Data Sheet
NAU7802 24-bit ADC
Nuvoton Confidential - 5 - Revision 1.7
3 FEATURES
Supply power: 2.7V~5.5V
On-chip VDDA regulator for internal analog circuit or external load cell
Programmable VDDA: Off, 2.4V to 4.5V with eight options
Minimum 10mA output drive capability at 3.0V output voltage
Note: DVDD must be 0.3Vdc greater than desired VDDA output voltage
23 bits effective precision analog-to-digital converter
Simultaneous 50Hz and 60Hz rejection (reaching -90dB)
RMS Noise:
50nV in 10 SPS data output rate and PGA gain = 128
150nV in 80 SPS data output rate and PGA gain = 128
Programmable PGA gains from 1 to 128
Programmable ADC data output rates
External differential reference voltage range from 0.1V to 5V
System clock: External crystal oscillator or on-chip RC oscillator (4.9152Mhz)
On-chip calibration
On-chip power-on reset circuit
On-chip temperature sensor
Low Power Consumption and Programmable Power Management Options
< 1uA standby current
External 4.9152MHz Crystal oscillator
System clock:
Internal 4.9152MHz RC oscillator (power-on default system clock)
External 4.9152MHz Crystal oscillator
MCU control interface: 2-wire interface compatible with I2C protocol
Operating Temperature: -40~85C
Packages:
SOP-16 (150mil) / PDIP-16
4 APPLICATIONS
Weigh scales
Strain Gauge
Industrial process control
Liquid/gas flow control
Pressure sensors
Voltage monitors