LTC2984HLX#PBF

LTC2984 is a multi-sensor high accuracy digital temperature measurement system with EEPROM. It measures a wide variety of temperature sensors and digitally outputs the result, in °C or °F, with 0.1°C accuracy and 0.001°C resolution. It can measure the temperature of virtually all standard (type B, E, J, K, N, S, R, T) or custom thermocouples, automatically compensate for cold junction temperatures and linearize the results. The device can also measure temperature with standard 2-, 3-, or 4-wire RTDs, thermistors, and diodes. It has 20 reconfigurable analogue inputs enabling many sensor connections and configuration options. IT includes excitation current sources and fault detection circuitry appropriate for each type of temperature sensor as well as an EEPROM for storing custom coefficients and channel configuration data. It is used in application such as direct thermocouple measurements, direct RTD measurements, direct thermistor measurements, custom sensor applications etc.

• On-chip EEPROM stores channel configuration data and custom coefficients
• Single supply range is 2.85V to 5.25V
• 20 flexible inputs allow interchanging sensors
• Automatic thermocouple cold junction compensation
• Measures negative thermocouple voltages
• Automatic burn out, short-circuit and fault detection
• Buffered inputs allow external protection
• Supply current is 15mA typical, resolution is 24bits
• Integral nonlinearity is 2ppm of VREF typical, offset error is 2µV typical
• Operating temperature is -40°C to 125°C, package style is 48-lead LQFP

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party