Interfacing to the Analog World Questions

• In a binary-weighted D/A converter the sum of all the currents from the binary weighted resistors flows through the operational amplifier.
• The main advantage of the SAR ADC method is its high speed.
• Resolution in the analog output of a DAC is primarily dependent on the number of input binary bits.
• The delay between a change on the digital input of a DAC and the appearance of the change on the output is called settling time.
• The DSO ________, ________, and ________ analog waveforms.
• The AD7524, a CMOS IC available from several IC manufacturers, is an eight-bit D/A converter that uses a(n) ________.
• A digital voltmeter converts an analog voltage to its ________ representation.
• The figure given below represents a ________.
• A(n) ________ converts an analog input to a digital output.
• For each bit that is added to a digital ramp ADC, the conversion time ________.
• A 4-bit stairstep-ramp A/D converter has a clock frequency of 100 kHz and a maximum input of 10 V, and has 6 V applied to the input. The conversion time will be ________.
• The stability of the ADC process can be improved by using a(n) ________ to hold the analog voltage constant while the A/D conversion is taking place.
• There are many applications in which analog data must be digitized and transferred into a computer's memory. The process by which the computer acquires these digitized analog data is referred to as ________.
• A simultaneous A/D converter is also known as a(n) ________ A/D converter.
• A major application for DSP is in ________ and ________ of analog signals.
• The input of an analog-to-digital converter is ________.
• The characteristic that a change of one binary step on the input of a DAC should cause exactly one step change on the output is called ________.
• On a binary-weighted D/A converter the least significant binary input ________.
• ________ ADCs use no clock signal, because there is no timing or sequencing required.
• The circuit shown below is a(n) ________.