DC1410A-B

DC1410A-B demonstration circuit is a load cell digitizer application that shows a compact, high resolution solution for measuring Wheatstone bridge type sensors for load, pressure, temperature, acceleration, and many other physical quantities. Assembly type B features the LTC2449, an 8-/16-channel, high speed, 24-bit sigma delta ADC with ten selectable speed/resolution modes from 6.9Hz/200nVRMS to 3.5kHz/23μVRMS (4kHz with external oscillator). It also includes a low noise programmable gain amplifier (PGA) and calibration sources to facilitate transparent calibration of gain and offset, resulting in an effective resolution of better than 20nVRMS at 6.8Hz and 6.9Hz respectively.

• 5ppm INL, 5μV offset, 10ppm full-scale error and 20nV/°C offset drift
• 6.9Hz/200nVRMS mode, input normal mode rejection of 50Hz and 60Hz noise is better than 80dB