LTC2280CUP

Series:	*
Part Status:	Obsolete

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Data Acquisition - Analog to Digital Converters (ADC)

The LTC2280CUP is a 8-bit monolithic analog to digital converter (ADC), with a wide operating supply range of 2.7V to 5.5V. It has a maximum conversion rate of 300kSPS, enabling fast data acquisition applications. The device is available in a small 3mm × 3mm QFN package, making it an ideal choice for space-constrained applications.

The LTC2280CUP has three different operating modes: single-shot, dual-edge sampling and simultaneous sampling. When in single-shot mode, the converter requires only one single clock edge to initiate a conversion and it continuously performs one consecutive conversion until its clock edge is stopped. It also has an auto-zero feature that allows it to automatically detect the DC level of an input signal and adjust the reference voltage accordingly before performing a conversion, giving it improved AC and DC accuracy.

In dual-edge sampling mode, the converter requires two consecutive edges of the clock pulse to acquire a conversion and then stop until the next trigger pulse. It provides a wide sampling rate range up to 0.05 Hz to 10MHz with adjustable oversampling ratios, enabling a wide range of data acquisition applications, such as audio recording, signal characterization and image surface analysis.

The simultaneous sampling mode allows the device to sample all inputs simultaneously with one clock pulse, reducing the sampling time significantly and improving the input signal fidelity. It can also be used to reduce the clock frequency when several channels need to be monitored. All these features make the LTC2280CUP an ideal choice for fast data acquisition applications.

The converter supports a wide supply voltage range of 2.7V to 5.5V, making it suitable for both lower voltage and higher voltage systems. It also features an extended temperature range of -40OC to +85OC, making it suitable for a variety of industrial and consumer applications. The device also has an integrated power-on reset system that ensures proper reset of the analog inputs when the power is turned on.

The LTC2280CUP features a wide dynamic range of -127dB to +127dB, which allows it to accurately convert both weak and strong signals. It also provides up to eight output codes that can be programmed to provide either an active low or an active high logic level, giving the user a wide range of programmability options. The device also provides a shutdown pin which can be used to minimize power consumption in applications where the ADC is not in use.

The LTC2280CUP integrates a low gain input stage, allowing it to accurately convert lower amplitude signals. It also integrates an anti-alias filter, which eliminates any out-of-band signals present on the signal inputs. This helps ensure that the input signals being converted by the device are of high quality.

Overall, the LTC2280CUP is a highly versatile analog to digital converter, providing users with a wide range of features that make it suitable for a variety of applications. Its wide operating supply range and extended temperature range make it suitable for a variety of systems, and its wide dynamic range enables users to accurately convert both weak and strong signals. Its integrated power-on reset system and anti-alias filter ensure that the converted data is of high quality, and its programmable output codes allow users to customize the device according to their specific requirements.

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