ADS6145IRHBR

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Analog-to-digital converters (ADCs) are the devices used in data acquisition systems to convert an analog signal into digital form. ADS6145IRHBR is one such ADC. This article will focus on the application field and working principle of ADS6145IRHBR.

Using a low-power topology, the ADS6145IRHBR features a fully differential design with a low input-referred noise density and high input linearity. It is capable of  convering wide input common-mode voltage range and making very low power consumption. This makes it suitable for use in battery-powered instrumentation and medical devices, automotive  applications and communications systems.

It can sample at rates up to 25MSPS and support a variety of input formats, including serial SPI, LVDS and other commonly used low-power interfaces. Its integrated low-pass filter suppresses out-of-band interference, further enhancing its performance. With its integrated voltage reference, the ADS6145IRHBR can also help save board space by eliminating the need for an external reference.

The working principle of ADS6145IRHBR is based on successive approximation. Initially, the converter holds the output at a predetermined value, usually a digital value equal to one-half the full-scale range. Then, it samples the voltage at the input and compares it with the reference voltage. If the sampled voltage is greater than the reference voltage, the output is incremented by a predetermined amount. This process repeats until the reference voltage and the sampled voltage are equal. The output of the converter is then the digital word for the given analog input voltage.

When employed, the ADS6145IRHBR produces digital outputs in twos complement format. A subpixel averaging feature is also included to improve the dynamic range of the digital output. The final output data rate can be programmed as either sample rates or output rates.

The ADS6145IRHBR also features an integrated timing generator and contains features to help simplify the timing generation of the conversion process. It can generate the required control signals to ensure that the conversions start correctly. This eliminates the need for an external timing genator.

In summary, the ADS6145IRHBR is an ideal fit for applications requiring low power, wide input signal range, low noise and high linearity. With the features mentioned above, it can help reduce the design cycle time and board space.

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