Datasheet
Table Of Contents
- Thermocouple EMF to Temperature Converter, ±1.5 °C Maximum Accuracy
- 1.0 Electrical Characteristics
- 2.0 Typical Performance Curves
- FIGURE 2-1: Typical Temperature Accuracy from NIST ITS-90 Database, Type K.
- FIGURE 2-2: Typical Temperature Accuracy from NIST ITS-90 Database, Type J.
- FIGURE 2-3: Typical Temperature Accuracy from NIST ITS-90 Database, Type N.
- FIGURE 2-4: Temperature Sensitivity with 18-Bit Resolution, Type K.
- FIGURE 2-5: Temperature Sensitivity with 18-Bit Resolution, Type J.
- FIGURE 2-6: Temperature Sensitivity with 18-Bit Resolution, Type N.
- FIGURE 2-7: Typical Temperature Accuracy from NIST ITS-90 Database, Type S.
- FIGURE 2-8: Typical Temperature Accuracy from NIST ITS-90 Database, Type R.
- FIGURE 2-9: Typical Temperature Accuracy from NIST ITS-90 Database, Type E.
- FIGURE 2-10: Temperature Sensitivity with 18-Bit Resolution, Type S.
- FIGURE 2-11: Temperature Sensitivity with 18-Bit Resolution, Type R.
- FIGURE 2-12: Temperature Sensitivity with 18-Bit Resolution, Type E.
- FIGURE 2-13: Typical Temperature Accuracy from NIST ITS-90 Database, Type T.
- FIGURE 2-14: Typical Temperature Accuracy from NIST ITS-90 Database, Type B.
- FIGURE 2-15: Input Offset Error Voltage (VIN+, VIN-).
- FIGURE 2-16: Temperature Sensitivity with 18-Bit Resolution, Type T.
- FIGURE 2-17: Temperature Sensitivity with 18-Bit Resolution, Type B.
- FIGURE 2-18: Full-Scale Gain Error.
- FIGURE 2-19: Input Noise, % of Full-Scale.
- FIGURE 2-20: Cold-Junction Sensor Temperature Accuracy.
- FIGURE 2-21: SDA and Alert Outputs, VOL across VDD.
- FIGURE 2-22: Integral Nonlinearity across VDD.
- FIGURE 2-23: Cold-Junction Sensor Temperature Accuracy Distribution.
- FIGURE 2-24: Alert Outputs, VOH across VDD.
- FIGURE 2-25: I2C Inactive IDD across VDD.
- FIGURE 2-26: I2C Active IDD across VDD.
- FIGURE 2-27: Shutdown Current, ISHDN across VDD.
- FIGURE 2-28: SDA, SCL and ADDR Input Pins Leakage Current, ILEAK across VDD.
- FIGURE 2-29: I2C Interface Clock Stretch Duration, tSTRETCH across VDD.
- FIGURE 2-30: Temperature Calculation Duration, tCALC change across VDD.
- 3.0 Pin Description
- 4.0 Serial Communication
- 4.1 2-Wire Standard Mode I2C Protocol-Compatible Interface
- TABLE 4-1: MCP9600 Serial Bus protocol descriptions
- FIGURE 4-1: Device Addressing.
- FIGURE 4-2: Clock Stretching.
- FIGURE 4-3: Timing Diagram to Set a Register Pointer and Read a Two Byte Data.
- FIGURE 4-4: Timing Diagram to Set a Register Pointer and Read a Two Byte Data.
- FIGURE 4-5: Timing Diagram to Set a Register Pointer and Read a Two Byte Data.
- FIGURE 4-6: Timing Diagram to Sequential Read all Registers Starting from TH Register.
- 5.0 Functional Description
- FIGURE 5-1: Functional Block Diagram.
- Register 5-1: REGISTER POINTER
- TABLE 5-1: Summary of Registers and Bit Assignments
- 5.1 Thermocouple Temperature Sensor Registers
- EQUATION 5-1: Temperature Conversion
- FIGURE 5-2: Thermocouple Register’s Block Diagram.
- Register 5-2: Thermocouple Temperature Register (Read only)
- EQUATION 5-2: Temperature Conversion
- FIGURE 5-3: Thermocouple Hot-Junction Register – TΔ Block Diagram.
- Register 5-3: HOT-Junction Temperature register (READ only)
- EQUATION 5-3: Temperature Conversion
- TABLE 5-2: Resolution vs. Conversion Time
- FIGURE 5-4: Thermocouple Cold-Junction Register – TC Block Diagram.
- Register 5-4: COLD-JUNCTION TEMPERATURE REGISTER
- TABLE 5-3: ADC Resolution
- FIGURE 5-5: Delta Sigma Analog to Digital Converter, ADC Core – Block Diagram.
- Register 5-5: SAMPLE: 24-bit Register
- 5.2 Sensor Status and Configuration Registers
- 5.3 Temperature Alert Registers
- TABLE 5-4: Alert Limit Registers
- Register 5-9: Alert Limits 1, 2, 3 and 4 registers
- FIGURE 5-8: Alert Limits Set to Detect TH and TC.
- FIGURE 5-9: Alert Limits Boundary Conditions and Output Characteristics when Set to Detect TH.
- TABLE 5-5: Alert Hysteresis Registers
- Register 5-10: Alert 1, 2, 3 and 4 Hysteresis Register
- FIGURE 5-10: Graphical Description of Alert Output Hysteresis Direction.
- TABLE 5-6: Alert CONFIG. Registers
- Register 5-11: Alert 1, 2, 3 and 4 Configuration Register
- Register 5-12: Device ID and revision ID register
- 6.0 Application Information
- 6.1 Layout Considerations
- 6.2 Thermal Considerations
- 6.3 Device Features
- TABLE 6-2: Recommended Resistor Values for I2C Addressing
- FIGURE 6-4: I2C Address Selection Implementation.
- FIGURE 6-5: Thermocouple Input Stage.
- FIGURE 6-6: Adding Open-Circuit Detection Resistors.
- FIGURE 6-7: Adding a Low-Pass Filter.
- FIGURE 6-8: Adding Open-Circuit Detection Resistors with an Input Low-Pass Filter.
- FIGURE 6-9: Adding Ferrite Beads.
- 7.0 Packaging Information
- Appendix A: Revision History
- Product Identification System
- Trademarks
- Worldwide Sales and Service
2015-2016 Microchip Technology Inc. DS20005426B-page 9
MCP9600
Note: Unless otherwise indicated, V
DD
= 2.7V to 5.5V, GND = Ground, SDA/SCL pulled-up to V
DD
and
T
A
= -40°C to +125°C.
FIGURE 2-13: Typical Temperature
Accuracy from NIST ITS-90 Database, Type T.
FIGURE 2-14: Typical Temperature
Accuracy from NIST ITS-90 Database, Type B.
FIGURE 2-15: Input Offset Error Voltage
(V
IN+
, V
IN-
).
FIGURE 2-16: Temperature Sensitivity with
18-Bit Resolution, Type T.
FIGURE 2-17: Temperature Sensitivity with
18-Bit Resolution, Type B.
FIGURE 2-18: Full-Scale Gain Error.
-0.50
-0.25
0.00
0.25
0.50
-200 300 800 1300 1800
T
ǻ_ACY
(°C)
T
ǻ
Temperature, ITS-90 Database (°C)
Type T
-0.50
-0.25
0.00
0.25
0.50
-200 300 800 1300 1800
T
ǻ_ACY
(°C)
T
ǻ
Temperature, ITS-90 Database (°C)
Type B
Specified Range
-10
-5
0
5
10
-40 -20 0 20 40 60 80 100 120
Offset Error (µV)
Temperature (°C)
0.000
0.250
0.500
-200 300 800 1300 1800
Sensitivity (Δ°C/LSb)
T
ǻ
Temperature, ITS-90 Database (°C)
Type T
0.000
0.250
0.500
-200 300 800 1300 1800
Sensitivity (Δ°C/LSb)
T
ǻ
Temperature, ITS-90 Database (°C)
Type B
Specified Range
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
-40-20 0 20406080100120
Gain Error (% of FSR)
Temperature (°C)
V
DD
= 3.3V