DS1775R

The DS1775 digital thermometer and thermostat is offered in a tiny 5-pin SOT-23 package and provides ±2°C accuracy over a -10°C to +85°C range. Thermometer data is read out over a 2-wire serial bus in 2's complement format with 9 to 12 bits of resolution (user-programmable). The DS1775 is available with eight different hard-wired addresses, allowing up to eight DS1775 devices to operate on the same bus. The eight versions of the DS1775 are:

Part Number	Address
DS1775R	000
DS1775R1	001
DS1775R2	010
DS1775R3	011
DS1775R4	100
DS1775R5	101
DS1775R6	110
DS1775R7	111

The DS1775 offers thermostatic functionality with over-temperature (T_OS) and under-temperature (T_HYST) user-programmable trip-points stored in on-chip SRAM. The two trip-points provide programmable thermostat hysteresis: the thermostat output is asserted when the measured temperature exceeds T_OS and it remains active until the temperature falls below T_HYST.

The DS1775 is functionally compatible with the DS75 and the LM75.

Applications

• Computer Graphics Systems
• Industrial Instruments
• Notebook Computers
• Portable Terminals
• Storage Area Networks (SANs)