Draw the circuit for an 4-bit R-2R ladder DAC
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(c) What is the maximum value IV, can assum *5.84 A four-bit R-2R ladder DAC is presented in Fig. 5.103. (a) Show that the output voltage is given by LV-PV V2 V3 V4) -V, = R (2R + R + 8R+ 16R) (b) If R;= 12 kN and R = 10 k22, find IVI for [V,V2V3V4] = [1011] and [V V V3V4] = [0101). RE 2R VOLW 22 3 v20mw 22 V, — & — 2R V40W }2R Figure 5.103
Problem 6 (15 points): The general structure of an N -bit R-2R ladder digital to analog converter (DAC) is shown below, where the voltages at each of the input pins are either 0 or 4 V (for binary "O" and "1", respectively). Assume N- 5. A stream of 5-bit unsigned integers, x[n], are applied to the input of this ladder in binary format (for example, if x13-12, which is B01100 in binary, then a2 and a3 are 4V while ao,...
What is the output of a 4-bit R-2R DAC if the input digital code is 1101? Vref =-8 V. MSBasi 2R Digital input is t101. Y = 1/3 UREF Raik 2R=2K and A) 4V B) 6.33 C) 2.25V D) 4.33V E) 4.5V
When the feedback resistor in a 4-bit weighted-resistor DAC is R, the reference voltage of 1.0V, and the output range of 4.0V, what are the largest and smallest input resistor values?
Data Converters and Timing Circuits (20 marks) (a) For the timing circuit shown below, use a 1000pF capacitor and find the values of RA and RB that result in an oscillation frequency of 100KHz and a duty cycle of 75% Reset 0.693 R,+2R,)C Discharge Outpat Threshold Trigger Ground Duty-Cle2R R,+2R, ar (b) The 4-Bit Weighted-Resistor DAC Converter shown below is to be expanded into an 8-bit device a. What are the required values of the additional resistors to be added?...
Figure 2 shows an 8-bit voltage-mode DAC implemented with an LM385 2.5V Zener diode and a 741 op amp. R1 = 10 kQ. R2 = 30 kΩ and R = 10 k(2. Switches SW1. SW2. SW8 are controlled by bl, b2,... b8, respectively a. Find VFSR, VFSv, resolution of the DAC b. Find the corresponding output voltages for the digital inputs of 1000000 and 11000000 (Show your work) R2 2R 2 6.2 Sw zm3釘 又5
Using CMOS logic draw a circuit that multiplies two 4 bit numbers into an 8 bit number (the product).
Justify your answer R = 2R R = 2R & R = R 2 The circuit above contains a battery with negligible internal resistance, a closed switch S, and three resistors, each with a resistance of R or 2R. a. i. Rank the currents in the three resistors from greatest to least, with number 1 being greatest. If two resistors have the same current, give them the same ranking. 1 A 3 B 2 Ic ii. Justify your answers. b....
You need to design for-bit R-2R network digital to analog converter using S k? and io with reference voltage 16 volt. i) Sketch a circuit of this digital to analog converter. i) Calculate the output voltage for an input of 1010, 1101 and 0110 Calculate output voltage resolution
2. Give a DAC0800, and LM741, design a DAC test circuit. The input of the circuit is eight bit number between 00H and FFH, and the output is analog voltage ranging from -10v to 10v. Make a table showing analog voltages for digital numbers: 00H, 08H, 80H, 88H, and FFH Thanks so much in advance!