Functional Diagram
Functional Diagram
Ground
GND
GND
PARASITE POWER
PARASITE POWER
64-BIT ROM AND 1-WIRE PORT
64-BIT
ROM
AND
1
-WIRE
PORT
TEMPERATURE SENSOR
TEMPERATURE SENSOR
ALARM HIGH TRIGGER (TH) REGISTER
ALARM HIGH TRIGGER
(TH) REGISTER
ALARM LOW TRIGGER (TL) REGISTER
ALARM LOW TRIGGER
(TL) REGISTER
CONFIGURATION REGISTER
CONFIGURATION REGISTER
8-BIT CRC REGISTER
8-BIT CRC REGISTER
SCRATCHPAD
SCRATCHPAD
MEMORY CONTROL LOGIC
MEMORY
CONTROL LOGIC
MAX31825
MAX31825
Data In/Out
DQ
DQ
10nF
10nF
External Parasite Power Capacitor and VDD Input. Connect a 3.3nF capacitor between this pin and GND for parasite power operation. Connect power supply voltage to this pin when powering from an external VDD source.
VDD
V
DD
CIRCUIT
CIRCUIT
