The MX7705 low-power, 2-channel, serial-output analog-to-digital converter (ADC) includes a sigma-delta modulator with a digital filter to achieve 16-bit resolution with no missing codes. This ADC is pin compatible and software compatible with the AD7705. The MX7705 features an on-chip input buffer and programmable-gain amplifier (PGA). The device offers an SPI-/QSPI™-/MICROWIRE ®-compatible serial interface. The MX7705 operates from a single 2.7V to 5.25V supply. The operating supply current is 320µA (typ) with a 3V supply. Power-down mode reduces the supply current to 2µA (typ). Self-calibration and system calibration allow the MX7705 to correct for gain and offset errors. Excellent DC performance (±0.003% FSR INL) and low noise (650nV) make the MX7705 ideal for measuring low-frequency signals with a wide dynamic range. The device accepts fully differential bipolar/unipolar inputs. An internal input buffer allows for input signals with high source impedances. An on-chip digital filter, with a programmable cutoff and output data rate, processes the output of the sigma-delta modulator. The first notch frequency of the digital filter is chosen to provide 150dB rejection of common-mode 50Hz or 60Hz noise and 98dB rejection of normal-mode 50Hz or 60Hz noise. A PGA and digital filtering allow signals to be directly acquired with little or no signal-conditioning requirements. The MX7705 is available in a 16-pin TSSOP package. Applications * Flow and Gas Meters * Industrial Instruments * Loop-Powered Systems * Medical Instrumentation * Pressure Transducers * RTD Measurements * Strain-Gauge Measurements * Thermocouple Measurements * Weigh Scales * Pin Compatible and Software Compatible with the AD7705 * 16-Bit Sigma-Delta ADC * Two Fully Differential Input Channels * 0.003% Integral Nonlinearity with No Missing Codes * Interface with Schmitt Triggers on Inputs * Internal Analog Input Buffers * PGA from 1 to 128 * Single (2.7V to 3.6V) or (4.75V to 5.25V) Supply * Low Power * 1mW (max), 3V Supply * 2µA (typ) Power-Down Current * SPI-/QSPI-/MICROWIRE-Compatible 3-Wire Serial Interface https://elecena.pl/product/22333931/16-bit-low-power-2-channel-sigma-delta-adc 2022-12-28 https://elecena.pl/product/22333931/16-bit-low-power-2-channel-sigma-delta-adc 2025-01-22