Description
04856-001 Data Sheet 3-Channel, Low Noise, Low Power, 16-/24-Bit, Σ-Δ ADC with On-Chip In-Amp AD7798/AD7799 .
The AD7798/AD7799 are low power, low noise, complete analog front ends for high precision measurement applications.
Features
* RMS noise: 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 Update rate: 4.17 Hz to 470 Hz 3 differential inputs Internal clock oscillator Simulta
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
FUNCTIONAL BLOCK DIAGRAM
GND AVDD
REFIN(+) REFIN(
* )
AD7798/AD7799
REFERENCE