LTC2485IDD#PBF

The LTC2485IDD#PBF is a 24-bit plus sign Analog-to-Digital Converter (ADC) from Linear Technology (LT) that incorporates Easy Drive technology and an I2C digital interface. This ADC is designed to directly digitize high impedance sensors with full accuracy, thanks to its patented sampling scheme that eliminates dynamic input current errors. It supports a wide input and reference common mode range from GND to VCC.

Key electrical specifications include a 24-bit resolution, an integral non-linearity (INL) of 2ppm, an offset error of 1ppm, and a full-scale error of 15ppm. The device operates on a single supply voltage between 2.7V and 5.5V. It features programmable line frequency rejection for 50Hz, 60Hz, or simultaneous 50Hz/60Hz, and a selectable 2x speed-up mode. An internal oscillator eliminates the need for external crystals or oscillators.

The LTC2485 is available in a compact 3mm x 3mm, 10-lead DFN package, making it suitable for space-constrained applications. Its Easy Drive technology allows for rail-to-rail inputs with zero differential input current, simplifying system design and enabling direct digitization of signals from various sensors.

Applications for the LTC2485IDD#PBF include direct sensor digitization, weight scales, direct temperature measurement, strain gauge transducers, instrumentation, industrial process control, and digital voltmeters (DVMs).