Explanation: Log amps are used to compress the dynamic range of a signal. The fundamental log amp circuit consists of a grounded base transistor in the feedback path. 3. Find the output voltage of the log-amplifier
A. VO = -(kT)×ln(Vi/Vref)
B. VO = -(kT/q)×ln(Vi/Vref)
C. VO = -(kT/q)×ln(Vref/Vi)
D. VO = (kT/q)×ln(Vi/Vref)
Answer:A
Explanation: Log amps are used to compress the dynamic range of a signal. The fundamental log amp circuit consists of a grounded base transistor in the feedback path. 3. Find the output voltage of the log-amplifier
A. VO = -(kT)×ln(Vi/Vref) B. VO = -(kT/q)×ln(Vi/Vref) C. VO = -(kT/q)×ln(Vref/Vi) D. VO = (kT/q)×ln(Vi/Vref)
Explanation: the output voltage is proportional to the logarithm of input voltage.