Rainbow Electronics MAX6632 - Manual

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 compati-
ble, allowing the MAX6629–MAX6632 to be readily con-
nected 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-digi-
tal conversion once every 8s and require minimal aver-
age 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 sec-
ond 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
±2.3°C (max) from -20°C to +100°C
±3.2°C (max) from -40°C to +125°C
±6.5°C (max) at +150°C
♦ +150°C Extended Temperature Range
♦ SPI-Compatible Serial Interface
♦ +3.0V to +5.5V Supply Range
♦ 6-Pin SOT23 Package
MAX6629–MAX6632
12-Bit + Sign Digital Temperature Sensors
with Serial Interface
________________________________________________________________ Maxim Integrated Products 1
GND
SCK V CC
1 6 SO
5
N.C.
MAX6629
MAX6631
SOT23
TOP VIEW
2
3 4
CS N.C.
SCK V
CC
1 6 SO
5
GND
MAX6630
MAX6632
SOT23
2
3 4
CS
Pin Configurations
19-2047; Rev 1; 7/01
Ordering Information
PART TEMP. RANGE
PIN-
PACKAGE TOP
MARK
MAX6 629MUT- T -55°C to +150°C 6 SOT23-6 AAPM
MAX6 630MUT- T -55°C to +150°C 6 SOT23-6 AAPN
MAX6 631MUT- T -55°C to +150°C 6 SOT23-6 AAPO
MAX6 632MUT- T -55°C to +150°C 6 SOT23-6 AAPP
SPI is a trademark of Motorola, Inc.
V CC
SO
GND
SCK
µC
+3V TO +5.5V
0.1 µF
MAX6629
MAX6630
MAX6631
MAX6632
CS
Typical Application Circuit
Cellular
Hard Disk Drive
HVAC
Automotive
Industrial Control
Systems
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.