The AD7798 / AD7799 are low power, low noise, complete analog front ends for high precision measurement applications. The AD7798 / AD7799 contains a low noise, 16-/24-bit Σ-Δ ADC with three differential analog inputs. The on-chip, low noise instrumentation amplifier means that signals of small amplitude can be interfaced directly to the ADC. With a gain setting of 64, the rms noise is 27 nV for the AD7799 and 40 nV for the AD7798 when the update rate equals 4.17 Hz. On-chip features include a low-side power switch, reference detect, programmable digital output pins, burnout currents, and an internal clock oscillator. The output data rate from the part is software-programmable and can be varied from 4.17 Hz to 470 Hz. The part operates with a power supply from 2.7 V to 5.25 V. The AD7798 consumes a current of 300 μA typical, whereas the AD7799 consumes 380 μA typical. Both devices are housed in a 16-lead TSSOP package. APPLICATIONS * Weigh scales * Pressure measurement * Strain gauge transducers * Gas analysis * Industrial process control * Instrumentation * Portable instrumentation * Blood analysis * Smart transmitters * Liquid/gas chromotography 6-digit DVM * RMSnoise: 27 nV at 4.17 Hz (AD7799) 65 nV at 16.7 Hz (AD7799) 40 nV at 4.17 Hz (AD7798) 85 nV at 16.7 Hz (AD7798) * Current: 380 μA typical * Power-down: 1 μA maximum * Low noise, programmable gain, instrumentation amp https://elecena.pl/product/691340/3-channel-low-noise-low-power-16-bit-sigma-delta-adc-with-on-chip-in-amp 2008-07-05 https://elecena.pl/product/691340/3-channel-low-noise-low-power-16-bit-sigma-delta-adc-with-on-chip-in-amp 2018-03-29 https://elecena.pl/product/691340/3-channel-low-noise-low-power-16-bit-sigma-delta-adc-with-on-chip-in-amp 2025-01-20