The AD7766 is high performance 24-bit over-sampled analog to digital converter combining wide dynamic range and input bandwidth with an on chip FIR filter while consuming only 20mW max power in a 16 pin TSSOP package. Specifically designed for ultra low power data acquisition, providing 24-bit resolution and high SNR makes the device ideal for measuring small signal changes over a wide dynamic range. This is particularly important in many data acquisition applications where small changes are measured on larger AC or DC signals. In addition the AD7766 provides excellent DC accuracy and drift specifications making the device suitable where DC data also needs to be acquired. The AD7766 improves SNR performance and simplifies anti aliasing requirements through over-sampling which is important in minimizing input signal distortion to the inputs of the ADC. A high performance on-chip FIR filter subsequently filters the over-sampled data and removes out of band noise. A SYNC/PD (Synchronisation/Power down) pin is an added feature, allowing for easy synchronization of multiple devices. The device operates from -40oC to 105oC. By combining wide dynamic range and high SNR at output data rates up to 125ksps with ultra low power the AD7766 provides a compact solution for low power data acquisition such as PCI or USB based systems.