MAX6691MUB+ by Analog Devices

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

Status: Active
Series: MAX6691
RoHS: Unknown
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The MAX6691 four-channel thermistor temperature-to-pulse-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. When conversion is done, the MAX6691 signals the end of conversion by pulling the I/O pin low once again. The pulse corresponding to the first thermistor is sent immediately after the release of the I/O pin. The on-chip power-management circuitry reduces the average thermistor current to minimize errors due to thermistor self-heating. Between conversions, the MAX6691 falls into a 10µA (max) sleep mode, where the voltage reference is disabled and the supply current is at its minimum. The MAX6691 is available in a 10-pin µMAX package and is specified from -55°C to +125°C temperature range.

Prices starting from US$4.93


Distributor Starting From Stock
Logo for element14 element14 US$7.50
657
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Logo for CoreStaff CoreStaff US$4.93
50
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Logo for Newark Electronics Newark Electronics US$5.33
-
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Features

Simple Single-Wire Interface
Measures Up to Four Thermistor Temperatures
Low-Average Thermistor Current Minimizes Self-Heating Errors
Internal Voltage Reference Isolates Thermistor from Power-Supply Noise
Accommodates Any Thermistor Temperature Range

Specifications

Sensor Type Remote
# Channels Four
Interface PWM
Functions Thermistor-to-Digital Converter
Accuracy (±°C) 1
Parasite Pwr. No
Oper. Temp. (°C) -55 to +125
Package/Pins UMAX/10
BudgetaryPrice (See Notes) 4.57


MAX6691MUB+ Sensors & Transducers by Analog Devices

TEMPERATURE SENSOR UMAX-10

Status: Unknown
Series: -
RoHS: Unknown
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Specifications

IC Output Type Open Drain
Sensing Accuracy Range -
Sensing Temperature Min -55°C
Sensing Temperature Max 125°C
Sensor Case Style µMAX
No. of Pins 10Pins
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-10 | element14
Temperature Sensor, Umax-10 | Newark Electronics

Frequently Asked Questions

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Is the MAX6691MUB+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for MAX6691MUB+ have stock available?

Authorised distributors including element14, Farnell, CoreStaff and Newark Electronics have stock available or on a lead time for MAX6691MUB+ .

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