ATD Converter and Measurement Devices

The SC signal triggers the conversion process.

EOC indicates that the digital output is ready.

The reference voltages used are VH (high) and VL (low).

<p>VOUT represents the output voltage after conversion.</p> Signup and view all the answers

<p>The internal latch holds the digital output until it is needed.</p> Signup and view all the answers

<p>The DTA output is indicated with 8 bits.</p> Signup and view all the answers

<p>The analog input is converted into a digital output.</p> Signup and view all the answers

<p>The clock coordinates the timing of the conversion process.</p> Signup and view all the answers

<p>Converting analog signals to digital form allows for sophisticated numerical algorithms to be applied, which is essential for storage, processing, and communication.</p> Signup and view all the answers

<p>A thermometer measures temperature to determine whether an entity, like a person, has a fever.</p> Signup and view all the answers

<p>An altimeter measures atmospheric pressure to determine altitude above sea level.</p> Signup and view all the answers

<p>A blood pressure monitor measures the pressure in blood vessels to assess cardiovascular health.</p> Signup and view all the answers

<p>Digital cameras allow for immediate photo viewing and easy storage of images.</p> Signup and view all the answers

<p>Continuous-time signals are defined for all real values of time, while discrete-time signals are defined only at specific intervals.</p> Signup and view all the answers

<p>A car engine controller regulates engine performance and efficiency through various sensors and actuators.</p> Signup and view all the answers

<p>A scuba dive computer monitors depth and time to ensure safe diving practices.</p> Signup and view all the answers

<p>To convert the sensor output to a compatible voltage for the ATD input.</p> Signup and view all the answers

<p>The translation formula is $V_{OUT} = V_L + \frac{V_H - V_L}{V_2 - V_1} \times (V_{IN} - V_1)$</p> Signup and view all the answers

<p>The gain $A$ is calculated as $A = \frac{V_H - V_L}{V_2 - V_1}$.</p> Signup and view all the answers

<p>Bias adjusts the output level of the signal, calculated as $B = A V_1 - V_L$.</p> Signup and view all the answers

<p>Single-ended inputs are referenced to ground, while differential inputs measure the voltage difference between two signals.</p> Signup and view all the answers

<p>It maintains a constant input signal during the conversion process.</p> Signup and view all the answers

<p>Clamping diodes protect against out-of-range inputs and prevent damage to the circuitry.</p> Signup and view all the answers

<p>Multiplexing allows sharing a single ADC among multiple inputs, selecting one at a time for sampling.</p> Signup and view all the answers

<p>The Write pulse stores the new binary input value to the DTA latch, holding its output constant until the next Write pulse.</p> Signup and view all the answers

<p>The analog input voltage $V_{IN}$ is calculated as $V_{IN} = V_{L} + \frac{V_{H} - V_{L}}{2^n - 1} \times D$.</p> Signup and view all the answers

<p>The output voltage $V_{IN} = 0.5 + \frac{3.5 - 0.5}{2^{12} - 1} \times 100 = 0.573V$.</p> Signup and view all the answers

<p>The maximum input voltage from the sensor may not utilize the full range of the A/D converter, leading to unacceptable measurement precision.</p> Signup and view all the answers

<p>A signal conditioning circuit translates the sensor's output to fit the A/D converter's input range.</p> Signup and view all the answers

<p>The thermocouple outputs a low voltage (10-100 mV) which is much smaller than the A/D converter's input range (0-10 V).</p> Signup and view all the answers

<p>Only the least significant bits may change, resulting in reduced measurement accuracy.</p> Signup and view all the answers

<p>In a binary system, the digital value $D$ directly influences the computed analog voltage $V_{IN}$ based on the range and resolution of the converter.</p> Signup and view all the answers

<p>The EOC flag indicates that the conversion is complete and the digital value is ready in the ADC_DR register.</p> Signup and view all the answers

<p>In single conversion mode, the ADC performs one conversion per trigger, while in continuous conversion mode, the ADC continuously starts a new conversion after completing the previous one.</p> Signup and view all the answers

<p>Initialization steps include powering on the ADC, selecting and configuring the GPIO pin for analog input, and setting the conversion mode to single conversion.</p> Signup and view all the answers

<p>The DMA controller allows for automatic data transfer from the ADC output to memory, reducing CPU overhead and improving efficiency.</p> Signup and view all the answers

<p>Selecting the input channel determines which analog signal is converted to a digital value, allowing the ADC to interface with specific inputs.</p> Signup and view all the answers

<p>The ADC can be triggered by hardware through a nonzero value set in the EXTEN[1:0] bits of the ADC_CR2 register, which selects the triggering event.</p> Signup and view all the answers

<p>Programmable sampling time allows each channel to be sampled for a user-defined number of ADCCLK cycles, optimizing conversion accuracy and speed.</p> Signup and view all the answers

<p>To configure the ADC for scan mode, the SCAN bit in the ADC_CR1 must be set to 1 to enable scanning across multiple channels.</p> Signup and view all the answers

<p>To sample the analog signal value and hold it for further processing.</p> Signup and view all the answers

<p>The available number of analog input pins and the resolution of the ADC.</p> Signup and view all the answers

<p>The resolution can be configured to 12-bit, 10-bit, 8-bit, or 6-bit.</p> Signup and view all the answers

<p>VREF+ and VREF- define the voltage range for the ADC input signals, with VREF+ being the upper limit and VREF- typically the ground reference.</p> Signup and view all the answers

<p>The STM32F401RE ADC supports up to 16 external analog input channels.</p> Signup and view all the answers

<p>Triggers can originate from software commands or hardware signals from timers and external lines.</p> Signup and view all the answers

<p>All peripherals are disabled, alternate functions are inactive, and IO ports are set to input floating mode.</p> Signup and view all the answers

<p>The digital result is stored as a 16-bit data register, which can be left or right-aligned.</p> Signup and view all the answers