MAX6632:12-Bit + Sign Digital Temperature Sensors with Serial Interface

The MAX6629–MAX6632 are local digital temperature sensors with an SPI-compatible serial interface. The temperature is converted to a 12-bit + sign word with a resolution of 0.0625°C/LSB. An extended temperature range provides useful readings up to +150°C. These sensors are 3-wire serial interface SPI compatible, allowing the MAX6629–MAX6632 to be readily connected to a variety of microcontrollers (µCs). The MAX6629–MAX6632 are read-only devices, simplifying their use in systems where only temperature data is required. All four digital temperature sensors require very little supply current, making them ideal for portable systems. The MAX6631/MAX6632 perform a temperature-to-digital conversion once every 8s and require minimal average supply current, 32µA (typ). The MAX6629/MAX6630 perform a conversion once every 0.5s and require only 200µA (typ) supply current. Any of these temperature sensors can perform conversions more often—up to approximately four conversions per second by reading the conversion results more often.

Key Features
  • Low Power Consumption
    • 32µA typ (MAX6631/MAX6632)
    • 200µA typ (MAX6629/MAX6630)
  • 12-Bit + Sign Resolution with 0.0625°C/LSB
  • Accuracy
    • ±1°C (max) from 0°C to +70°C
  • +150°C Extended Temperature Range
  • SPI-Compatible Serial Interface
  • +3.0V to +5.5V Supply Range
  • 6-Pin TDFN and SOT23 Packages
  • Lead-Free Version Available (TDFN Package)
MAX6629, MAX6630, MAX6631, MAX6632: Typical Application Circuit
MAX6629, MAX6630, MAX6631, MAX6632: Typical Application Circuit
Applications/Uses
  • Cellular
  • Hard Disk Drive
  • HVACs
  • Industrial Control
  • Systems
DataSheet
titleDownload file
MAX6629-MAX6632 Data SheetMAX6629-MAX6632.pdf
Parametrics
Part NumberSensor TypeInterfaceChannelsAccuracy
(±°C)
Parasite Pwr.Temp. Resolution
(bits)
Oper. Temp.
(°C)
Package/PinsBudgetary
Price
See Notes
MAX6629Local3-Wire/SPIOne3.2No12-55 to +125
-55 to +150
SOT/6
TDFN-EP/6
$1.39 @1k
MAX6630SOT/6
TDFN-EP/6
$1.39 @1k
MAX6631SOT/6
TDFN-EP/6
$1.87 @1k
MAX6632SOT/6
TDFN-EP/6
$1.87 @1k
Design kits & evaluation modules
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX6632MTT+ActiveTDFN-EP,;6 pin;9.6 mm²-40°C to +85°CLead Free
MAX6632MTT+TActiveTDFN-EP,;6 pin;9.6 mm²-40°C to +85°CLead Free
MAX6632MTT-TNo Longer AvailableMAX6632MTT+TTDFN;6 pin-40°C to +85°CSee data sheet
MAX6632MUTNo Longer AvailableSOT,;6 pin;9 mm²-55°C to +125°CNo
MAX6632MUT-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6629-MAX6632.pdf MAX6632
Temperature Sensor Has One Digital Input and One Digital Output MAX6632
MAX6629-MAX6632.pdf MAX6632