Datasheet
General Description
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.
Applications
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)
19-2047; Rev 5; 10/14
● Cellular
● Hard Disk Drive
● HVACs
● Industrial Control
● Systems
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
PART TEMP RANGE PIN-PACKAGE
MAX6629MTT+ -55°C to +125°C 6 TDFN-EP*
MAX6629MUT -55°C to +125°C 6 SOT23-6
MAX6630MTT+ -55°C to +125°C 6 TDFN-EP*
MAX6630MUT -55°C to +125°C 6 SOT23-6
MAX6631MTT+ -55°C to +125°C 6 TDFN-EP*
MAX6631MUT -55°C to +125°C 6 SOT23-6
MAX6632MTT+ -55°C to +125°C 6 TDFN-EP*
MAX6632MUT -55°C to +125°C 6 SOT23-6
GND
SCKV
CC
1 6 SO
5
N.C.
MAX6629
MAX6631
SOT23
TDFN
TOP VIEW
2
3 4
CS
N.C.
SCKV
CC
1 6 SO
5
GND
MAX6630
MAX6632
SOT23
TDFN
2
3 4
CS
V
CC
SO
GND
SCK
µC
+3V TO +5.5V
0.1µF
MAX6629
MAX6630
MAX6631
MAX6632
CS
MAX6629–MAX6632 12-Bit + Sign Digital Temperature Sensors
with Serial Interface
Ordering Information
Typical Application Circuit
Pin Congurations