Datasheet Maxim MAX6675 — Datenblatt

EVALUATION KIT AVAILABLE MAX6675 Cold-Junction-Compensated K-Thermocoupleto-Digital Converter (0°C to +1024°C) General Description The MAX6675 performs cold-junction compensation and
digitizes the signal from a type-K thermocouple. The
data is output in a 12-bit resolution, SPI™-compatible,
read-only format.
This converter resolves temperatures to 0.25°C, allows
readings as high as +1024°C, and exhibits thermocouple
accuracy of 8LSBs for temperatures ranging from 0°C to
+700°C.
The MAX6675 is available in a small, 8-pin SO package. Applications Features ●● Direct Digital Conversion of Type -K Thermocouple
Output
●● Cold-Junction Compensation
●● Simple SPI-Compatible Serial Interface
●● 12-Bit, 0.25°C Resolution
●● Open Thermocouple Detection Ordering Information
PART ●● Industrial
●● Appliances
●● HVAC MAX6675ISA TEMP RANGE PIN-PACKAGE -20°C to +85°C 8 SO Pin Configuration
TOP VIEW GND 1 8 N.C. T-2 7 SO 3 6 CS VCC 4 T+ 5 SCK SPI is a trademark of Motorola, Inc. SO Typical Application Circuit
Vcc
0.1µF MAX6675
MICROCONTROLLER
68HC11A8 GND 19-2235; Rev 2; 4/14 MAX6675 SO MISO T+ SCK SCK T-CS SSB MAX6675 Cold-Junction-Compensated K-Thermocoupleto-Digital Converter (0°C to +1024°C) Absolute Maximum Ratings Supply Voltage (VCC to GND) . -0.3V to +6V
SO, SCK, CS, T-, T+ to GND .-0.3V to VCC + 0.3V …