The NAU7802KG1 is a 24-bit analog-to-digital converter (ADC) in a DIP package, manufactured by Nuvoton Technology Corporation. It’s intended for precision measuring applications including weigh scales, industrial process control, and medical instruments.
The ADC has a supply power range of 2.7V to 5.5V and a programmable VDDA regulator with eight settings that may be adjusted between 2.4V and 4.5V. It also has a 10mA output drive capability at a voltage of 3.0V. The NAU7802KG1 is a 23-bit effective precision ADC with simultaneous 50Hz and 60Hz rejection ranging from -90dB to -100dB.
The ADC contains a programmable gain amplifier (PGA) with strengths ranging from 1 to 128, as well as a low RMS noise of 50nV in 10 SPS data output rate with PGA gain = 128 and 150nV in 80 SPS data output rate with PGA gain = 128. The NAU7802KG1 offers a 0.1V to 5V external differential reference voltage range and a customizable ADC data output rate.
The NAU7802KG1 also has on-chip calibration, an on-chip power-on reset circuit, an on-chip temperature sensor, and configurable power management choices with less than 1uA standby current. The ADC is operated by a 2-wire interface that is I2C protocol compliant and can function in temperatures ranging from -40°C to 85°C.