Register
An input signal with a certain characteristic is digitized using an N-bit ADC with a fixed input range. The SQNR is 32 dB when N is 7. What should the minimum value of N be if you want an SQNR of at least
126k views
4 votes
An input signal with a certain characteristic is digitized using an N-bit ADC with a fixed input range. The SQNR is 32 dB when N is 7. What should the minimum value of N be if you want an SQNR of at least 46 dB

User Charlie Drewitt
by
6.7k points

1 Answer

1 vote

Answer:

10

Step-by-step explanation:

From the information given:

The input for a fixed voltage range for SQNR when N = 7 is 32 dB

Required: To find the minimum value of N such that SQNR ≥ 46 dB

For an ADC:

SQNR = 6.02(N) + 1.76 dB

Comparing both SQNR such that SQNR₁ = 32 dB and SQNR₂ = 46 dB

Taking the ratio:


(32 - 1.76)/(46-1.76)= (7)/(N_(minimum))


(30.24)/(44.24)= (7)/(N_(minimum))


N_(minimum) * 30.24 = 44.24 * 7


N_(minimum) = (44.24 * 7)/(30.24)


N_(minimum) = 10.24


N_(minimum) \simeq 10

User Stalet
by
7.2k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

7.6m questions

10.2m answers

Other Questions

A piston-cylinder device fitted with stops in the cylinder walls contains 2.1 kg of water initially at 150 kPa and 30 °C. Heat is transferred to the system until the final temperature reaches 250 °C. The
A water towers lowest point is 405 ft and the main line is 6 feet below the ground. The ground elevation is at 276 ft. The main line travels 2.9 miles. The pipe will travel through the following flanged
An activated sludge plant is being designed to handle a feed rate of 0.438 m3 /sec. The influent BOD concentration is 150 mg/L and the cell concentration (MLVSS) is 2,200 mg/L. If you wish to operate the
The bulk modulus of a fluid if it undergoes a 1% change in volume when subjected to a pressure change of 10,000 psi is (a) 0.01 psi (b) 0.001 psi (c) 0.00001 psi (d) 0.000001 psi (e) none of these
A car has an initial speed of 10 m/s. It then undergoes a constant acceleration of 0.05 m/s^2 over a distance of 5 km. Determine: a) The car final speed. b) The time needed to travel the 5 km.
Link Copied!