Datasheet MAX31856 (Analog Devices) - 2

MAX31856 Precision Thermocouple to Digital Converter with Linearization
Absolute Maximum Ratings
AVDD, DVDD..-0.3V to +4.0V Operating Temperature Range ... -55°C to +125°C T+, T-, Bias ..±45V Junction Temperature ..+150°C T+, T-, Bias ...±20mA Storage Temperature Range ... -65°C to +150°C All Other Pins ...-0.3V to (VDVDD + 0.3V) Lead Temperature (soldering, 10s) ...+300°C Continuous Power Dissipation (TA = +70°C) Soldering Temperature TSSOP (derate 9.1mW/°C above +70°C) ..727.3mW (reflow) ..See IPC/JEDEC J-STD-020A Specification ESD Protection (All pins, Human Body Model) ...2000V Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Package Thermal Characteristics (Note 1)
TSSOP Junction-to-Ambient Thermal Resistance (θJA) ..110°C/W Junction-to-Case Thermal Resistance (θJC) ...30°C/W
Note 1:
Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to
www.maximintegrated.com/thermal-tutorial
.
Recommended DC Operating Conditions
(TA = -55°C to +125°C, unless otherwise noted.)(Notes 2 and 4)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Power-Supply Voltage VAVDD, V 3.0 3.3 3.6 V DVDD AVDD-DVDD -100 +100 mV Cable Resistance RCABLE Per lead 40 kΩ Input Logic 0 VIL 0.8 V Input Logic 1 VIH 2.1 V
Electrical Characteristics
(3.0V ≤ VDD ≤ 3.6V, TA = -55°C to +125°C, unless otherwise noted.)(Notes 2, 3, and 4)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Standby 5.25 10 µA Supply Current IDD Active conversion 1.2 2 mA Thermocouple Temperature 19 Bits Resolution 0.0078125 °C Cold-Junction Temperature Data Resolution 0.015625 °C TA = +25°C -10 +10 T Thermocouple Input Bias Current I A = -40°C to +85°C -10 +65 TCBIAS nA TA = -55°C to +105°C -20 +110 TA = -55°C to +125°C -20 +400 www.maximintegrated.com Maxim Integrated │ 2