CS5529 Datasheet | Cirrus Logic

Features General Description z Delta-sigma Analog-to-digital Converter - Linearity Error: 0.0015%FS - Noise-free Resolution: 16-Bits z 2.5 V Bipolar/Unipolar Buffered Input Range z 6-bit Output Latch z Eight Digital Filters - Selectable Output Word Rates - Output Settles in One Conversion Cycle - 50/60 Hz ±3 Hz Simultaneous Rejection z Simple Three-wire Serial Interface - SPI™ and Microwire™ patible - Schmitt Trigger on Serial Clock (SCLK) z System/Self-calibration with R/W Registers z Power Supply Configurations - VA+ = +5 V; VA- = 0 V; VD+ = +3 V to +5 V - VA+ = +2.5 V; VA- = -2.5 V; VD+ = +3 V to +5 V - VA+ = +3.0 V; VA- = -3.0 V; VD+ = +3.0 V z Low Power Consumption: 2.6 m W The 16-bit CS5529 is a low-power, programmable ∆Σ ADC (Analog-to-Digital Converter), which includes coarse/fine charge buffers, a fourth-order ∆Σ modulator, a calibration microcontroller, a digital filter with programmable decimation rates, a 6-bit output latch, and a threewire serial interface. The ADC is designed to operate from single or dual analog supplies and a single digital supply. The digital filter is programmable with output update rates between 1.88 Hz to 101 Sps. These output rates are specified for XIN = 32.768 k Hz. Output word rates can be increased by approximately 3X by using XIN = 100 k Hz. The filter is designed to settle to full accuracy for the selected output word rate in one conversion. When operated at word rates of 15 Sps or less, the filter rejects both 50 Hz and 60 Hz simultaneously. Low power, single conversion settling time, programmable output rates, and the ability to handle negative input signals make this single- or dual-supply product an ideal solution for isolated and non-isolated applications. ORDERING INFORMATION See page 29. AIN+ AIN- VREF+ VREF- VA+ VA1X 1X Differential 4th Order Delta-Sigma Modulator Latch A0 A1 D0 D1 D2 D3 Calibration Memory DGND VD+ Digital Filter Calibration Register Calibration µC Clock Gen. Control Register Output...