AD7711AARZ

AD7711 is a complete analogue front end for low frequency measurement applications. The device accepts low level signals directly from a transducer and outputs a serial digital word. It employs a ∑-∆ conversion technique to realize up to 24bit of no missing codes performance. The 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 the on-chip control register, allowing adjustment of the filter cut-off and settling time. Typical applications include RTD transducers process control, smart transmitters and portable industrial instruments.

• Charge-balancing ADC (24bits, no missing codes and ±0.0015% nonlinearity)
• 2-Ch programmable gain front end(gains from 1 to 128, 1 differential input and 1 single-ended input)
• Low-pass filter with programmable filter cut-offs
• Ability to read/write calibration coefficients
• RTD excitation current sources
• Bidirectional microcontroller serial interface
• Internal/external reference option
• Single- or dual-supply operation
• 24 lead WSOIC package
• Operating temperature range from -40°C to +85°C

附註

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