AD7715ARZ-3

AD7715ARZ-3 is a 3V/5V, 450µA, 16-bit, sigma-delta ADC. It is a complete analogue front end for low frequency measurement applications. The part can accept low level input signals directly from a transducer and outputs a serial digital word. It employs a Σ-Δ conversion technique to realize upto 16-bits 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 output update rate. It is ideal for use in smart, microcontroller, or DSP based systems. It features a serial interface that can be configured for three-wire operation. Gain settings, signal polarity, and update rate selection can be configured in software using the input serial port.

• Integral nonlinearity is ±0.0015% of FSR typical at (AVDD = 3V, DVDD = 3V)
• Unipolar offset drift is 0.2μV/°C typical at (AVDD = 3V, DVDD = 3V)
• Differential input capability, three-wire serial interface
• SPI-, QSPI™-, MICROWIRE™-, and DSP-compatible, ability to buffer the analogue input
• Low-pass filter with programmable output update
• Low supply current is 450µA maximum at 3V supplies
• Gain drift is 0.2ppm of FSR/°C typical at (AVDD = 3V, DVDD = 3V)
• Input common-mode rejection (CMR) is 90dB typical at (AVDD = 3V, DVDD = 3V)
• Operating temperature range from -40°C to +85°C, 3V AVDD supply
• 16-lead standard small outline package [SOIC-W]

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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