LTC2140CUP-14#PBF

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The LTC2140CUP-14#PBF is a high speed, dual channel, 14-bit analog-to-digital converter (ADC) optimized for high resolution applications in the data acquisition space. It is designed to operate up to a sampling rate of 100MS/s and it supports simultaneous sampling of both channels or interleaved sampling at lower sampling rates. The LTC2140CUP-14#PBF has a high level of integration, including an internal voltage reference, flexible power supplies, and exceptional dynamic performance. These features make it suitable for use in applications such as medical imaging and ultrasound imaging.

The LTC2140CUP-14#PBF features a 14-bit CLKDIV pin that divides the sampling clock by an integer so the device can operate at a wide range of sample rates. It also has two input ranges that can be chosen by the user, either ±2.048V full-scale, corresponding to an input voltage range of -2.048V to +2.048V, or ±5.12V, corresponding to an input voltage range of -5.12V to +5.12V. The user-selectable 2.048V/5.12V full-scale range and the support for the simultaneous sampling of both channels allows the LTC2140CUP-14#PBF to be used in a wide variety of applications.

The LTC2140CUP-14#PBF has an on-chip, 8-bit digital-to-analog converter (DAC) that works in conjunction with the internal voltage reference to generate a ±2.0V/±4.096V/±8.192V operation across any one of its two input ranges—±2.048V/±5.12V—independently. This feature reduces the total number of components needed in the system. The DAC also provides the user with the ability to span a reference level from the maximum value of one input range to the minimum value of the other range.

The LTC2140CUP-14#PBF is also equipped with two separate reference inputs. This allows the user to select any combination of references available, including an internal voltage reference or an external reference source. The device has also been designed with a low input voltage offset, which allows measurements to be performed with a total input voltage range as low as ±0.256V. This provides an excellent ability to detect even the smallest signals.

The LTC2140CUP-14#PBF has an on-board voltage reference that can be programmed to any voltage between 1.5V and 5V. This allows the user to adjust the gain of the ADC to optimize it for specific applications. The LTC2140CUP-14#PBF also supports an auto-calibration feature which can be used to optimize the performance of the device for different range settings. The device is also equipped with an adjustable power down circuitry that can be programmed to interface seamlessly with the power-management schemes available on today’s processors.

The LTC2140CUP-14#PBF has excellent dynamic performance. It has high-speed, low-noise ADCs at 100MS/s, a SNR intrinsic of 83.4dB, a SFDR intrinsic of 86.7dBc and a dynamic range of 98.1dB. The dynamic performance and high level of integration make the LTC2140CUP-14#PBF well suited for high-resolution applications such as medical imaging and ultrasound imaging.

In summary, the LTC2140CUP-14#PBF is a high speed, dual channel, 14-bit analog-to-digital converter designed to operate up to a sampling rate of 100MS/s. It has a wide range of features including an on-chip DAC, user-selectable 2.048V/5.12V full-scale range, two separate reference inputs for a wide range of references, excellent dynamic performance, and adjustable power down circuitry. These features make the LTC2140CUP-14#PBF a versatile, high performing ADC for a variety of data acquisition applications.

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