Specifications

109Environmental Automation: Recommended Solutions
Recommended Solutions
Thermal Management
Part Description Features Benefits
Temperature Sensors
DS7505 Thermostat with nonvolatile
thresholds
High precision ±0.5°C accuracy
from 0°C to +70°C, user-definable,
nonvolatile thermostat settings
Provides thermostat function
on stand-alone equipment with
thresholds saved, even when
powered down.
MAX6682 Thermistor-to-digital converter Converts thermistor temperature
to SPI data, 10-bit resolution
Eases design with direct
conversion to digital data.
MAX1402 Platinum RTD-to-digital converter Oversampling ADC with precision
current sources to excite RTD,
16-bit, 480sps
Reduces BOM for 4-wire RTD
solutions.
MAX31855 Thermocouple-to-digital converter Converts thermocouple signal
to digital SPI-compatible data,
temperatures from -270°C to
+1800°C
Cold-junction compensation
eases design of thermocouple
temperature sensor signal
conditioners.
Fan Controllers
MAX31785 6-channel intelligent fan controller Closed-loop speed control adjusts
fan speed to level only needed to
minimize noise and power
Simplifies µC overhead by
handling fan speed adjustments
for multiple fans automatically.
Position Sensors
Part Description Features Benefits
MAX44000 Proximity sensor On-board IR LED driver, wide
operating temperature range,
small 2mm x 2mm package
Provides simplified proximity
detection solution.
MAX9924–MAX9927 Variable-reluctance sensor
interfaces
Differential input, adaptive peak
threshold, precision comparator
allows small-signal detection
Ease design in noisy environments
with differential input that rejects
common-mode signals and
detects small signals.
MAX9621 Dual, Hall-effect sensor interface Interface for two Hall-effect
sensors provides redundancy for
fail-safe operation, protection to
60V
Provides simple to implement
fail-safe redundancy solution with
built-in sensor protections.
Humidity Sensors
Part Description Features Benefits
DS1923 Humidity and temperature sensor/
data logger
1-Wire humidity and temperature
data logger
Provides complete humidity and
temperature data logging solution.