AD7705BRUZ 16-Bit Sigma-Delta Analog to Digital Converter 1mW ADC Integrated Circuit Chip

AD7705 is complete analog front ends for low frequency measurement applications. It can accept low level input signals directly from a transducer and produce serial digital output. The devices employ a Σ-Δ conversion technique to realize up to 16 bits of no missing codes performance. The selected input signal is applied to a proprietary, programmable-gain front end based around an analog modulator. The modulator output is processed by an on-chip digital filter.

• Two Fully Differential Input Channel ADCs
• Programmable Gain Front End Gains from 1 to 128
• Three-Wire Serial Interface
• SPI®, QSPI™, MICROWIRE™ and DSP Compatible Schmitt Trigger Input on SCLK
• Ability to Buffer the Analog Input
• 2.7 V to 3.3 V or 4.75 V to 5.25 V Operation
• Power Dissipation 1 mW max @ 3 V
• Standby Current 8 µA max