AD7705BRZ-REEL7

AD7705 is a Sigma-Delta ADC acts as a complete analog front ends for low frequency measurement application. The device employ a Σ-Δ conversion technique to realize up to 16bits 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. The first notch of this digital filter can be programmed via an on-chip control register, allowing adjustment of the filter cut-off and output update rate. It is ideal for use in smart, microcontroller, or DSP-based systems. The devices feature a serial interface that can be configured for 3-wire operation. Gain settings, signal polarity, and update rate selection can be configured in software using the input serial port. The parts contains self calibration and system calibration options to eliminate gain and offset errors on the part itself or in the system.

• 2 fully differential input channel ADC
• 0.003% nonlinearity
• Programmable gain front end gains from 1 to 128
• SPI®-, QSPI™-, MICROWIRE™-, and DSP-compatible Schmitt-trigger input on SCLK
• Ability to buffer the analog input
• 2.7V to 3.3V or 4.75V to 5.25V operation
• Power dissipation is 1mW maximum at 3V
• Standby current is 8μA maximum
• Operating temperature range is −40°C to +85°C
• Package style is 16-lead SOIC-W

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party