DS1631S+

Series:	--
Packaging:	Tube
Part Status:	Active
Sensor Type:	Digital, Local
Sensing Temperature - Local:	-55°C ~ 125°C
Sensing Temperature - Remote:	--
Output Type:	I²C
Voltage - Supply:	2.7 V ~ 5.5 V
Resolution:	11 b
Features:	One-Shot, Output Switch, Programmable Limit, Programmable Resolution, Standby Mode
Accuracy - Highest (Lowest):	±0.5°C (±2°C)
Test Condition:	0°C ~ 70°C (-55°C ~ 125°C)
Operating Temperature:	-55°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	8-SOIC (0.209", 5.30mm Width)
Supplier Device Package:	8-SOIC

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Temperature Sensors - Analog and Digital OutputThe DS1631S+ is a temperature sensor with analog and digital outputs. It is designed for industrial, commercial, automotive, and military applications. The DS1631S+ is housed in a hermetically sealed TO-220 package and offers excellent thermal performance with a specified operating range from -55°C to +150°C. The senor provides a 10-bit digital output, with one bit per degree Celsius over the specified -55°C to +150°C temperature range.The DS1631S+ consists of a N-type thermal diode, a 10-bit successive-approximation-register (SAR) analog-to-digital (A/D) converter, a 64 byte EEPROM memory, and a 2-wire serial communications interface. The combination of these components allows for the temperature measurement and digital output of the data over the I2C bus.The DS1631S+ temperature sensing diode can sense temperatures from -55°C to +150°C. The accuracy of the diode is ±2.0°C over the full temperature range. The sensing diode is connected to an on-board SAR A/D converter that converts the analog signal from the thermal diode into a 10-bit digital output. The A/D converter is controlled by an auto-zero capacitor on board. This capacitor is used to reduce the effect of stray offset voltages generated on the chip. The auto-zero capacitor also ensures that the offset is corrected at temperature changes.The DS1631S+ utilizes a 64-byte EEPROM memory to store configurable settings. These configurable settings include a user-programmable alert level, hysteresis value, and alarm mask. The alarm mask can be used to enable or disable alarm conditions corresponding to temperature values. The default alarm levels are set to -55°C and +150°C, so that the warning temperature is equal to the minimum and maximum temperatures.The DS1631S+ uses I2CA compatible 2-wire serial communications interface to send and receive data. Using the I2C bus, data can be transferred to and from the sensor at 400 kHz data rate. The I2C bus interface can be used to access the EEPROM memory and the two conversion registers.In conclusion, the DS1631S+ temperature sensor is designed for a wide range of applications and offers excellent thermal performance over the temperature range of -55°C to +150°C with a high degree of accuracy and resolution. It utilizes a N-type thermal diode, a 10-bit SAR A/D converter, a 64 byte EEPROM memory, and a 2-wire serial communications interface to provide digital output over the I2C bus. The configurable alarm level, hysteresis value, and alarm mask can be set as desired, allowing for flexible temperature monitoring.

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