What is the role of ADC?
An analog-to-digital converter (ADC) is used to convert an analog signal such as voltage to a digital form so that it can be read and processed by a microcontroller. Most microcontrollers nowadays have built-in ADC converters.
What is use of SOC and EOC pin of ADC 0809?
Operation of ADC0808 Pin Diagram: After another 2.5 μs, the start of conversion (SOC) signal must be sent high and then low to start the conversion process. To indicate end of conversion ADC 0808/0809 activates EOC signal.
What is ADC in DSP?
The ADC (see Figure 1) converts an analog input signal to a digital value for use by the DSP. The ADC can sample one of up to four inputs (AIN0-AIN3) at a time, and generates a 10-bit digital representation (ADCDATA) of the samples. The maximum sampling rate of the ADC is 21.5 kHz.
What is ADC in banking?
Alternate Delivery Channels Department (ADC) is a key department that supports the bank in reaching to its potential customers, through channels and methods for providing banking services directly to the customers outside the branch by usage of ATMs, ADC has proven its ability to meet consumer’s expectations by …
What are the application of DAC?
DACs are commonly used in music players to convert digital data streams into analog audio signals. They are also used in televisions and mobile phones to convert digital video data into analog video signals. These two applications use DACs at opposite ends of the frequency/resolution trade-off.
How many output pins is available for ADC 0809?
It is a 28-pin Eight channel 8-bit ADC module. Meaning it can measure up to eight ADC value from 0V to 5V and the precision when voltage reference (Vref –pin 9) is +5V is 19.53mV (Step size). That is for every increase of 19.53mV on input side there will be an increase of 1 bit at the output side.
How is ADC connected to microcontroller?
When we power the circuit then microcontroller initialize the LCD by using appropriate command, gives clock to ADC chip, selects ADC channel by using address line and send start conversion signal to ADC. After this ADC first reads selected ADC channel input and gives its converted output to microcontroller.
What is ADC and its application?
ADC stands for analog to digital converter. It is an electronic device used for converting an analog signal into a digital signal. The analog input signal of ADC is continuous time & continuous amplitude signal.
What are the limitations of the adc0808/0809?
The ADC0808/0809 was designed for simple interface with analog inputs, especially transducers. There are a couple of limitations that follow: The source resistance must be below 10kohms for operation below 640kHz and below 5kohms for operation around 1.2MHhz. The source must remain stable while it is being sampled and should contain little noise.
What is the purpose of the adc0808/adc0809 application?
This set of student application notes is to be used to help the user interface an Analog to Digital Converter (ADC) with an FPGA. It is important to note that the ADC0808/ADC0809 ADC used was a Texas Instruments chip although the notes should work just as well with a National Semiconductor device.
What is acd0809 data acquisition?
The ADC0808, ADC0809 data acquisition component is a monolithic CMOS device with an 8-bit analog-to-digital con- verter, 8-channel multiplexer and microprocessor compatible control logic. The 8-bit A/D converter uses successive ap- proximation as the conversion technique. 4.What is the acd0809 approximation technique?
How to implement ADC in VHDL?
This is how the ADC is implemented in the VHDL code provided. The purpose of the start signal is two fold. On the rising edge of the pulse the internal registers are cleared and on the falling edge of the pulse the conversion is initiated. Like the ALE pulse the minimum pulse width is 100ns.