Document
MCP960X/L0X/RL0X
Thermocouple EMF to Temperature Converter, ±1.5°C Maximum Accuracy
Features
• Thermocouple Electromotive Force (EMF) to °C Converter: - Integrated cold-junction compensation - Integrated thermocouple open-circuit and short-circuit detection
• Supported Types (designated by NIST ITS-90): - Type K, J, T, N, S, E, B and R
• Sensor Accuracy for Thermocouple Hot-Junction: - MCP9600/01 ±0.5°C/±1.5°C (typ./max.) - MCP96L00/L01 ±2.0°C/±4.0°C (typ./max.) - MCP96RL00/RL01 ±4.0°C/±8.0°C (typ./max.)
• Measurement Resolution: - Hot and cold-junctions: +0.0625°C (typical)
• Four Programmable Temperature Alert Outputs: - Monitor hot or cold-junction temperatures - Detect rising or falling temperatures - Up to 255°C of programmable hysteresis
• Programmable Digital Filter for Temperature • Low Power:
- Shutdown mode - Burst mode: 1 to 128 temperature samples • 2-Wire Interface: I2C Compatible, 100 kHz: - Supports eight devices per I2C Bus • Operating Voltage Range: 2.7V to 5.5V • Operating Current: 300 µA (typical) • Shutdown Current: 2 µA (typical) • Package: 20-Lead MQFN
Typical Applications
• Petrochemical Thermal Management • Hand-Held Measurement Equipment • Industrial Equipment Thermal Management • Commercial and Industrial Ovens • Industrial Engine Thermal Monitor • Temperature Detection Racks
Description
The Microchip Technology Inc. MCP960X/L0X/RL0X converts thermocouple EMF to degree Celsius with integrated cold-junction compensation. The temperature correction coefficients are derived from the National Institute of Standards and Technology (NIST) ITS-90 Thermocouple Database. The MCP9600/01 corrects the thermocouple nonlinear error characteristics of eight thermocouple types and outputs ±0.5°C/±1.5°C (Typ./Max.).
The MCP960X/L0X/RL0X digital temperature sensor comes with user-programmable registers which provide design flexibility for various temperature sensing applications. The registers allow user-selectable settings, such as Low-Power modes for battery powered applications, adjustable digital filter for fast transient temperatures and four individually programmable temperature alert outputs which can be used to detect multiple temperature zones.
In addition, the MCP9601/L01/RL01 family provides integrated Thermocouple open-circuit and short-circuit detection features. An alert signal is asserted when the thermocouple wire is broken or disconnected. Similarly, alert signal is asserted when the Thermocouple is shorted to ground or power.
The temperature alert limits have multiple user-programmable configurations, such as alert polarity as either an active-low or active-high push-pull output, and output function as a Comparator mode (useful for thermostat-type operation) or Interrupt mode for microprocessor-based systems. In addition, the alerts can detect either a rising or a falling temperature with up to +255°C hysteresis.
This sensor uses an industry standard 2-wire, I2C compatible serial interface and supports up to eight devices per bus by setting the device address using the ADDR pin.
PIC® MCU I2C
VDD
VIN+ TC+
MCP9600/L00/RL00
4
Alert ADDR
VINGND
TC-
Types K, J, T, N, E, B, S, R
2015-2019 Microchip Technology Inc.
DS20005426F-page 1
Package Types
SDA SCL GND GND ADDR
MCP9600/L00/RL00
5 mm × 5 mm MQFN*
20 19 18 17 16
GND 1
15 Alert 4
VIN+ 2 GND 3 VIN- 4 GND 5
14 Alert 3 EP 21 13 GND
12 Alert 2
11 Alert 1
6 7 8 9 10
MCP960X/L0X/RL0X
SDA SCL GND GND ADDR
MCP9601/L01/RL01
5 mm × 5 mm MQFN*
20 19 18 17 16
GND 1
15 Alert 4
VIN+ 2 GND 3 VIN- 4 GND 5
14 Alert 3 EP 21 13 GND
12 Alert 2
11 Alert 1
6 7 8 9 10
VSENSE SC Alert
VDD OC Alert
GND
GND GND VDD GND GND
* Includes Exposed Thermal Pad (EP); see Table 3-1.
MCP960X/L0X/RL0X Block Diagram
+ VIN+ VIN-
ADC Core Del Sig
Error Correction
Digital Filter
Thermocouple Type Selection
VSENSE
Open Circuit Alert Short Circuit Alert
Open Circuit & Short Circuit Detection
MCP9601/L01/RL01 Only
User Registers
Thermocouple Hot-Junction TH Junctions Delta Temperature T Thermocouple Cold-Junction TC Sensor Status
∑
Sensor Configuration
Device Resolution + Power Modes
Alert Config. Registers Alert Registers
Hysteresis Registers Device ID
I2C Module
Alert 1 Output Alert 2 Output Alert 3 Output Alert 4 Output
SCL SDA ADDR
2015-2019 Microchip Technology Inc.
DS20005426F-page 2
MCP960X/L0X/RL0X
1.0 ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings †
VDD............................................................................................................................................................................ 6.0V Voltage at All Input/Output Pins ........................................................................................................ GND – 0.3V to 6.0V Storage Temperature ..............................................................................................................................-65°C to .