CS5529

CS5529 16-bit, Programmable ∆Σ ADC with 6-bit Latch 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™ Compatible - 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 mW 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 kHz. Output word rates can be increased by approximately 3X by using XIN = 100 kHz. 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 S...