Datasheet MAX31856 (Analog Devices) - 3
| Manufacturer | Analog Devices |
| Description | Precision Thermocouple to Digital Converter with Linearization |
| Pages / Page | 30 / 3 — Electrical Characteristics (continued). PARAMETER. SYMBOL. CONDITIONS. … |
| File Format / Size | PDF / 676 Kb |
| Document Language | English |
Electrical Characteristics (continued). PARAMETER. SYMBOL. CONDITIONS. MIN. TYP. MAX. UNITS
Model Line for this Datasheet
Text Version of Document
MAX31856 Precision Thermocouple to Digital Converter with Linearization
Electrical Characteristics (continued)
(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
TA = +25°C ±0.2 Thermocouple Input Differential TA = -40°C to +85°C -4 +4 Bias Current (Note 4) ITCIDBIAS nA TA = -55°C to +105°C -5.5 +5.5 TA = -55°C to +125°C -10 +10 AV = 8 1.3 Input-Referred Noise VN µVRMS AV = 32 0.4 Power-Supply Rejection PSR Cold-junction sensor 0.15 °C/V Power-On-Reset Voltage Threshold VPOR 2.7 2.85 V Power-On-Reset Voltage Hysteresis VHYST 0.1 V Bias Voltage VBIAS 0.735 V BIAS Output Resistance RBIAS 2 kΩ Input Common-Mode Range 0.5 1.4 V TA = +25°C -0.05 +0.05 TA = -20°C to +85°C -0.15 +0.15 Full-Scale and INL Error (Note 6) TA = -40°C to +105°C -0.2 +0.2 %FS TA = -40°C to +125°C -0.3 +0.3 TA = -55°C to +125°C -0.35 +0.35 TA = +25°C -0.01 +0.01 T = -20°C to +85°C -0.015 +0.015 Input Offset Voltage (Note 7) A %FS TA = -40°C to +105°C -0.017 +0.017 TA = -55°C to +125°C -0.02 +0.02 TA = +25°C -7.8 +7.8 T = -20°C to +85°C -11.7 +11.7 AV = 8 A TA = -40°C to +105°C -13.3 +13.3 T = -55°C to +125°C -15.6 +15.6 Input Offset Voltage A µV TA = +25°C -2.0 +2.0 T = -20°C to +85°C -2.9 +2.9 AV = 32 A TA = -40°C to +105°C -3.3 +3.3 TA = -55°C to +125°C -3.9 +3.9 TA = -20°C to +85°C -0.7 +0.7 Cold-Junction Temperature Error TA = -40°C to +105°C -1 +1 °C TA = -55°C to +125°C -2 +2 Overvoltage Rising Threshold VAVDD – VAVDD + VAVDD (Note 8) 0.1 0.17 + 0.35 V Overvoltage Hysteresis 0.09 V www.maximintegrated.com Maxim Integrated │ 3
Electrical Characteristics (continued)
(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
TA = +25°C ±0.2 Thermocouple Input Differential TA = -40°C to +85°C -4 +4 Bias Current (Note 4) ITCIDBIAS nA TA = -55°C to +105°C -5.5 +5.5 TA = -55°C to +125°C -10 +10 AV = 8 1.3 Input-Referred Noise VN µVRMS AV = 32 0.4 Power-Supply Rejection PSR Cold-junction sensor 0.15 °C/V Power-On-Reset Voltage Threshold VPOR 2.7 2.85 V Power-On-Reset Voltage Hysteresis VHYST 0.1 V Bias Voltage VBIAS 0.735 V BIAS Output Resistance RBIAS 2 kΩ Input Common-Mode Range 0.5 1.4 V TA = +25°C -0.05 +0.05 TA = -20°C to +85°C -0.15 +0.15 Full-Scale and INL Error (Note 6) TA = -40°C to +105°C -0.2 +0.2 %FS TA = -40°C to +125°C -0.3 +0.3 TA = -55°C to +125°C -0.35 +0.35 TA = +25°C -0.01 +0.01 T = -20°C to +85°C -0.015 +0.015 Input Offset Voltage (Note 7) A %FS TA = -40°C to +105°C -0.017 +0.017 TA = -55°C to +125°C -0.02 +0.02 TA = +25°C -7.8 +7.8 T = -20°C to +85°C -11.7 +11.7 AV = 8 A TA = -40°C to +105°C -13.3 +13.3 T = -55°C to +125°C -15.6 +15.6 Input Offset Voltage A µV TA = +25°C -2.0 +2.0 T = -20°C to +85°C -2.9 +2.9 AV = 32 A TA = -40°C to +105°C -3.3 +3.3 TA = -55°C to +125°C -3.9 +3.9 TA = -20°C to +85°C -0.7 +0.7 Cold-Junction Temperature Error TA = -40°C to +105°C -1 +1 °C TA = -55°C to +125°C -2 +2 Overvoltage Rising Threshold VAVDD – VAVDD + VAVDD (Note 8) 0.1 0.17 + 0.35 V Overvoltage Hysteresis 0.09 V www.maximintegrated.com Maxim Integrated │ 3
