Specifications
101Environmental Automation: Featured Products
Add Programmable Thermostat Function to
Any Equipment with Single IC
DS7505
The DS7505 is a single IC thermostat that oers high-precision, nonvolatile
thresholds over a wide range of temperatures and user-programmable
number-of-events ltering before tripping to avoid false alarms.
Benefits
• Very high-precision silicon solution
spans wide temperature range
◦ Operation over -55°C to +125°C
◦ ±0.5°C accuracy from 0°C to +70°C
◦ 9-bit to 12-bit digital temperature
readings resolution
• Digital out simplifies design while
maintaining sensor precision
◦ 2-wire serial interface saves
processor pins
◦ Software compatible with industry-
standard LM75 in 9-bit mode
◦ Three address pins allow up to eight
DS7505s on same bus
◦ User-defined number of consecutive
error conditions before flag is set
HEATER/COOLER UNIT
HEAT
AIR
COOL
AC POWER
COMMUNICATION TO BAS
COMMUNICATION
ELEVATOR CAR
FAN
DS7505
THERMOSTAT
DS7505 thermostat used in elevator heater/cooler system. Communication to the BAS is only needed when changing the nominal temperature setting or
when faults are detected. Normal operation is performed at the elevator car.