High-throughput ADC
7/31/07
CS5560
±2.5 V / 5 V, 50 kSps, 24-bit, High-throughput ∆Σ ADC
Features & Description
Differential Analog Input...
Description
7/31/07
CS5560
±2.5 V / 5 V, 50 kSps, 24-bit, High-throughput ∆Σ ADC
Features & Description
Differential Analog Input On-chip Buffers for High Input Impedance Conversion Time = 20 µS Settles in One Conversion
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General Description
The CS5560 is a single-channel, 24-bit analog-to-digital converter capable of 50 kSps conversion rate. The input accepts a fully differential analog input signal. On-chip buffers provide high input impedance for both the AIN inputs and the VREF+ input. This significantly reduces the drive requirements of signal sources and reduces errors due to source impedances. The CS5560 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 24-bit data output is in serial form, 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 CS5560 uses self-calibration to achieve low offset and gain errors. The converter achieves a S/N of 110 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 32.
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