41. Q. Determine the maximum DNL (in LSBs) for a 3-bit DAC, which has the following characteristics. Does the DAC have 3-bit accuracy? If not, what is the resolution of the DAC having this characteristic?
55. Determine the INL for the ADC whose. V REF = 5V & with the following analog inputs: 0.3125V,0.9375V, 1.875V,2.1875V, 2.8125V, 3.125V, 4.0625V, 5.0V. Determine its INL also. Draw the quantization error, Q, in units of LSBs. ADC Specifications
73. MIXED SIGNAL LAYOUT ISSUES POWER SUPPLY & GROUNDING Danger: Injecting noise from digital system to the sensitive analog circuitry through the power supply & ground connections. How power supply & ground are supplied to both? R i1 & R i2 = small & non-negligible resistance of the interconnect to the pad. L s1 & L s2 = inductance of bonding wire which connects the pads to the pin on the lead frame. Voltage Spike : 1) Digital circuitry has high transient currents due to switching, small amount of resistance associated with interconnect can result in significant spikes. Low level analog signals sensitive to such interference, thus contaminating analog system. 2)Inductance of the bonding wire. Voltage across the inductor α change in current through it. Voltage spikes equating to hundreds of multi volts can result.