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 7
MCP9600
2.0 TYPICAL PERFORMANCE CURVES
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 2-1: 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.
Note: The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein
are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
-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 K
-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 J
-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 N
0.000
0.250
0.500
-200 300 800 1300 1800
Sensitivity (Δ°C/LSb)
T
ǻ
Temperature, ITS-90 Database (°C)
Type K
0.000
0.250
0.500
-200 300 800 1300 1800
Sensitivity (Δ°C/LSb)
T
ǻ
Temperature, ITS-90 Database (°C)
Type J
0.000
0.250
0.500
-200 300 800 1300 1800
Sensitivity (Δ°C/LSb)
T
ǻ
Temperature, ITS-90 Database (°C)
Type N