Tuesday, November 14, 2006:
Analog Devices Inc. is setting new standards for precision data conversion performance available with the introduction of three analog-to-digital converters (ADCs). The new ADCs are designed for industrial, medical and instrumentation applications that need the speed, accuracy, low-power, integration and small size critical to system design and performance.
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Analog Devices is introducing 18-bit 1-MSPS PulSAR ADC, AD7982, has the best combination of accuracy and power consumption of any available 18-bit ADC, with an industry-best 1-MSPS (million samples per second) sample rate and only 7.5 mW of power dissipation. The new converter delivers an effective resolution of 22.7 bits with an output data rate of 1 kSPS.
The AD7982 is aimed at industrial and medical equipment such as CT scanners, which, for the first time, allow physicians to capture images of vital organs in a single scan. Older CT scanners rely on less accurate ADCs with higher power consumption, limiting the effective size, or width, of the scanner.
Second in the family, Dual 12-Bit, 5-MSPS, Simultaneous Sampling SAR ADC, AD7356 SAR (successive-approximation register) ADC, features two 5-MSPS cores and is 25 per cent faster than competing single-channel 12-bit SAR ADCs. The AD7356 is more than three times the speed of other simultaneous sampling SAR converters in its class.
The low latency and power consumption of the AD7356, combined with higher data throughput, provide a key performance advantage for optical encoders used in high-speed industrial motor controls, where constant measurement of motor functions is needed to maintain precise system operation.
Whereas, 24-bit over-sampling 125-kSPS ADC, AD7766, features a 125-kSPS sampling rate at 15 mW, providing a 20 per cent improvement in speed over competitive devices, while consuming approximately 85 per cent less power.
The AD7766 is designed for low-power equipment where small or faint signals must be distinguished in the presence of larger signals, including applications like echolocation, data acquisition and industrial vibration analysis.
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