Additional preview pages of the MAX6691 datasheet.

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Full PDF Text Transcription

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19-2304; Rev 0; 1/02 Four-Channel Thermistor Temperature-to-PulseWidth Converter General Description The MAX6691 four-channel thermistor temperature-topulse-width converter measures the temperatures of up to four thermistors and converts them to a series of output pulses whose widths are related to the thermistors’ temperatures. Each of the four thermistors and an external fixed resistor (REXT) form a voltage-divider that is driven by the MAX6691’s internal voltage reference (VREF). VREF and the voltage across REXT are measured and converted to a pulse. The MAX6691 has a single open-drain I/O pin that can be readily connected to a variety of microcontrollers. The microcontroller initiates a conversion by pulling the I/O pin low and releasing it.
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