AD7765BRUZ

AD7765BRUZ is a high-performance, 24-bit sigma-delta (Σ-Δ) analogue-to-digital converter (ADC) with on-chip buffers and a serial interface. It combines wide input bandwidth, high speed, and performance of 112dB dynamic range at a 156KHz output data rate. With excellent DC specifications, the converter is ideal for high-speed data acquisition of AC signals where DC data is also required. Using the AD7765 eases front-end antialias filtering requirements, simplifying the design process significantly. The AD7765 offers pin-selectable decimation rates of 128× and 256×. Other features include an integrated buffer to drive the reference, as well as a fully differential amplifier to buffer and level shift the input to the modulator. An over-range alert pin indicates when an input signal exceeds the acceptable range. It is used in applications such as data acquisition systems, vibration analysis, and instrumentation.

• Low power mode, flexible serial peripheral interface (SPI)
• Fully differential modulator input, on-chip differential amplifier for signal buffering
• On-chip reference buffer, full band low-pass finite impulse response (FIR) filter
• Overrange alert pin, digital gain correction registers, power-down mode
• Synchronization of multiple devices via the(active-low) SYNC pin, daisy chaining
• Dynamic range is 115dB typ at (TA = +25°C), 156KHz maximum fully filtered output word rate
• Integral nonlinearity is 0.0036% typical at (normal power mode, TA = +25°C)
• Gain error is 0.018% typ at (TA = +25°C), zero error is 0.006% typ at (normal power mode)
• Total Harmonic Distortion (THD) is -105dB typical at (input amplitude = -0.5dB, TA = +25°C)
• Operating temperature range from -40°C to +85°C, 28-lead TSSOP package

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