CS5581

8/21/07 15:56 CS5581 ±2.5 V / 5 V, 200 kSps, 16-bit, High-throughput ∆Σ ADC Features & Description ‰ Single-ended Analog Input ‰ On-chip Buffers for High Input Impedance ‰ Conversion Time = 5 µS ‰ Settles in One Conversion www.DataSheet4U.com General Description The CS5581 is a single-channel, 16-bit analog-to-digital converter capable of 200 kSps conversion rate. The input accepts a single-ended analog input signal. On-chip buffers provide high input impedance for both the AIN input and the VREF+ input. This significantly reduces the drive requirements of signal sources and reduces errors due to source impedances. The CS5581 is a delta-sigma converter capable of switching multiple input channels at a high rate with no loss in throughput. The ADC uses a low-latency digital filter architecture. The filter is designed for fast settling and settles to full accuracy in one conversion. The converter's 16-bit data output is in serial format, with the serial port acting as either a master or a slave. The converter is designed to support bipolar, ground-referenced signals when operated from ±2.5V analog supplies. The CS5581 uses self-calibration to achieve low offset and gain errors. The converter achieves a S/N of 81 dB. Linearity is 0.0007% of full scale. The converter can operate from an analog supply of 0-5V or from ±2.5V. The digital interface supports standard logic operating from 1.8, 2.5, or 3.3 V. ORDERING INFORMATION: See Ordering Information on page 31. VL ‰ Linearity ...