AD7707BRZ

AD7707 is a 3-channel 16bit, Sigma-Deltas (Σ-Δ) ADC, analogue front end for low frequency measurement applications. This 3-channel device can accept either low level input signals directly from a transducer or high level (±10V) signals and produce a serial digital output. It employs 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 analogue 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.

• Charge balancing ADC: 16 bits, no missing codes, ±0.003% nonlinearity
• High level (±10V) and low level (±10mV) input channels
• True bipolar ±100mV capability on low level input
• Channels without requiring charge pumps
• Programmable gain front end : gains from 1 to 128
• 3-wire serial interface: SPI, QSPI™, MICROWIRE™ and DSP compatible, Schmitt trigger input on SCLK
• Ability to buffer the analogue input and 2.7V to 3.3V or 4.75V to 5.25V operation
• Power dissipation 1.05mW at BUF = 0; fCLK IN = 1MHz and standby current 8μA maximum
• 20 lead WSOIC package
• Operating temperature range from -40 to 85°C

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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