TLV1571IPW

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Data Acquisition - Analog to Digital Converters (ADCs) are used to convert analog signals into digital information via a series of electronic components. The TLV1571IPW is a low-voltage, low power, 8-bit successive approximation A/D converter that is specifically designed to meet the requirements of embedded applications. This application field is characterized by its capability to process signals at relatively low resolutions and speeds with minimized power within small footprints.

The TLV1571IPW operates from a single 2.7 to 5.5 V supply and features a throughput rate of 150 kHz with a single cycle conversion time of 6 μs. It offers an integrated self-calibrating voltage reference and 8-bit ADC with selectable sample and hold function. The TLV1571IPW has an on-chip comparator with a high performance digital filter for extended noise immunity and is operated via a simple 3-wire serial interface. It is available in a TSSOP-14 package, which allows for integration into small applications.

The TLV1571IPW works by first charging an internal capacitor with the input voltage via the sample and hold function. Then in the powering clock cycles, the input voltage is compared to successive approximation register (SAR)’s own reference voltages. The SAR determines which reference voltage is higher and the values in the register are adjusted accordingly in each clock cycle. Finally, the result is available and is represented by the 8-bit conversion code. This 8-bit output along with the comparator’s output can be used as a digital filter to reduce noise and improve accuracy without increasing the conversion time.

The built-in reference is calibrated internally and offers results within 1 % accuracy. The voltage reference can be either enabled or disabled, or can be operated continuously for best power and temperature performance. The TLV1571IPW includes a single offset compensation register and a single gain compensation register for increasing accuracy. Additionally, the device offers programmable power modes to reduce power consumption and save energy. The device also supports thermal shutdown with hysteresis, which prevents it from operating at excessive temperatures.

Overall, the TLV1571IPW is a cost-effective solution for embedded applications and offers reliable performance. It is well suited for multiplexed systems and it integrates several features and filters which help enhance accuracy and reduce conversion time. Moreover, its small footprint, extended temperature range, and low power consumption make it an ideal solution for many applications.

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