Analog Devices DS1621 Product Info

• 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 1s
  • 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)
• Saves Space
  • Temperature Measurements Require No External Components
  • 8-pin DIP or SO package (208-mil) Packages

The DS1621 Digital Thermometer and Thermostat provides 9-bit temperature readings, which indicate the temperature of the device. The thermal alarm output, T_OUT is active when the temperature of the device exceeds a user-defined temperature T_H. The output remains active until the temperature drops below user defined temperature T_L, 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.

Applications

• Medical
• Networking
• Personal Computing
• Routers/Switches
• Test Measurement Systems
• Wireless Base Stations