ADS7807UB

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Data Acquisition - Analog to Digital Converters (ADC) are widely used in a variety of applications such as embedded systems, audio, video and scientific instrumentation. The ADS7807UB is a high performance 13-bit, low power, low noise, high speed ADC which is suitable for a variety of applications. This article will discuss the application field of the ADS7807UB and its working principle.

The ADS7807UB has a wide application field and is suitable for a variety of applications such as medical instrumentation, automotive audio systems, industrial measurement systems and environment monitoring equipment. It is an ideal choice for single-channel ADC in high-performance embedded systems due to its low power consumption and high speed. The temperature range of the device is -40 to +85 C and it is available in a small 8-lead SOIC package.

The ADS7807UB has a wide input voltage range of 0 to 5V and can convert input voltages into 13-bit digital values with a resolution of 1mV. It can generate a full-scale output of 65,536 digital counts. The device has a programmable conversion rate from 10k samples/second to 400k samples/second, with an accuracy of 14LSB (0.3%). It also has a low power consumption of 570uA at 5V supply.

The working principle of the ADS7807UB is based on its two-step, successive-approximation ADC architecture. In the first step, the analog input is applied to a comparator. This comparator produces a binary output which is used to select a worst-to-best row of resisters. The second step is a comparison between the analog input and a digital reference. This is done by comparing the reference with the outputs of the resistors. The result of this comparison is used to select the next row of resistors, which is used to generate the digital output.

The ADS7807UB also has a low-noise, high linearity front-end amplifier which is designed for low-frequency inputs. The amplifier is designed such that it does not distort the input signal and provides a wide frequency response, from 10Hz to 30kHz. The device also features an on-chip reference generator and an adjustable post-scale amplifier which can be used to adjust the gain of the device. Additionally, the device offers a programmable start and end count, which can help to optimize the conversion time.

The ADS7807UB offers a wide application field, and its high-speed, low-power and low-noise characteristics make it an attractive choice for a variety of applications. Its two-step, successive-approximation architecture and on-chip amplifier, reference generator, and adjustable post-scale amplifier provide additional flexibility and accuracy. The device can generate a full-scale output of 65,536 digital counts and has a programmable conversion rate from 10k samples/second to 400k samples/second, making it an ideal choice for embedded systems and other applications.

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