DS1621 Digital Thermometer IC

The DS1621 Digital Thermometer and Thermostat provides 9-bit temperature readings, which indicate the temperature of the device. The thermal alarm output, TOUT, is active when the temperature of the device exceeds a user-defined temperature TH. The output remains active until the temperature drops below user defined temperature TL, allowing for any hysteresis necessary.
User-defined temperature settings are stored in nonvolatile memory so parts may be programmed prior to insertion in a system. Temperature settings and temperature readings are all communicated to/from the DS1621 over a simple 2-wire serial interface.

Features:

• Simply Adds Temperature Monitoring and Control to Any System
• Measures Temperatures From -55°C to +125°C in 0.5°C Increments. Fahrenheit Equivalent is -67°F to 257°F in 0.9°F Increments.
• Temperature is Read as a 9-Bit Value (2-Byte Transfer)
• Converts Temperature to Digital Word in Less than 1 second
• Thermostatic Settings are User Definable And Nonvolatile
• Can Be Used in a Wide Variety of Applications
• Power Supply Range (2.7V to 5.5V)
• Data is Read From/Written Via a 2-Wire Serial Interface (Open Drain I/O Lines)

Specifications:
Sensor Type: Local
Channels: One
Interface: 2-Wire/I2C/SMBus
Functions: Single Temperature Sensor
Accuracy (±°C): 0.5
Temp. Thresh.: Programmable (NV)
Operational Temp. (°C): -55 to +125

Package Includes:
1 x DS1621 Digital Thermometer IC